Updated on 2024/08/09

Information

 

写真a

 
KHAN SOVANN
 
Organization
International Institute for Carbon-Neutral Energy Research Advanced Energy Conversion Systems Thrust Academic Researcher
Title
Academic Researcher
External link

Papers

  • Indoor gas phase photoactivity of yttrium modified titanate films for fast acetaldehyde oxidation

    Chemosphere   275   129992 - 129992   2021.7

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    Language：Others   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.chemosphere.2021.129992

  • Phase control of manganese sulfides during hydrothermal synthesis and their photocatalytic activity for H2 generation

    Sovann Khan, Wenwei Lei, Kai Takagi, Akihiro Uchida, Norihiro Suzuki, Chiaki Terashima, Vicente Rodr{'{i } }guez-Gonz{'{a } }lez, Akira Fujishima, Ken-ichi Katsumata

    Materials Letters   130174 - 130174   2021.6

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.matlet.2021.130174

  • C-doped ZnS-ZnO/Rh Nanosheets as Multijunctioned Photocatalysts for Effective H2 Generation from Pure Water under Solar Simulating Light

    Sovann Khan, Minyeong Je, Nhan Nu Thanh Ton, Wenwei Lei, Toshiaki Taniike, Sayaka Yanagida, Daisuke Ogawa, Norihiro Suzuki, Chiaki Terashima, Akira Fujishima, Heechae Choi, Ken-ichi Katsumata

    Applied Catalysis B: Environmental   2021.6

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    Language：Others   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.apcatb.2021.120473

  • Hierarchical structures hydrogel evaporator and superhydrophilic water collect device for efficient solar steam evaporation

    Wenwei Lei, Sovann Khan, Lie Chen, Norihiro Suzuki, Chiaki Terashima, Kesong Liu, Akira Fujishima, Mingjie Liu

    Nano Research   2020.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s12274-020-3162-5

  • Self-assembled heterojunction of metal sulfides for improved photocatalysis

    Sovann khan

    Chemical Engineering Journal   2020.9

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.cej.2020.125092

  • One-Pot Synthesis of Anatase, Rutile-Decorated Hydrogen Titanate Nanorods by Yttrium Doping for Solar H2 Production

    ACS Omega   2020.9

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    Language：Others   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acsomega.0c02855

  • Control of Particle Size in Flame Spray Pyrolysis of Tb–doped Y2O3 for Bio-Imaging

    2020.7

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    Language：Others   Publishing type：Research paper (scientific journal)  

    DOI： 10.3390/ma13132987

  • One-pot synthesis of (anatase/bronze-type)-TiO2/carbon dot polymorphic structures and their photocatalytic activity for H2 generation

    Sovann khan

    Applied Surface Science   2020.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.apsusc.2020.146650

  • Investigation of the Synergistic Effect of Sonolysis and Photocatalysis of Titanium Dioxide for Organic Dye Degradation

    Yunseok Choi, Daein Lee, Sungje Hong, Sovann Khan, Burak Darya, Jae-Young Lee, Jaewon Chung, So-Hye Cho

    Catalysts   10 ( 5 )   500 - 500   2020.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.3390/catal10050500

  • Luminescent silica films prepared using perhydropolysilazane and Mn-doped ZnS nanophosphors Reviewed

    Sovann Khan, Hak-Young Ahn, Joon Soo Han, Byeong-Kwon Ju, Seung Yong Lee, Ho Seong Jang, Ji Young Byun, So-Hye Cho

    Applied Surface Science   511   145441 - 145441   2020.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.apsusc.2020.145441

  • Mapping Point Defects of Brookite TiO2 for Photocatalytic Activity Beyond Anatase and P25

    Sovann khan

    The Journal of Physical Chemistry C   2020.5

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.jpcc.0c02091

  • Ultraviolet to visible down conversion of SiO2–Ce3+, Tb3+ nanospheres-poly-EVA films for solar cell application Reviewed

    576   2020.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    Despite the many advantages which the conventional crystalline silicon solar cells (c-Si) have over other forms of renewable energy sources, they still have major drawbacks (energy loss) limiting their performance. One of the main reasons for energy loss is the ineffective utilization of short wavelength photons, especially within the UV region. The efficiency of the c-Si solar cell device can be improved by depositing the phosphor nanoparticle on top of the devise to capture and covert the UV photons from sunlight to visible or near infraded photons by a downcoversion process. Therefore, we have prepared and investigated luminescent and optical properties of downconverting nanophosphors composed of SiO2 co-doped with Ce and Tb. The dominant photoluminescence emission peak was observed at 544 nm and it was attributed to the D-5(4) -> F-7(5) transition of Tb3+. The phosphors synthesized were incorporated into poly poly-ethylene vinyl acetate (poly-EVA) films which were later overlaid on a commercial silicon solar cell to and its photocurrent efficiency were measured. The phosphor films recorded a significantly good transmittance (>= 76%) and also displayed a UV absorption capacity compared to that of the plain poly-EVA film. Some of the films made from different concentrations of Ce and Tb, recorded an increase in the photocurrent efficiency when deposited on the solar cell, while other compositions recorded marginal decreases compared to that of the plain EVA film.

    DOI： 10.1016/j.physb.2019.411711

  • ZnS nanoparticles as new additive for polyethersulfone membrane in humic acid filtration Reviewed

    Jing Guo, Sovann Khan, So-Hye Cho, Jeonghwan Kim

    Journal of Industrial and Engineering Chemistry   79   71 - 78   2019.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.jiec.2019.05.015

  • Preparation and immobilization of zinc sulfide (ZnS) nanoparticles on polyvinylidene fluoride pellets for photocatalytic degradation of methylene blue in wastewater Reviewed

    Jing Guo, Sovann Khan, So-Hye Cho, Jeonghwan Kim

    Applied Surface Science   473   425 - 432   2019.4

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.apsusc.2018.12.103

  • Flame-synthesized Y2O3:Tb3+ nanocrystals as spectral converting materials Reviewed

    Sovann khan

    Journal of Nanoparticle Research   20 ( 9 )   2018.9

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s11051-018-4347-7

  • Flame synthesized Y2O3:Tb3+–Yb3+ phosphors as spectral convertors for solar cells Reviewed

    44 ( 8 )   4619 - 4632   2018.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    Near-infrared (NIR) quantum cutting phosphors serve as a potential material for fabricating photovoltaic spectral convertors. In many cases, quantum cutting phosphors are obtained via a wet chemical method coupled with a post-annealing treatment-a very costly process. In this report, we used continuous flame spray pyrolysis (FSP) for fabricating Y2O3:Tb3+-Yb3+ quantum-cutting phosphors without any post-treatment. Based on characterizations by scanning electron microscopy, transmission electron microscopy, and X-ray diffraction, we found that as-synthesized Y2O3:Tb3+-Yb3+ phosphors exhibit hollow and shell-like micro-structures composed of highly crystalline and pure cubic-phase nanoparticles (< 50 nm). Photoluminescence studies of the phosphors revealed that NIR emissions appeared with the introduction of Yb to Y2O3:Tb3+. Phosphor size was successfully controlled by managing the concentration of the metal precursor solution for FSP. The Y2O3:Tb3+-Yb3+ phosphors were then embedded into transparent poly-ethylene-co-vinyl acetate (EVA) film to form a spectral convertor. The composite films of Y2O3:Tb3+-Yb3+ phosphors and poly-EVA were found to be highly transparent in the visible range (> 500 nm), making them suitable as spectral photovoltaic convertors.

    DOI： 10.1007/s11164-018-3270-y

  • Unexpected Roles of Interstitially Doped Lithium in Blue and Green Light Emitting Y2O3:Bi3+: A Combined Experimental and Computational Study Reviewed International journal

    Sovann khan

    Inorganic Chemistry   56 ( 20 )   12139 - 12147   2017.10

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.inorgchem.7b01353

  • Synergetic control of band gap and structural transformation for optimizing TiO2 photocatalysts Reviewed

    Heechae Choi, Sovann Khan, Junghyun Choi, Duong T. T. Dinh, Seung Yong Lee, Ungyu Paik, So-Hye Cho, Seungchul Kim

    APPLIED CATALYSIS B-ENVIRONMENTAL   210   513 - 521   2017.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.apcatb.2017.04.020

  • Near-infrared quantum cutting in Tb3+ and Yb3+-doped Y2O3 nanophosphors Reviewed

    Abhijit P. Jadhav, Sovann Khan, Sun Jin Kim, Seung Yong Lee, Jong-Ku Park, So-Hye Cho

    RESEARCH ON CHEMICAL INTERMEDIATES   43 ( 6 )   3463 - 3471   2017.6

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1007/s11164-016-2427-9

  • Defect engineering toward strong photocatalysis of Nb-doped anatase TiO2: Computational predictions and experimental verifications Reviewed

    Sovann Khan, Haneol Cho, Donghun Kim, Sang Soo Han, Kyu Hwan Lee, So-Hye Cho, Taeseup Song, Heechae Choi

    APPLIED CATALYSIS B-ENVIRONMENTAL   206   520 - 530   2017.6

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.apcatb.2017.01.039

  • ZnS Nano-Spheres Formed by the Aggregation of Small Crystallites and Their Photocatalytic Degradation of Eosin B Reviewed

    Sovann Khan, Joon Soo Han, Seung Yong Lee, So-Hye Cho

    CHINESE JOURNAL OF CHEMISTRY   35 ( 2 )   159 - 164   2017.2

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/cjoc.201600725

  • Enhanced photoluminescence due to Bi3+ -> Eu3+ energy transfer and re-precipitation of RE doped homogeneous sized Y2O3 nanophosphors Reviewed

    Abhijit P. Jadhav, Thuy Duong Thi Dinh, Sovann Khan, Seung Yong Lee, Jong-Ku Park, Sung Wook Park, Ju Hyun Oh, Byung Kee Moon, Kiwan Jang, Soung Soo Yi, Jung Hwan Kim, So-Hye Cho, Jung Hyun Jeong

    MATERIALS RESEARCH BULLETIN   83   186 - 192   2016.11

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.materresbull.2016.06.016

  • New route for synthesis of well-crystallized sodium-doped yttrium hydroxide and its universality in formation of rare earth hydroxides Reviewed

    Sovann Khan, Seung Yong Lee, Jong-Ku Park, Sohye Cho

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   252   2016.8

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  • Humic acid fouling in a submerged photocatalytic membrane reactor with binary TiO2-ZrO2 particles Reviewed

    Sovann Khan, Jeonghwan Kim, Arcadio Sotto, Bart Van der Bruggen

    JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY   21   779 - 786   2015.1

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.jiec.2014.04.012

  • Roles of an oxygen Frenkel pair in the photoluminescence of Bi3+-doped Y2O3: computational predictions and experimental verifications Reviewed

    Heechae Choi, So Hye Cho, Sovann Khan, Kwang-Ryeol Lee, Seungchul Kim

    JOURNAL OF MATERIALS CHEMISTRY C   2 ( 30 )   6017 - 6024   2014.8

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/c4tc00438h

  • Roles of an oxygen Frenkel pair in the photoluminescence of Bi 3+-doped Y<inf>2</inf>O<inf>3</inf>: Computational predictions and experimental verifications Reviewed

    Heechae Choi, So Hye Cho, Sovann Khan, Kwang Ryeol Lee, Seungchul Kim

    Journal of Materials Chemistry C   2 ( 30 )   6017 - 6024   2014.8

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    Language：Others   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/c4tc00438h

  • Characteristics of NOM filtration in submerged, photocatalytic membrane system integrated with composite TiO2/ZrO2 nanoparticles Reviewed

    Jeonghwan Kim, Sovann Khan

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   243   2012.3

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