| 1. |
Hiroki Shimanoe, Takashi Mashio, Taisei Tomaru, Seung-Jae Ha, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon, Understanding mesophase pitch from a lyotropic liquid crystalline perspective, Carbon Reports, 2-1, 2–22 (2023), https://doi.org/10.7209/carbon.020105, 2, 1, 2-22, 2023.03, This review explores recent research regarding mesophase pitch (MP). Spinnable mesophase pitch (SMP) was used as a model pitch for MP in all experiments. We explain some phenomenological results of the lyotropic liquid crystalline properties of the SMP, which show that the MP behaves as a typical lyotropic liquid crystal. The mesogenic and solvent components of SMP are defined. We define the threshold concentration (TC) as the minimum amount of mesogenic component necessary for SMP to achieve 100 vol% anisotropy. We also report the TCs of various SMPs and discuss the effects of the solvent
component. Concerning the identity of the mesogenic component, we discuss quantitative correlations between the size of the layered molecular stacking units and the anisotropic content of the SMP. Research has shown that a layered molecular stacking unit larger than a specific size corresponds to the mesogenic component of the MP. We discuss a novel method for the manufacture of SMPs using our understanding of MP as a lyotropic liquid crystal, which comprises thermal mixing of optimal amounts of the mesogenic and solvent components that were prepared separately under different conditions. This method enables the properties of each component to be optimized without involving a costly hydrogenation process. Finally, we discuss how this approach can be used to increase SMP yield by modifying the contents of the anisotropic mesogenic and
solvent components.. |
| 2. |
Hiroki Shimanoe, Takashi Mashio, Taisei Tomaru, Seung-Jae Ha, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon, Evaluation of the utility of isotropic pitches as solvent components of spinnable mesophase pitch precursors for highly graphitizable functional carbon materials, Journal of Industrial and Engineering Chemistry, 120, 25 325-331 (2023), https://doi.org/10.1016/j.jiec.2022.12.039, 120, 25, 325-331, 2023.02. |
| 3. |
Hiroki Shimanoe, Takashi Mashio, Taisei Tomaru, Seung-Jae Ha, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon, Analysis of spinnable mesophase pitch in terms of lyotropic liquid crystalline solution, Carbon Letters, 33, 713–726 (2023), https://doi.org/10.1007/s42823-022-00453-4. , 33, 713-726, 2023.02. |
| 4. |
Da HE, Ryo SAKAI, Hyeonseok YI, Koji SAITO, Toru KATO, Chika KOSUGI, Koji NAKABAYASHI, Seong-Ho YOON, Jin MIYAWAKI, Component analysis by solid-state NMR for effective utilization of marine biomass, Keiko IDETA
, Proceedings of Conference on Coal Science, 59 (2022).
, https://doi.org/10.20550/jiesekitanronbun.59.0_74, 59, 2022.12. |
| 5. |
Da HE, Ryo SAKAI, Keiko IDETA, Hyeonseok YI, Koji SAITO, Toru KATO, Chika KOSUGI, Koji NAKABAYASHI, Seong-Ho YOON, Jin MIYAWAKI, A Study of Pyrolysis Characteristics and Removal Method of Hetero-elements for Production of Marine Biomass-based Carbon Materials, Proceedings of Conference on Coal Science, 59 (2022). , https://doi.org/10.20550/jiesekitanronbun.59.0_76, 59, 2022.12. |
| 6. |
Dong‑Yeon Ryu, Doo‑Won Kim, Yu‑Jin Kang, Youngjin Lee, Koji Nakabayashi1, Jin Miyawaki, Joo‑Il Park, Preparation of environmental‑friendly N‑rich chitin‑derived activated carbon for the removal of formaldehyde, Carbon Letters, 10.1007/s42823-022-00379-x, 32, 6, 1473-1479, 32, Issue 6, Pages 1473 - 1479October 2022, 2022.12, A conventional porous carbon is still a very promising material for the removal of gaseous pollutants because of its abundant surface functional groups and a high specific surface area. Here, we prepared an environment-friendly uniform N-rich narrow micropore activated carbon, for the removal of formaldehyde, based on steam activation and N-rich with chitin as the starting material. A sample carbonized at 500 °C and steam activated at 800 °C (CAC800) showed a reasonable yield (55%) with uniform and narrow micropores without mesopores but having a balanced nitrogen functionality. CAC800 possesses outstanding formaldehyde removal capabilities under both dry and wet (humidity 45%) conditions. In addition, when compared with commercial activated carbon materials, we clearly demonstrated that the existence of high nitrogen content with uniform and narrow micropores simultaneously removed formaldehyde, effectively.. |
| 7. |
Lee, Song Mia;Lee, Seon Ho;Park, Seungjooa;Yoon, Seong-Ho;Jung, Doo-Hwan, Preparation of mesoporous activated carbon by preliminary oxidation of petroleum coke with hydrogen peroxide and its application in capacitive deionization, Desalination
, 10.1016/j.desal.2022.115901, 5391, Article number 115901, Volume 5391 October 2022 Article number 115901, 2022.10, Capacitive desalination is a very promising method for the supply of high-tech industrial water in the future. In this study, activated carbon with both specific surface area and mesopores developed at the same time was prepared by preliminarily oxidized petroleum coke with hydrogen peroxide and then activating it with KOH. Hydrogen peroxide used for preliminary oxidation penetrates deep to the inside as well as the surface of petroleum coke to increase reactivity upon activation, forming pores to the depth of petroleum coke to create high specific surface area activated carbon with developed mesopores. Activated carbon prepared by preliminarily oxidized petroleum coke had high specific surface area and mesopores. In particular, OMC-35 had a specific surface area of 3032 m2/g and the highest mesopores of 0.82 cm3/g. As a result, OMC-35 had an excellent capacitance of 196.9 F/g at a scan rate of 5 mV/s. In addition, OMC-35 showed a salt adsorption capacity (SAC) of 19.5 mg/g and excellent desalination performance with a salt removal efficiency of 98.5 % in 250 ppm of NaCl solution.. |
| 8. |
Hiroki Shimanoe, Takashi Mashio, Hideki Nakashima, Seunghyun Ko, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawakia, Seong-Ho Yoon, Correlation between molecular stacking and anisotropic texture in spinnable mesophase pitch, Carbon, 192, 15, 395-404, 10.1016/j.carbon.2022.02.062., 2022.06, The correlation of the anisotropic texture and (002) the molecular stacking property of spinnable mesophase pitch (SMP) was closely examined. SMP was found to be a specific solution consisting of mesogenic and solvent components, and the mesogenic component was composed of a cluster unit of (002) stacked molecular sheets. The anisotropic texture of SMP was strongly correlated with the height of (002) molecular stacking. When the concentration ratio of the mesogenic component to the solvent component was higher than the threshold concentration, the SMP always had 100 vol% anisotropic texture and a similar or larger number of stacked (002) sheets compared with its mesogenic component in both the solid and molten states. The solvent component, in both lamellar and hexagonal phases, assisted orientation of mesogenic molecules and rearrangement of mesogenic cluster units, thereby inducing a higher degree of graphitization than that of the solvent-free mesophase pitch. A schematic phase model of SMP was proposed based on a lyotropic liquid crystalline system and a hierarchical domain model.. |
| 9. |
Kaiser Ahmed Rocky, Md. Amirul Islam, Animesh Pal, Bidyut Baran Saha, Hyun-Sig Kil, Seong-Ho Yoon & Jin Miyawaki , Specific Heat Capacity of Carbon-Based Composites for Adsorption Heat Pump and Desalination Applications, Springer Water
pp. 87-111, 10.1007/978-3-030-93845-1_4, 2022.06. |
| 10. |
Hoi-Kyoeng Jung, Adel Al-Mutairi, Ik-Phyo Hong, Jung-Chul An, Min-Seok Jeon, Cho-I Park, Doo-Won Kim, Abdulazeem Marafie, Xiaoliang Ma, Taegon Kim, Seong-Ho Yoon, Joo-Il Park, Characteristics on catalytic removal of sulfur and nitrogen from atmospheric residues at the molecular level, Catalysis Today
Volumes 388–389, 1 April 2022, Pages 259-268, 10.1016/j.cattod.2020.06.040, 38-389, 1, 259-268, 2022.04, The detailed investigation of heavy oil catalytic upgrading is important because heteroatom-containing compounds are detrimental to refining processes and the environment. Atmospheric residues (ARs) with different compositions were hydrotreated in two plug-flow reactors in series to study the reactivity of various species over the commercial catalysts at the molecular level. A 15-T Fourier-transform ion cyclotron resonance (FT-ICR) mass spectrometer equipped with atmospheric pressure photoionization (APPI) was applied to determine the molecular composition without chemical derivatization. Here, we examined the changes in bulk and molecular composition of two different ARs. The catalytic reactivity of the ARs was determined with respect to the relative abundance of the double bond equivalent (DBE) distribution dependent on carbon number for each class, such as hydrocarbon, sulfur, and nitrogen species. Reactivities and reaction routes of hydrocarbon, sulfur, and nitrogen species were discussed in detail at the molecular level.. |
| 11. |
Yi H., Nakabayashi K., Yoon S.-H., Miyawaki J. , Study on the applicability of pressurized physically activated carbon as an adsorbent in adsorption heat pumps, RSC Advances, 12, 5, 2558 - 2563, 10.1039/d1ra08395c., 2022.01. |
| 12. |
Islam M.A., Pal A., Baran Saha B., Yoon S.-H., Miyawaki J., Thermophysical Characteristics of Novel Biomass-Derived Activated Carbon as a Function of Synthesis Parameters, Heat Transfer Engineering, 10.1080/01457632.2021.2001743, 1-14, 2021.11. |
| 13. |
Lee S.H.,Lee S.M. Park S., Yoon S.-H., Han H., Jung D.-H., Preparation of isotropic carbon fibers from kerosene-purified coal tar pitch by co-carbonization with pyrolysis fuel oil, Materials
Volume 14, Issue 21 November-1 2021 Article number 6280, 10.3390/ma14216280, 14, 21, November-1 2021 Article number 6280, 2021.11, An inexpensive and general-purpose carbon fiber was prepared using coal tar pitch. In contrast to the solvent extraction process employing expensive solvents, a low-cost centrifugal separation method facilitated the reduction of loss due to the pitch purification and an overall yield increase. The coal tar pitch purified by centrifugation and subsequently co-carbonized with pyrolysis fuel oil improved in spinnability. Moreover, the resulting spinnable pitch had a softening point of 250◦C. The obtained carbon fibers were heat-treated at 1000◦C for 5 min, resulting in a tensile strength of approximately 1000 MPa and an average diameter of 9 µm. In this study, we present an effective method for obtaining low-cost general-purpose isotropic carbon fibers. . |
| 14. |
Ideta K., Kim D.-W., Kim T., Nakabayashi K., Miyawaki J., Park J.-I., Yoon S.-H., Effect of pore size in activated carbon on the response characteristic of electric double layer capacitor, Journal of Industrial and Engineering Chemistry
Volume 102, Pages 321 - 326 25 October 2021, 10.1016/j.jiec.2021.07.014, 102, 321-326, 2021.10, The effect of pore size on the response characteristic of an electric double layer capacitor (EDLC) was closely examined. A series of phenol-resin-based activated carbon (AC) samples was prepared as average pore size from 0.94 to 1.68 nm by KOH activation by varying the activation temperature and KOH/carbonized phenol-resin ratio. The impedance properties of pouch-type EDLC cells prepared using AC samples were evaluated by applying an alternating current at 3 V between 10 mHz and 100 kHz for confirming the response characteristic. The cell based on the AC with a largest pore size (1.68 nm) showed fast response frequency, and had a high dielectric relaxation time constant as calculated from the response frequency value. The AC with the largest pore size, which consisted of both micropores (>1 nm) and mesopores (2–4 nm), was confirmed to facilitate extremely low electrolyte-diffusion resistance during the formation of the electric double layer, implying that the large pores lead to fast and stable response frequency. The presented findings suggest that AC with a largest pore size as the electrode leads to superior capacitance and response frequency characteristics in the alternating current than those of an AC with a smaller pore size. . |
| 15. |
Kim T., Kim D.-W., Ideta K., Park C.-I., Miyawaki J., Park J.-I., Yoon S.-H., Pressurized physical activation: A simple production method for activated carbon with a highly developed pore structure, Carbon
Volume 183, Pages 735 - 742 15 October 2021, 10.1016/j.carbon.2021.07.061, 183, 735-742, 2021.09, Activated carbon (AC) is produced by a physical or chemical activation process. Physical activation methods are commonly adopted in industry because of their low production costs, but the insufficiency of activating agent diffusibility into core parts of the particles and microdomains of carbon materials causes a lower activation yield and degree of pore development, compared with chemical activation methods. To increase the activating agent diffusibility and corresponding degree of pore development, we propose a novel pressurized physical activation method. Pressurization afforded remarkable increases in specific surface area and total pore volume of the prepared AC, compared with atmospheric pressure. Additionally, in AC prepared by this method, pore size distribution analysis revealed characteristic development of micropores of about 1.6 nm; such micropores did not appear in AC under conventional atmospheric physical activation. Furthermore, observations of particles and their microdomains showed that pressurization increased the activating agent diffusibility in carbon particles, but not at the microdomain level. This innovative pressurized physical activation can produce AC with highly developed pores (specific surface area >2600 m2/g) and a unique pore size distribution due to the improved activating agent diffusibility in carbon particles.. |
| 16. |
Kim T., Kim D.-W., Ideta K., Park C.-I., Miyawaki J., Park J.-I., Yoon S.-H., Structural pore elucidation of super-activated carbon based on the micro-domain structure model, Journal of Industrial and Engineering Chemistry
Volume 101, Pages 186 - 194 25 September 2021, 10.1016/j.jiec.2021.06.013, 101, 186-194, 2021.09, For elucidation of the pore structure of super-activated carbon (SAC) based on the micro-domain structure model, a new experiment of inverse approach was designed by ball-mill treatment. The two representative SACs with an ultra-high specific surface area (∼3000 m2 g−1) used Maxsorb-III as a non-graphitizable carbon and M-30 as a graphitizable carbon, which are derived from petroleum coke and meso-phase carbon microbeads (MCMB), respectively. SACs consisting of micro-domains, are destroyed during ball milling due to the weak-interactions between the micro-domains. The formation mechanisms of their intra-particular pores (internal slit-like micropores in micro-domain) and inter-particular pores (channeled mesopores between microdomains) are successfully explained by the N2 adsorption/desorption isotherms, FE-SEM, HR-TEM, STEM, and electrochemical techniques. In addition, their capacitance behaviors using different electrolytes as a probe are clearly matched with the change of micro- and mesopores through the ball-mill treatment. This novel micro-domain structure model for porous carbon materials successfully accounts for critical limitations of the conventional hierarchical pore structure model.. |
| 17. |
Park C.-I., Oh K., Ma X., Cho E., Park Y.-D., Hong I., An J.-C., Kang Y.-J., Jo H.-K., Jang M.-H., Yoon S.-H., Jeon Y.
, Molecular Behaviors on Asphaltenes during Atmospheric Residue Hydrodesulfurization, Energy and Fuels
Volume 35, Issue 17, Pages 13644 - 136532 September 2021, 10.1021/acs.energyfuels.1c01201, 35, 17, 13644-136532, 2021.09, A two-stage hydrotreatment of the two atmospheric residues (LF-AR and KEC-AR) over the MoO3/γ-alumina catalyst at the first stage and the NiMo/γ-alumina catalyst at the second stage was performed. Evolution of various heteroatom classes in the asphaltenes during the hydrotreating process was examined, focusing on removing sulfur and nitrogen species from asphaltenes. Various heteroatom classes (CcHh,CcHh-Ss, CcHh-Nn,CcHh-Oo,CcHh-NnSs, CcHh-OoSs, CcHh-NnOo, andCcHh-NnOoSs) in the asphaltenes were analyzed by using Fourier transfer ion cyclotron mass spectrometry (FT-ICR MS) linked with atmospheric pressure photoionization (APPI). According to the changes of their relative abundance, double bond equivalent (DBE), and the carbon number in the hydrotreating process, behaviors of the various heteroatom classes in the asphaltenes during the hydrotreating process were interpreted. Two distinctive differences in heteroatom reduction were observed for two different AR samples, and qualitative evaluation was attempted for providing possible scenarios. © 2021 American Chemical Society. |
| 18. |
Cui, Q., Ma, X., Nakano, K., Nakabayashi, K., Miyawaki, J., Al-Mutairi, A., Marafi, A.M.J., Al-Otaibi, A.M., Yoon, S.-H., Mochida, I., Effect of blending on hydrotreating reactivities of atmospheric residues: Synergistic effects, Fuel
Volume 293, 1 June 2021, Article number 120429, DOI: 10.1016/j.fuel.2021.120429, 293, Article number 120429, 2021.06, In order to clarify the effect of blending heavy atmospheric residues (AR) and light AR on reactivities for hydrodesulfurization (HDS), hydrodenitrogenation (HDN), hydrodevanadium (HDV), hydrodenickel (HDNi), hydrodeasphaltenes (HDAsp) and hydrodeconradson-carbon-residue (HDCCR) in hydrotreating process, hydrotreating of the blends from two ARs at different ratios was conducted in a fixed-bed unit at 370 °C under a H2 pressure of 13.5 MPa over a set of commercial HDM and HDS catalysts. The compositions and properties of the two ARs and their blends as well as their hydrotreated products were analyzed and compared in detail. A positive synergistic effect of the blending was found for HDS, HDN and HDCCR, while a negative synergistic effect of the blending was observed for HDAsp, HDV and HDNi. A synergistic effect index (ηi,s) was proposed to describe quantitatively the extent of the blending synergistic effect. The observed synergistic effects can be attributed to change of the aromatics-to-saturates ratio in the blends. In addition, composition and property of the hydrotreated products from the blending feedstocks with different blending ratios were well estimated on the basis of the developed models with an average relative deviation less than 1.5 %.. |
| 19. |
Fengjing Jiang, Weineng Liao, Tsubasa Ayukawa, Seong-Ho Yoon, Koji Nakabayashi, Jin Miyawaki, Enhanced performance and durability of composite bipolar plate with surface modification of cactus-like carbon nanofibers, Journal of Power Sources, 482, 228903 (2021), DOI: 10.1016/j.jpowsour.2020.228903, 482, article No.: 228903, 2021.01, To sufficiently improve the electrical conductivity of composite bipolar plates is crucial for their application in fuel cells and redox flow batteries. Eliminating the resin-rich layer on the surface of composite bipolar plates turns to be an effective approach. In this work, graphite/resin composite bipolar plates with advanced performance and durability are obtained after surface treatment with cactus-like carbon nanofibers which grow from the catalyst cores and stretch out to form cactus-like structures. Morphology and structure of the carbon nanofibers, as well as the morphology, electrical conductivity, electrochemical properties and charge-discharge performance of the bipolar plates in a vanadium redox flow battery (VRFB) are investigated. Results show that surface treatment with graphitized cactus-like carbon nanofibers significantly enhance the conductivity of the composite plates which reaches as high as 198.7 S cm−1, and the area specific resistance can be reduced to 25.4 mΩ cm2. The VRFB single cell with the modified bipolar plate exhibits very high energy efficiency of 86.28%, at 100 mA cm−2, and shows excellent durability in charge-discharge cycling test. With the superior properties above, composite bipolar plates after surface treatment with cactus-like carbon nanofibers are promising candidates for VRFBs.. |
| 20. |
Keiko Ideta, Doo-Won Kim, Taegon Kim, Koji Nakabayashi, Jin Miyawaki, Joo-Il Park, and Seong-Ho Yoon , 19F ex situ solid-state NMR study on structural differences in pores of activated carbon series derived from chemical and physical activation processes for EDLCs, Journal of Physical Chemistry C, 24(23), 12457-12465 (2020), DOI: 10.1021/acs.jpcc.0c02106, 8, 12457-12465, 2020.06, This study demonstrates the differences in the capacitive behaviors between the pore structures generated by physical and chemical activation and infiltrated electrolyte ions in the pores. Three paired samples were successfully synthesized with similar specific surface areas and average pore widths through steam activation (physical) and KOH activation (chemical) processes. Their capacitive behaviors were investigated with their effective charge (β) values through 19F ex situ solid-state NMR and electrochemical methods. Despite their similar pore characteristics, their capacitive behaviors were totally different because of the differences in their surface structures such as the edge-rich for KOH activation and basal-rich for steam activation. The KOH-activated series displayed higher capacitances and β values than those of the steam-activated series due to the existence of an edge-rich surface structure, which induced more effective charging under electrochemical polarization. Additionally, the pore development model (domain theory) through the KOH and steamactivation approaches was discussed by using the β values and chemical shifts by using this 19F ex situ solid-state NMR technique. Copyright © 2020 American Chemical Society.. |
| 21. |
Shimanoe, H., Mashio, T., Nakabayashi, K., Inoue, T., Hamaguchi, M., Miyawaki, J., Mochida, I., Yoon, S.-H., Manufacturing spinnable mesophase pitch using direct coal extracted fraction and its derived mesophase pitch based carbon fiber, Carbon
Volume 158, March 2020, Pages 922-929, 10.1016/j.carbon.2019.11.082, 8, 922-929, 2020.03, Spinnable mesophase pitch with high pitch yield of more than 50 wt% was successfully prepared using direct bitumen coal extracted fraction through the three-step process of hydrogenation, N2 blowing heat treatment, and thin-layer evaporation. The prepared mesophase pitch was smoothly spun to the fibrous form and could be converted into mesophase pitch-based carbonized and graphitized fibers through the usual oxidative stabilization, carbonization, and graphitization. The prepared mesophase pitch based carbon fibers showed typical random transversal structures with mechanical performances, tensile strengths of 1.83 GPa and 3.00 GPa, Young's moduli of 133 GPa and 450 GPa, and elongation properties of 1.37% and 0.68% after heat treatments at 1000 °C for 30 min and 2800 °C for 10 min, respectively. The relatively high-molecular-weight and well-developed polynuclear aromatic molecular structure of hypercoal is the likely reason for the high mesophase pitch yield. The meaning of each preparation processes, hydrogenation, N2 blowing heat treatment and thin layered evaporation, was discussed in detail. We anticipate that the success of high-yield mesophase pitch manufacturing using hypercoal as raw material will be an important key to innovatively reduce the production cost of mesophase pitch-based carbon fiber.. |
| 22. |
Nakabayashi, K., Matsuo, Y., Isomoto, K., Teshima, K., Ayukawa, T., Shimanoe, H., Mashio, T., Mochida, I., Miyawaki, J., Yoon, S.-H., Establishment of Innovative Carbon Nanofiber Synthesis Technology Utilizing Carbon Dioxide, ACS Sustainable Chemistry and Engineering
Volume 8, Issue 9, 9 March 2020, Pages 3844-3852, 10.1021/acssuschemeng.9b07253, 8, 3844-3852, 2020.03, The 18th century industrial revolution dramatically changed people's lives and allowed for rapid growth of the global economy. However, since that time, the mass consumption of fossil fuels has resulted in the release of large amounts of carbon dioxide (CO2) into the atmosphere, creating a greenhouse effect and global warming. In turn, global warming poses a serious threat to the workings of society. Thus, the immobilization of emitted CO2 and the development of effective CO2 utilization technologies are currently being investigated toward the development of a sustainable society. This study proposes the manufacture of carbon nanofiber (CNF) materials using CO2 gas as a carbon source. It is expected that this technology will be valuable as a means of recapturing CO2. We report herein the effects of CO2 on CNF growth using CO2 and hydrocarbon gases on simple catalytic chemical vapor deposition (CCVD) catalysts, including Fe, Ni, and Co. Four factors were examined: The effectiveness of the catalyst, the reaction temperature, the CO2 concentration, and the specific hydrocarbons supplied in the feed gas. Use of these techniques will enable one to expect (1) future utilization of exhaust gas emitted from thermal power stations and factories as a carbon source and (2) the future possibility of directly converting CO2 to CNF by utilizing the heat given off by emission from factories and other thermal power-generating facilities as a heat source in CNF synthesis, as well as the future possibility of proposing an effective CO2 utilization system that will be revolutionary in its impact. . |
| 23. |
Pal, A., Uddin, K., Saha, B.B., Thu, K., Kil, H.-S., Yoon, S.-H., Miyawaki, J., A benchmark for CO2 uptake onto newly synthesized biomass-derived activated carbons, Applied Energy
Volume 264, 15 April 2020, Article number 114720, 10.1016/j.apenergy.2020.114720, 264, Article number 114720, 2020.04, To properly address the threat of global warming, there is an urgent need to reduce CO2 from the atmosphere through the development of environment-friendly technologies. Therefore, capturing/storage and utilization of CO2 as a refrigerant for adsorption cooling/heating technologies have been gaining momentum in the last decades. This study focuses on the development of novel activated carbons (ACs) with extremely large pore volume and high surface area from environment-friendly and abundantly available biomass precursor seeking higher CO2 adsorption capacity. Four AC samples are synthesized from the two biomass precursor's namely waste palm trunk (WPT) and mangrove (M) employing potassium hydroxide as an activating agent. The porous properties of the synthesized ACs are investigated from the N2 adsorption/desorption data. It is praiseworthy to elucidate that the highest surface area and pore volume for biomass-derived ACs (BACs) are obtained 2927 m2 g−1 and 2.87 cm3 g−1, respectively. CO2 adsorption characteristics are investigated using a high precision magnetic suspension balance unit at five different temperatures ranging from 25 to 70 °C with various pressures. The WPT-AC (C500)/CO2 pair shows the highest adsorption uptake as high as 1.791 g g−1 (excess adsorption) and 2.172 g g−1 (absolute adsorption) at 25 °C and 5.04 MPa, which is superior to any other ACs reported to date. To the best of our knowledge, porous properties and adsorption uptake of CO2 reported in this study are the up-to-date benchmarks. The results show that novel BACs/CO2 pairs possess remarkably high adsorption performance, which will contribute towards the advancement of various adsorption-based technologies.. |
| 24. |
Ryu, D.-Y., Nakabayashi, K., Shimohara, T., Morio, U., Mochida, I., Miyawaki, J., Jeon, Y., Park, J.-I., Yoon, S.-H., Behaviors of cellulose-based activated carbon fiber for acetaldehyde adsorption at low concentration, Applied Sciences (Switzerland)
Volume 10, Issue 1, 1 January 2020, Article number 25, 10.3390/app10010025, 10, Article No.25, 2020.01, The toxic nature of acetaldehyde renders its removal from a wide range of materials highly desirable. Removal of low-concentration acetaldehyde (a group 1 carcinogenic volatile organic compound) using an adsorbent of cellulose-based activated carbon fiber modified by amine functional group (A@CACF-H) is proposed, using 2 ppm of acetaldehyde balanced with N2/O2 (79/21% v/v) observed under continuous flow, with a total flow rate of 100 mL/min over 50 mg of A@CACF-H. The effective removal of the targeted acetaldehyde is achieved by introducing the functionalized amine at optimized content. The removal mechanism of A@CACF-H is elucidated using two-dimensional gas chromatography coupled with time-of-flight mass spectrometry (2D-GC TOF-MS), indicating the efficacy of the proposed acetaldehyde removal method.. |
| 25. |
Xiongchao Lin, Jinchang Liu, Keiko Ideta, Jin Miyawaki, Yonggang Wang, Isao Mochida, Seongho Yoon, Cation induced microstructure and viscosity variation of molten synthetic slag analyzed by solid-state NMR, Fuel, 267, 1 May 2020, 117310
, 10.1016/j.fuel.2020.117310, 267, 117310, 2020.05. |
| 26. |
Kui Shia, Jianxiao Yanga, Jun Li, Xiaxiang Zhang, Wei Wu, Hongbo Liua, Seong-Ho Yoon, Xuanke Li, Effect of oxygen-introduced pitch precursor on the properties and structureevolution of isotropic pitch-basedfibers during carbonization andgraphitization, Fuel Processing Technology, 199, 106291 March (2020). https://doi.org/10.1016/j.fuproc.2019.106291, https://doi.org/10.1016/j.fuproc.2019.106291, 199, 106291, 2020.02. |
| 27. |
Jinchang Liu, Hiroki Shimanoe, Seunghyun Ko, Hansong Lee3, Caehyun Jo3, Jaewoong Lee, Seong-Hwa Hong, Hyunchul Lee, Young-Pyo Jeon, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon, Highly chlorinated polyvinyl chloride as a novel precursor for fibrous carbon material , Polymers 2020, 12(2), 328; https://doi.org/10.3390/polym12020328, https://doi.org/10.3390/polym12020328, 12, 2, 328, 2020.01. |
| 28. |
，Shimanoe, H., Ko, S., Jeon, YP, Nakabayashi, K., Miyawaki, J., Yoon, S-.H., Shortening Stabilization Time Using Pressurized Air Flow in Manufacturing Mesophase Pitch-Based Carbon Fiber, POLYMERS, 11-12, Article No. 1911, DOI: 10.3390/polym11121911, 11, 12, Article No. 1911, 2020.01. |
| 29. |
Lee, S.H., Lee, S.M., Im, U.-S., Kim, S.-D., Yoon, S.-H., Lee, B.-R., Peck, D.-H., Shul, Y.-G., Jung, D.-H., Preparation and characterization of high-spinnability isotropic pitch from 1-methylnaphthalene-extracted low-rank coal by co-carbonization with petroleum residue Carbon, Carbon, 155, 186-194 (2019). , 155, 186-194, 2019.10. |
| 30. |
Cui, Q., Ma, X., Nakabayashi, K., Miyawaki, J., Al-Mutairi, A., Marafi, A.M.J., Al-Otaibi, A.M., Yoon, S.-H., Mochida, I., Interaction of Vanadyl Complexes in Atmospheric Residue with Their Matrixes: An ESR Study in a Temperature Range up to 170 °C, Journal of Physical Chemistry C, 123, 20587-20593 (2019). , 123, 20587-20593, 2019.10. |
| 31. |
Ko, S., Choi, J.-E., Yim, H., Miyawaki, J., Yoon, S.-H, Jeon, Y.-P., Improved understanding of the molecular structure of pyrolysis fuel oil: towards its utilization as a raw material for mesophase pitch synthesis, Carbon Letters, 29, 307-317 (2019). , 29, 307-317, 2019.10. |
| 32. |
Dae Eon Jung, Dabin Chung, Seong Ho Yoon, Byoung Chul Kim
, The Preparation and Properties of Isotropic Pitch-Based Carbon Felt Prepared by Solvent-Supported Dual Concentric Electrospinning, Macromolecular Research
, 27, 10, 1024-1027, 2019.10. |
| 33. |
Nakabayashi, K., Yi, H., Ryu, D.-Y., Chung, D., Miyawaki, J., Yoon, S.-H., Enhancement of first cycle coulombic efficiency of hard carbon derived from Eucalyptus in a sodium ion battery, Chemistry Letters, 48, 753-755 (2019). , 48, 753-755, 2019.07. |
| 34. |
Jeon, M.-S., Lee, Y., Jung, H.-K., Kim, H.-J., Yoon, S.-H., Kim, T., Park, J.-I., The chemical aspects on hydrotreating catalysis for residue, Korean Chemical Engineering Research, 57, 455-460 (2019)., 57, 455-460, 2019.06. |
| 35. |
Lee, C., Na, H., Jeon, Y., Jung Hwang, H., Kim, H.-J., Mochida, I., Yoon, S.-H., Park, J.-I., Shul, Y.-G., Poly(ether imide) nanofibrous web composite membrane with SiO2 /heteropolyacid ionomer for durable and high-temperature polymer electrolyte membrane (PEM) fuel cells, Journal of Industrial and Engineering Chemistry, 74, 25 7-13, June (2019)., 74, 25, 7-13, 2019.06. |
| 36. |
Liu, J., Shimanoe, H., Choi, J.-E., Ko, S., Jeon, Y.-P., Nakabayashi, K., Miyawaki, J., Yoon, S.-H, Effect of the pre-treated pyrolysis fuel oil: Coal tar pitch ratio on the spinnability and oxidation properties of isotropic pitch precursors and the mechanical properties of derived carbon fibers, Carbon Letters, 29, 2, 193-202, April (2019)., 29, 2, 193-202, 2019.04. |
| 37. |
Özsin, G., Pütün, A.E., Nakabayashi, K., Miyawaki, J., Yoon, S.-H., Environmental-friendly production of carbon fiber from isotropic hybrid pitches synthesized from waste biomass and polystyrene with ethylene bottom oil, Journal of Cleaner Production, 239, 1 Article number 118025 December (2019). , https://doi.org/10.1016/j.jclepro.2019.118025, 239, Article number 118025, 2019.12. |
| 38. |
Dong-YeonRyu, Takaaki Shimohara, Koji Nakabayashi, Jin Miyawaki, Joo-Il Park, Seong-HoYoon, Urea/nitric acid co-impregnated pitch-based activated carbon fiber for the effective removal of formaldehyde, Journal of Industrial and Engineering Chemistry, 80, 25 98-105 December (2019). , https://doi.org/10.1016/j.jiec.2019.07.036, 80, 25, 98-105, 2019.12. |
| 39. |
Kui Shia, Jianxiao Yanga, Jun Li, Xiaxiang Zhang, Wei Wu, Hongbo Liua, Seong-Ho Yoon, Xuanke Li, Effect of oxygen-introduced pitch precursor on the properties and structureevolution of isotropic pitch-basedfibers during carbonization andgraphitization, Fuel Processing Technology, 199, 106291 March (2020). , https://doi.org/10.1016/j.fuproc.2019.106291, 199, 106291, 2019.03. |
| 40. |
Kim, T., Naoki, W., Miyawaki, J., Park, J.-I., Lee, C., Jung, H.-K., Jeon, M.-S., Kim, H.-J., Yoon, S.-H., Synthesis of surface-replicated ultra-thin silica hollow nanofibers using structurally different carbon nanofibers as templates, Journal of Solid State Chemistry, 272, 21-26, April (2019), 272, 21-26, 2019.04. |
| 41. |
Yao Yu, Hyun-Sig Kil, Koji Nakabayashi, Seong-Ho Yoon, Jin Miyawaki, Toward development of activated carbons with enhanced effective adsorption amount by control of activation process, Journal of the Japan Petroleum Institute, 2097, 020002, 2019.04. |
| 42. |
Sano, Y., Karasawa, T., Inomata, M., Mochida, I., Miyawaki, J., Yoon, S.-H, Ultra-deep desulfurization process of diesel fuel with adsorption treatment, Journal of the Japan Petroleum Institute, 62, 2, 61-66, 2019.02. |
| 43. |
Kim, J., Yi, Y., Peck, D.-H., Yoon, S.-H., Jung, D.-H., Park, H.S., Controlling hierarchical porous structures of rice-husk-derived carbons for improved capacitive deionization performance, Environmental Science: Nano, 6, 3, 916-924, 2019.01. |
| 44. |
Liu, J., Shimanoe, H., Nakabayashi, K., Miyawaki, J., Choi, J.-E., Jeon, Y.-P., Yoon, S.-H., Enhancing the oxidative stabilization of isotropic pitch precursors prepared through the co-carbonization of ethylene bottom oil and polyvinyl chloride, Journal of Industrial and Engineering Chemistry, 67, 25, 358-364, 2018.11. |
| 45. |
Liu, J., Shimanoe, H., Nakabayashi, K., Miyawaki, J., Choi, J.-E., Jeon, Y.-P., Yoon, S.-H., Preparation of isotropic pitch precursor for pitch-based carbon fiber through the co-carbonization of ethylene bottom oil and polyvinyl chloride, Journal of Industrial and Engineering Chemistry, 67, 25, 267-283, 2018.11, For the first time, polyvinyl chloride (PVC) was used as an easily-handled chlorine source for preparation of isotropic pitch-based carbon fiber (IPCF) incorporating ethylene bottom oil (EO) as a raw material. Pitch precursors were prepared by the chlorination–dehydrochlorination triggered by chlorine radicals originated from PVC; aromatization and poly-condensation reactions occurred by polyene-type radicals from PVC. Radical production and co-carbonization were facilitated by pretreatments of EO through vacuum distillation, bromination, and additional heat treatment. Pitches were prepared by the cocarbonization of pretreated EO and EO containing 20 wt% PVC, and had higher yields and better spinnability than those by simple distillation.. |
| 46. |
Seongho YOON, Fast Water Relaxation through One-Dimensional Channels by Rapid Energy Transfer, Ohba, T., Ideta, K., Hata, K., Yoon, S.-H., Miyawaki, J., Hata, K., ChemPhysChem, in press (2016)., ChemPhysChem, in press (2016)., in press (2016)., 2016.11. |
| 47. |
Seongho YOON, Evaluation of the thermal and rheological characteristics of minerals in coal using SiO2-Al2O3-CaO-FeOx quaternary system, Wang, C.-H., Lin, X.-C., Yang, S.-S., Liu, S.-Q., Yoon, S., Wang, Y.-G. Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology. 44 (9), 1025-1033, September (2016). , Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology. 44 (9), 1025-1033, September (2016). , 44 (9), 1025-1033, September (2016). , 2016.09. |
| 48. |
Seongho YOON, An asymmetrical activated carbon electrode configuration for increased pore utilization in a membrane-assisted capacitive deionization system, Kim, J., Peck, D.-H., Lee, B., Yoon, S.-H., Jung, D.-H. Xinxing Tan Cailiao/New Carbon Materials, 31(4), 378-385 (2016)., Xinxing Tan Cailiao/New Carbon Materials, 31(4), 378-385 (2016)., 31(4), 378-385 (2016)., 2016.04. |
| 49. |
Seongho YOON, Synthesis and Characteristics of Silica-Coated Carbon Nanofibers on Electroplated Co–Ni/C-Fiber Textiles, Kun-Ho Jang, Sang-Hoon Lee, Yujin Han, Seong-Ho Yoon, and Chang-Seop Lee, Journal of Nanoscience and Nanotechnology, 16, 10767–10771 (2016)., Journal of Nanoscience and Nanotechnology, 16, 10767–10771 (2016)., 16, 10767–10771 (2016)., 2016.04. |
| 50. |
Seongho YOON, Effect of heat pre-treatment conditions on the electrochemical properties of mangrove wood-derived hard carbon as an effective anode material for lithium-ion batteries, Yu-Jin Han, Dabin Chung, Koji Nakabayashi, Jin-Do Chung, Jin Miyawaki, Seong-Ho Yoon, Electrochimica Acta, 213, 20, 432–438 September (2016)., Electrochimica Acta, 213, 20, 432–438 September (2016)., 213, 20, 432-438, 2016.02. |
| 51. |
Seongho YOON, Preparation of pitch based carbon fibers using Hyper-coal as a raw material, Jianxiao Yanga, 1, Koji Nakabayashi, Jin Miyawaki, Seong-Ho Yoon, Carbon, 106, 28–36, September (2016)., Carbon, 106, 28–36, September (2016)., 106, 28-36, 2016.03. |
| 52. |
Seongho YOON, C4F8 plasma treatment of as an effective route for improving rate performance of natural/synthetic graphite anodes in lithium ion batteries, Choonghyeon Lee, Yu-Jin Han, Young Deok Seo, Koji Nakabayashi, Jin Miyawaki, Ricardo Santamaría, Rosa Menéndez, Seong-Ho Yoon, and Jyongsik Jang, Carbon, 103, 28-35 (2016), Carbon, 103, 28-35 (2016), 103, 28-35, 2016.03. |
| 53. |
Seongho YOON, Control of Nitrogen Content and its Effects on the Electrochemical Behavior of Nitrogen-doped Carbon Nanofibers, Jiyoung Kim, Jin-Sung Jang, Dong-Hyun Peck, Byungrok Lee, Seong-Ho Yoon, Doo-Hwan Jung, Journal of Electroanalytical Chemistry,768, 34-40 (2016)., Journal of Electroanalytical Chemistry,768, 34-40 (2016), 768, 34-40, 2016.03. |
| 54. |
Seongho YOON, Enhancing the tensile strength of isotropic pitch-based carbon fibers by improving the stabilization and carbonization properties of precursor pitch, Byung-Jun Kim, Toru Kotegawa, Youngho Eom, Jungchul An, Ik-Pyo Hong, Osamu Kato, Koji Nakabayashi, Jin Miyawaki, Byoung Chul Kim, Isao Mochida, Seong-Ho Yoon, Carbon, 99, 649–657, April (2016). , Carbon, 99, 649–657, April (2016), 99, 649-657, 2016.03. |
| 55. |
Seongho YOON, Fabrication of monolithic carbon nanofiber/carbon composites, Ge, X., Chen, M., Wang, J., Long, D., Ling, L., Qiao, W., Mochida, I., Yoon, S.-H., RSC Advances, 6, 6443-6450 (2016). , RSC Advances, 6, 6443-6450 (2016). , 6, 6443-6450, 2016.03. |
| 56. |
Seongho YOON, Preparation of isotropic pitch-based carbon fiber using hyper coal through co-carbonation with ethylene bottom oil, Yang, J., Nakabayashi, K., Miyawaki, J., Yoon, S.-H., Journal of Industrial and Engineering Chemistry, 34, 397-404, February (2016)., Journal of Industrial and Engineering Chemistry, 34, 397-404, February (2016)., 34, 397-404, 2016.02. |
| 57. |
Seongho YOON, Enhancement of the rate performance of plasma-treated platelet carbon nanofiber anodes in lithium-ion batteries, RSC Advances, 6, 4810-4817 (2016) DOI：10.1039/C5RA20650B., 6, 4810-4817 , 2016.01. |
| 58. |
Seongho YOON, The characterization of metal complexes in typical Kuwait atmospheric residues using both GPC coupled with ICP-MS and HT GC-AED, Journal of Industrial and Engineering Chemistry, 34, 25 204-212 February (2016)., 34, 25, 204-212, 2015.01. |
| 59. |
Seongho YOON, Synthesis and characterization of high-softening-point methylene bridged pitches by visible light irradiation assisted free-radical bromination, Carbon, 95, 780-788 (2015)., 95, 780-788, 2015.01. |
| 60. |
Seongho YOON, Coating of graphite anode with coal tar pitch as an effective precursor for enhancing the rate performance in Li-ion batteries: Effects of composition and softening points of coal tar pitch, Carbon, 94, 432–438 November (2015)., 94, 432-438, 2015.12. |
| 61. |
Seongho YOON, Analysis of the transformation behaviors of a Chinese coal ash using in-/ex-situ XRD and SEM-EXD, Asia-Pacific Journal of Chemical Engineering, 10, 105-111 (2015), 10, 105-111, 2015.11. |
| 62. |
Seongho YOON, Adsorption of ethanol onto phenol resin based adsorbents for developing next generation cooling systems, International Journal of Heat and Mass Transfer, 81, 171–178 (2015)., 81, 171-178, 2015.10. |
| 63. |
Seongho YOON, The thermotropic liquid crystalline behavior of mesophase pitches with different chemical structures, Carbon, 81, 694-701 (2015), 81, 694-701, 2015.10. |
| 64. |
Seongho YOON, Lin X., Min-Hyun Seo, Insights into the functional group transformation of a chinese brown coal during slow pyrolysis by combining various experiments, Fuel, 118, 257-264, 2014.05. |
| 65. |
Seongho YOON, Kim Taegon, Min-Hyun Seo, Fe nanoparticle entrained in tubular carbon nanofiber as an effective electrode material for metal–air batteries: a fundamental reason, Carbon, 80, 698-707, 2014.12. |
| 66. |
Seongho YOON, Yuzo Ohata, Min-Hyun Seo, TiO2-entrained tubular carbon nanofiber and its electrochemical properties in the rechargeable Na-ion battery system, Applied Thermal Engineering, 72, 2, 309-314, 2014.10. |
| 67. |
Seongho YOON, Jiang Yong, Lin X., Microstructural transformations of two representative slags at high temperatures and effects on the viscosity, Journal of Industrial and Engineering Chemistry, 20, 1338-1345, 2014.07. |
| 68. |
Seongho YOON, Byung Jun Kim, Min-Hyun Seo, Preparation of carbon fibers with excellent mechanical properties from isotropic pitches, Carbon, 77, 747-755, 2014.06. |
| 69. |
持田 勲, Okuma Osamu, Seongho YOON, Chemicals from coal liquefaction, Chemical Reviews, 114, 3, 1637-1672, 2014.03. |
| 70. |
Tae-Gon Kim, Park, J.-I, Seongho YOON, Hydrotreatment of two atmospheric residues from Kuwait Export and Lower Fars crude oils, Fuel, 117, 191-197, 2014.02. |
| 71. |
Motoyama. Y, Taguchi, M, Seongho YOON, Chemoselective Hydrogenation of Functionalized Nitroarenes and Imines by Using Carbon Nanofiber-Supported Iridium Nanoparticles, Chemistry - An Asian Journal, 9, 1, 71-74, 2014.02. |
| 72. |
Lee, K.J., Shiratori Nanako, Seongho YOON, Toward an effective adsorbent for polar pollutants: Formaldehyde adsorption by activated carbon, Journal of Hazardous Materials, 260, 82-88, 2013.08. |
| 73. |
Tae gon Kim, Park, J.-I, Seongho YOON, Identification and quantification of (alkyl)benzenes in hydrocracked products of light cycle oil by GC-AED, Fuel, 111, 883-886, 2013.10. |
| 74. |
Kim, Y.-K, Park, J.-I, Seongho YOON, Low-temperature catalytic conversion of lignite: 3. Tar reforming using the supported potassium carbonate, Journal of Industrial and Engineering Chemistry, 20, 1, 9-12, 2013.10. |
| 75. |
Kim, Y.-K, Park, J.-I, Seongho YOON, Low-temperature catalytic conversion of lignite: 2. Recovery and reuse of potassium carbonate supported on perovskite oxide in steam gasification, Journal of Industrial and Engineering Chemistry, 20, 1, 194-201, 2013.10. |
| 76. |
Kim, Y.-K, Park, J.-I, Seongho YOON, Low-temperature catalytic conversion of lignite: 1. Steam gasification using potassium carbonate supported on perovskite oxide, Journal of Industrial and Engineering Chemistry, 20, 1, 216-221, 2013.10. |
| 77. |
Azizi, N, Kim, Y.-K, Seongho YOON, Catalytic steam gasification of waste palm tree trunk derived Bio-Char, Applied Mechanics and Materials,, 315, 252-259, 2013.05. |
| 78. |
Tae-gon Kim, Juil Park, Seongho YOON, Analysis and deep hydrodesulfurization reactivity of Saudi Arabian gas oils, Journal of Industrial and Engineering Chemistry,, 19, 5, 1577-1582, 2013.11. |
| 79. |
Hyun-Seok Kim, Yusuke Nishiyama, Keiko Ideta, Seongho YOON, Analysis of water in Loy Yang brown coal using solid-state 1H NMR, Journal of Industrial and Engineering Chemistry,, 19, 5, 1673-1679, 2013.11. |
| 80. |
Tae-Hwan Park, Jae-Seong Yeo, Yuzo Ohata, Seongho YOON, Rate Performance Enhancement of Anode for Lithium-Ion Battery via Composition of Hard Carbon And Silicon-Carbon Nanofiber, International Journal of Electrochemical Science, 8, 249-256, 2013.04. |
| 81. |
Azizi, N, Kim, Y.-K, Seongho YOON, Low temperature catalytic steam gasification of waste palm trunk by potassium carbonate supported on perovskite oxide, Advanced Materials Research, 626, 551-558 (2013), 2013.04. |
| 82. |
Jae-Seong Yeo, Tae-Hwan Park, Min-Hyun Seo, Seongho YOON, Enhancement of the Rate Capability of Graphite via the Introduction of Boron–oxygen Functional Groups, International Journal of Electrochemical Science, 8, 1308-1315 , 2013.04. |
| 83. |
Byung Jun Kim, Hyunsig Kil, Naoki Watanabe, Seongho YOON, Preparation of Novel Isotropic Pitch with High Softening Point and Solvent Solubility for Pitch-based Electrospun Nanofiber, Current Organic Chemistry, 17 , 1463-1468, 2013.03. |
| 84. |
Seongho YOON, Enhancing the rate performance of graphite anodes through addition of natural graphite/carbon nanofibers in lithium-ion batteries, Journal of Electrochimica Acta, 93, 236-240, 2013.03. |
| 85. |
Seongho YOON, Fluidized bed drying of Loy Yang brown coal with variation of temperature, relative humidity, fluidization velocity and formulation of its drying rate, Fuel , 105, 415-424, 2013.02. |
| 86. |
Seongho YOON, Modification performance of Hypercoal as an additive on co-carbonization of coal, Journal of Fuel Chemistry and Technology, 40, 1025-1032, 2012.12. |
| 87. |
Seongho YOON, Hydrotreating of light cycle oil over NiMo and CoMo catalysts with different supports, Fuel Processing Technology, 109, 172-178, 2013.02. |
| 88. |
Seongho YOON, Mild hydrocracking of 1-methyl naphthalene (1-MN) over alumina modified zeolite, Journal of Industrial and Engineering Chemistry, 19, 2, 627-632, 2013.01. |
| 89. |
Seongho YOON, Pt Nanoparticle-Reduced Graphene Oxide Nanohybrid for Proton Exchange Membrane Fuel Cells, JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 12, 5669-5672, 2012.07. |
| 90. |
Seongho YOON, Jin Miyawaki, Synthesis of silicon monoxide-pyrolytic carbon-carbon nanofiber composites and their hybridization with natural graphite as a means of improving the anodic performance of lithium-ion batteries, Nanotechnology, 23, 2012.12. |
| 91. |
Seongho YOON, Jin Miyawaki, Solid electrolyte interphase formation behavior on well-defined carbon surfaces for Li-ion battery systems, Electrochimica Acta, 77, 111-120, 2012.10. |
| 92. |
Seongho YOON, Jin Miyawaki, Structure and electrochemical applications of boron-doped graphitized carbon nanofibers, Nanotechnology, 23, 10-4404, 2012.08. |
| 93. |
Seongho YOON, Jin Miyawaki, In-situ Preparation and Electrochemical Performance of an Urchin-like Carbon Nanofibers@LiFePO4 Hybrid, INTERNATIONAL JOURNAL OF ELECTROCHEMICAL SCIENCE, 7, 4397-4404, 2012.05. |
| 94. |
Seongho YOON, Jin Miyawaki, Lee Gangho, High magnetic field solid-state NMR analyses by combining MAS, MQ-MAS, homo-nuclear and hetero-nuclear correlation experiments, MAGNETIC RESONANCE IN CHEMISTRY, 50, 289-294, 2012.10. |
| 95. |
Seongho YOON, Jin Miyawaki, Lee Gangho, Development of carbon-supported hybrid catalyst for clean removal of formaldehyde indoors, CATALYSIS TODAY, 185, 278-283, 2012.07. |
| 96. |
Seongho YOON, Correlation between fluidity properties and local structures of three typical Asian coal ashes, Energy and Fuels, 26, 2136-2144 (2012)., 26, 2136-2144, 2012.04. |
| 97. |
X. Lin, J. Miyawaki, I.Mochida, and S-H Yoon, A Study on the Correlation of Structure and Fluidity of Three Asian Coal Ashes and Slags, , Journal of Novel Carbon Resources, 5, 5-9 (2011). , 5, 5-9, 2012.01. |
| 98. |
Y-K Kim, J. Miyawaki, I.Mochida, and S-H Yoon, Tar reforming of Lignite at Low Temperatures Using Supported Potassium Carbonate, Journal of Novel Carbon Resources, 5, 1-4 (2011)., 5, 1-4, 2012.01. |
| 99. |
Young-Kwang Kima, Li-fang Hao, Joo-Il Park, Jin Miyawaki, Isao Mochida, Seong-Ho Yoon, Catalytic activity and activation mechanism of potassium carbonate supported on perovskite oxide for coal char combustion, Fuel, 94, 516-522 (2012), 94, 516-522, 2012.01. |
| 100. |
Nam, K. , Lim, S., Kim, S.-K., Yoon, S.-H. , Jung, D.-H., Application of silica as a catalyst support at high concentrations of methanol for direct methanol fuel cells, International Journal of Hydrogen Energy, 37, 4619-4626 (2012). , 37, 4619-4626, 2012.02. |
| 101. |
Li, W. , Long, D. , Miyawaki, J. , Qiao, W. , Ling, L , Mochida, I., Yoon, S.-H, Structural features of polyacrylonitrile-based carbon fibers, Journal of Materials Science, 47, 919-928 , (2012), 47, 5, 919-928, 2012.02. |
| 102. |
Motoyama, Y. , Lee, Y. , Tsuji, K. , Yoon, S.-H. , Mochida, I. , Nagashima, H., Platinum Nanoparticles Supported on Nitrogen-doped Carbon Nanofibers as Efficient Poisoning Catalysts for the Hydrogenation of Nitroarenes, ChemCatChem 3, 1578-1581 October (2011), 3, 5, 1578-1581, 2011.10. |
| 103. |
Lee, Y., Motoyama, Y., Tsuji, K., Yoon, S.-H., Mochida, I., Nagashima, H., , (Z)-Selective Partial Hydrogenation of Internal Alkynes by Using Palladium Nanoparticles Supported on Nitrogen-Doped Carbon Nanofiber , ChemCatChem 4 (6) , pp. 778-781 (2012), 4, 5, 778-781, 2012.03. |
| 104. |
Lin, Xiongchao; Ideta, Keiko; Miyawaki, Jin; Nishiyama, Yusuke; Mochida, Isao; Yoon, Seong-Ho, High magnetic field solid-state NMR analyses by combining MAS, MQ-MAS, homo-nuclear and hetero-nuclear correlation experiments, MAGNETIC RESONANCE IN CHEMISTRY, 50, 289-294, (2012), 50, 289-294, 2012.03. |
| 105. |
Lin, X., Ideta, K., Miyawaki, J., Takebe, H., Yoon, S.-H., Mochida, I., Correlation between fluidity properties and local structures of three typical Asian coal ashes , Energy and Fuels 26 (4) , pp. 2136-2144 (2012), 185, , 2136-2144, 2012.03. |
| 106. |
Jin Miyawaki, Gang-Ho Lee, Joonyoung Yeh, Nanako Shiratori, Takaaki Shimohara, Isao Mochida, Seong-Ho Yoon, Development of carbon-supported hybrid catalyst for clean removal of formaldehyde indoors, Catalysis Today, 185, , 278-283, 2012.10. |
| 107. |
Miyawaki, J., Shimohara, T., Shirahama, N., Yasutake, A., Yoshikawa, M., Mochida, I. , Yoon, S.-H, Removal of NOx from air through cooperation of the TiO2 photocatalyst and urea on activated carbon fiber at room temperature, Applied Catalysis B (Environmental), in press, 2011.10. |
| 108. |
Long, D., Li, W., Miyawaki, J, Qiao, W., Ling, L., Mochida, I., Yoon, S.-H, Meso-channel development in graphitic carbon nanofibers with various structures, Chemistry of Materials, 23, 4141-4148, 2011.09. |
| 109. |
Li, W. , Long, D. , Miyawaki, J. , Qiao, W. , Ling, L , Mochida, I., Yoon, S.-H, Structural features of polyacrylonitrile-based carbon fibers, Journal of Materials Science, in press, 2011.10. |
| 110. |
Long, D. , Li, W. , Qiao, W., Miyawaki, J. , Yoon, S.-H. , Mochida, I. , Ling, L., Graphitization behaviour of chemically derived graphene sheets, Nanoscale, 3, 3652-3656, 2011.09. |
| 111. |
Kim Jiyoung; Lim Seongyop; Kim Sang-Kyung; Seong-Ho Yoon, Doohwan Jung, Electrochemical Catalytic Activity for Oxygen Reduction Reaction of Nitrogen-Doped Carbon Nanofibers, JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 11, 6350-6358, 2011.07. |
| 112. |
Donghui Long, Wei Li, Wenming Qiao, Jin Miyawaki, Seong-Ho Yoon, Isao Mochida, and Licheng Ling, Partially unzipped carbon nanotubes as a superior catalyst support for PEM fuel cells, Chem. Commun, 47, 9429-9431, 2011.10. |
| 113. |
Park, Joo-Il, Lee, Jihn-Koo, Miyawaki, Jin, Yoon, Seong-Ho, Mochida, Isao, Catalytic oxidation of polycyclic aromatic hydrocarbons (PAHs) over SBA-15 supported metal catalysts, JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY, 17, 271-276, 2011 May, 2011.05.  |
| 114. |
Zhi Wang, Yanli Wang, Donghui Long, Isao Mochida, Wenming Qiao,Liang Zhan, Xiaojun Liu,Seong-Ho Yoon, and Licheng Ling, Kinetics and Mechanism Study of Low-Temperature Selective Catalytic Reduction of NO with Urea Supported on Pitch-Based Spherical Activated Carbon, Industrial & Engineering Chemistry Research, April 08, 2011, 2011.04. |
| 115. |
Lv, Ruitao, Cui, Tongxiang, Jun, Mun-Suk, Zhang, Qiang, Cao, Anyuan, Su, Dang Sheng, Zhang, Zhengjun, Yoon, Seong-Ho, Miyawaki, Jin, Mochida, Isao, Kang, Feiyu, Open-Ended, N-Doped Carbon Nanotube-Graphene Hybrid Nanostructures as high-Performance Catalyst Support, ADVANCED FUNCTIONAL MATERIALS, 21, 999-1006, 2011.03. |
| 116. |
Joo-Il Park, Jihn-Koo Lee, Jin Miyawaki, Seong-Ho Yoon, Isao Mochida
, Characteristics on HDS over amorphous silica-alumina in single and dual catalytic bed system for gas oil, Catalysis Today, In Press, 2011.01. |
| 117. |
Nakano, K., Pang, W., Lee, J.-K., Park, J.-I., Yoon, S.-H., Mochida, I. , Activity of alumina-silica-supported NiMoS prepared by controlled mixing of alumina into SiO2 hydrogels for HDS of gas oil
, Fuel Processing Technology, in press, 2011.01. |
| 118. |
Chang-Min Yoon, Donghui Long, Sang-Min Jang, Wenming Qiao, Licheng Ling, Jin Miyawaki, Choong-Kyun Rhee, Isao Mochida, Seong-Ho Yoon, Electrochemical surface oxidation of carbon nanofibers
, Carbon, 49, 96-105, 2011.01. |
| 119. |
Yoon, Seong-Ho; Long, Donghui; Li, Wei; Ling, Licheng; Miyawaki, Jin; Mochida, Isao, Preparation of nitrogen-doped graphene sheets by a combined chemical and hydrothermal reduction of graphene oxide, Langmuir, in press (2010)., 2010.12. |
| 120. |
Donghui Long, Bai An, Kiyoshi Yokogawa, Licheng Ling, Jin Miyawaki, Isao Mochida, Seong-Ho Yoon, Structural Units and Their Periodicity in Carbon Nanotubes, Small, 6, 2526-2529, 2010.11. |
| 121. |
Weiwei Pang, Jihn-Koo Lee, Seong-Ho Yoon, Isao Mochida, Takashi Ida, Masaru Ushio, Compositional analysis of deasphalted oils from Arabian crude and their hydrocracked products, Fuel Processing Technology, 91, Pages 1517-1524 (2010)., 2010.10. |
| 122. |
Joo-Il Park, Jihn-Koo Lee, Jin Miyawaki, Young-Kwang Kim, Seong-Ho Yoon, Isao Mochida
, Hydro-conversion of 1-methyl naphthalene into (alkyl)benzenes over alumina-coated USY zeolite-supported NiMoS catalysts, Fuel, In Press, Corrected Proof, Available online 20 September 2010
, 2010.12. |
| 123. |
Kyung Jin Lee, Nanako Shiratori, Gang Ho Lee, Jin Miyawaki, Isao Mochida, Seong-Ho Yoon, Jyongsik Jang
, Activated carbon nanofiber produced from electrospun polyacrylonitrile nanofiber as a highly efficient formaldehyde adsorbent , Carbon, Volume 48, Issue 15, December 2010, Pages 4248-4255
, 2010.12. |
| 124. |
Joo-Il Park, Jihn-Koo Lee, Jin Miyawaki, Wei-Wei Pang, Seong-Ho Yoon, Isao Mochida, Platinum catalysts supported on hydrothermally stable mesoporous aluminosilicate for the catalytic oxidation of polycyclic aromatic hydrocarbons (PAHs), Catalysis Communications, 11, 1068-1071 (2010)., 2010.06. |
| 125. |
Xinlu Li, Seong-Ho Yoon, Kun Du, Yuxin Zhang, Jiamu Huang and Feiyu Kang, An urchin-like graphite-based anode material for lithium ion batteries, ELECTROCHIMICA ACTA, 55, 5519-5522 (2010) ., 2010.05. |
| 126. |
Liu, Tao, Luo, Ruiying, Qiao, Wenming, Yoon, Seong-Ho, Mochida, Isao, Microstructure of carbon derived from mangrove charcoal and its application in Li-ion batteries, ELECTROCHIMICA ACTA, 55, 1696-1700 (2010). , 2010.04. |
| 127. |
Liu T, Luo RY, Yoon SH, Mochida I, Anode performance of boron-doped graphites prepared from shot and sponge cokes , JOURNAL OF POWER SOURCES, 195, 6, 1714-1719, 2010.03. |
| 128. |
Liu T, Luo RY, Yoon SH, Mochida I, Effect of vacuum carbonization treatment on the irreversible capacity of hard carbon prepared from biomass material, Materials letters, 64, 1, 74-76, 2010.01. |
| 129. |
Sang-Min Jang, Jin Miyawaki, Masaharu Tsuji,Isao Mochida, Seong-Ho Yoon, The Preparation of a Novel Si-CNF Composite as an Effective Anodic Material for Lithium-ion Batteries, Carbon, 47, 15, 3383-3391, 2009.12. |
| 130. |
Sang-Min Jang, Jin Miyawaki, Masaharu Tsuji,Isao Mochida, Seong-Ho Yoon, Fei-Yu Kang, Preparation of CNF-NG Composite and its Electrochemical Properties as an Anode Material of Li-ion Battery, New Carbon Materials, 2009.12. |
| 131. |
Pang, W. W., Zhang, Y. Z.,Choi, K-H, Lee, J. K., Yoon, S. H.,Mochida, I., Nakano, K., Design of Catalyst Support for Deep Hydrodesulfurization of Gas Oil, PETROLEUM SCIENCE AND TECHNOLOGY, 27, 12, 1349-1359, 2009.09. |
| 132. |
N. Shiratori, K. Lee, J. Miyawaki, S. Hong,I. Mochida, B. An, K. Yokogawa, J. Jang, S. Yoon, Pore Structure Analysis of Activated Carbon Fiber by Microdomain-Based Model, Langmuir, 25, 13, 7631-7637, 2009.07. |
| 133. |
S. Lim, S. Yoon, I. Mochida, D. Jung
, Direct Synthesis and Structural Analysis of Nitrogen-Doped Carbon Nanofibers, Langmuir
, 25, 14, 8268-8273, 2009.03. |
| 134. |
W. M. Qiao, Y. Song, S. H. Hong, S. Y. Lim, S.-H. Yoon, Y. Korai, and I. Mochida, Development of Mesophase Pitch Derived Mesoporous Carbons through a Commercially
Nanosized Template, Langmuir, 22(8), 3791-3797, 2006.04. |
| 135. |
Seong-Ho Yoon, Seongyop Lim, Seong-hwa Hong, Wenming Qiao, D. Duayne Whitehurst, Isao Mochida, Bei An and Kiyoshi Yokogawa, A conceptual model for the structure of catalytically grown carbon nano-fibers, Carbon, 10.1016/j.carbon.2005.02.031, 43, 9, 1828-1838, Volume 43, Issue 9, August 2005, Pages 1828-1838, 2005.08. |
