2025/06/30 更新

お知らせ

 

写真a

コバヤシ　ヒロカズ
小林 浩和
KOBAYASHI HIROKAZU
所属
ネガティブエミッションテクノロジー研究センター ユビキタスCO2研究部門 准教授
理学府 化学専攻（併任）
職名
准教授
連絡先
メールアドレス
電話番号
0928026453
ホームページ
外部リンク

学位

  • 博士 (理学)

研究テーマ・研究キーワード

  • 研究テーマ： 二酸化炭素から高効率・高選択的に化学原料に変換する触媒開発

    研究キーワード： 二酸化炭素の変換

    研究期間： 2022年4月 - 2027年3月

受賞

  • 公益信託 分子科学研究奨励森野基金

    2019年9月  

  • International Association of Advanced Materials Scientist Medal for the year 2016

    2016年8月  

  • 文部科学大臣表彰若手科学者賞

    2016年4月   文部科学省  

  • 日本化学会 第65回進歩賞

    2015年3月   日本化学会  

論文

  • Enhanced Hydrogen Supply to Atomically Dispersed Copper Sites through Close Cooperation with Oxygen Vacancies in Black TiO<sub>2</sub> to Promote CH<sub>4</sub> Production in CO<sub>2</sub> Electrolysis

    Anzai, A; Fukushima, M; Rocabado, DSR; Ishimoto, T; Sugiyama, T; Ohtani, B; Kobayashi, H; Liu, MH; Donoshita, M; Noguchi, TG; Maurya, SK; Kato, K; Sit, CY; Kenis, PJA; Yamauchi, M

    ACS APPLIED MATERIALS & INTERFACES   17 ( 15 )   22665 - 22676   2025年4月   （ ISSN:1944-8244 eISSN:1944-8252 ）

    　詳細を見る

    記述言語：英語   出版者・発行元：ACS Applied Materials and Interfaces  

    CO<inf>2</inf> electroreduction (eCO<inf>2</inf>R) holds promise as an environmentally friendly approach to reducing greenhouse gas emissions. Cu is a representative catalyst with high eCO<inf>2</inf>R activity. However, its selectivity for CH<inf>4</inf> synthesis is still insufficient due to the slow eight-electron transfer to a single carbon, the predominance of C-C coupling reactions toward C<inf>2+</inf> products on Cu, as well as occurrence of the hydrogen evolution reaction. Here, for high CH<inf>4</inf> selectivity, we demonstrate a genuine hydrogen supply to atomically dispersed Cu sites (AD-Cu) via the cooperative function of oxygen vacancy (V<inf>O</inf>) formed on defective black anatase TiO<inf>2</inf> (Cu-TiO<inf>2</inf>-H<inf>2</inf>), that is prepared by exposing Cu-doped TiO<inf>2</inf> (Cu-TiO<inf>2</inf>) to hydrogen gas. Cu-TiO<inf>2</inf>-H<inf>2</inf> exhibited a remarkable Faradaic efficiency for CH<inf>4</inf> production of 63% and a partial current density of −120 mA cm<sup>-2</sup>. The catalytic mechanism for the high CH<inf>4</inf> selectivity was elucidated using a variety of spectroscopies, such as electron spin resonance, reversed double-beam photoacoustic spectroscopy (RDB-PAS) and in situ Raman measurements, with the support of quantum chemical calculations. In situ Raman measurements revealed that Cu-TiO<inf>2</inf>-H<inf>2</inf> greatly accelerates proton consumption for the hydrogenation of *CO intermediates and that the surface pH on Cu-TiO<inf>2</inf>-H<inf>2</inf> is sufficiently high to stabilize *CHO intermediates, key species for CH<inf>4</inf> formation. DFT calculations support the stability of the intermediates during the process of forming *CHO. All our results suggest that V<inf>O</inf> contiguous to AD-Cu on Cu-TiO<inf>2</inf>-H<inf>2</inf> promotes water dissociation and smoothly supplies hydrogen to AD-Cu on Cu-TiO<inf>2</inf>-H<inf>2</inf>, thus facilitating CH<inf>4</inf> formation in eCO<inf>2</inf>R.

    DOI： 10.1021/acsami.5c00484

    Web of Science

    Scopus

    PubMed

  • Integration of Metal Nanoparticles and Metal–Organic Frameworks for Composite Catalysts

    H. Kobayashi, H. Kitagawa

    Coordination Chemistry Discovery   ( 2 )   102 - 119   2024年12月

  • Modulating Electronic States of Cu in Metal-Organic Frameworks for Emerging Controllable CH<sub>4</sub>/C<sub>2</sub>H<sub>4</sub> Selectivity in CO<sub>2</sub> Electroreduction

    Sun, MX; Cheng, JM; Anzai, A; Kobayashi, H; Yamauchi, M

    ADVANCED SCIENCE   11 ( 34 )   e2404931   2024年9月   （ eISSN:2198-3844 ）

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    記述言語：英語   出版者・発行元：Advanced Science  

    The intensive study of electrochemical CO<inf>2</inf> reduction reaction (CO<inf>2</inf>RR) has resulted in numerous highly selective catalysts, however, most of these still exhibit uncontrollable selectivity. Here, it is reported for the first time the controllable CH<inf>4</inf>/C<inf>2</inf>H<inf>4</inf> selectivity by modulating the electronic states of Cu incorporated in metal-organic frameworks with different functional ligands, achieving a Faradaic efficiency of 58% for CH<inf>4</inf> on Cu-incorporated UiO-66-H (Ce) composite catalysts, Cu/UiO-66-H (Ce) and that of 44% for C<inf>2</inf>H<inf>4</inf> on Cu/UiO-66-F (Ce). In situ measurements of Raman and X-ray absorption spectra revealed that the electron-withdrawing ability of the ligand side group controls the product selectivity on MOFs through the modulation of the electronic states of Cu. This work opens new prospects for the development of MOFs as a platform for the tailored tuning of selectivity in CO<inf>2</inf>RR.

    DOI： 10.1002/advs.202404931

    Web of Science

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    PubMed

  • Defect-Driven Optimization of TiO<sub>2</sub>-Based Electrodes for High-Efficiency Electrochemical 1,4-NADH Generation

    Besisa, NHA; Yoon, KS; Noguchi, TG; Kobayashi, H; Yamauchi, M

    ACS SUSTAINABLE CHEMISTRY & ENGINEERING   12 ( 26 )   9874 - 9881   2024年6月   （ ISSN:2168-0485 ）

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    出版者・発行元：ACS Sustainable Chemistry and Engineering  

    The electrochemical reduction of nicotinamide adenine dinucleotide (NAD) using water as a hydrogen source is a promising strategy for the efficient and environmentally friendly production of the active enzymatic cofactor 1,4-NADH, which is a key for the further application of enzymatic systems in various industrial fields. However, the efficient regeneration of 1,4-NADH (NADH-reg) remains a major challenge. The rate-limiting step in the electrochemical conversion of the oxidized NAD is the second electron transfer to an NAD radical, which is formed by the reduction of NAD<sup>+</sup>, at a large overpotential, whereas the other side reactions proceed readily. To surmount this obstacle and promote NADH-reg, we used Ni nanoparticle-loaded TiO<inf>2</inf> on a Ti electrode (Ni-TOT) containing a sufficient number of defects as active sites, which are formed at 300 °C in the H<inf>2</inf> atmosphere. Ni-TOT facilitated the formation of enzymatically active 1,4-NADH with a superior yield and significantly reduced overpotential compared to those on untreated TOT. We found that hydrogen spillover promotes the formation of active sites on Ni-TOT. This study highlights the potential of engineered defect-enriched electrodes as a means to advance NADH-reg.

    DOI： 10.1021/acssuschemeng.4c02313

    Web of Science

    Scopus

  • Dynamics of Linkers in Metal-Organic Framework Glasses

    Khudozhitkov, AE; Ogiwara, N; Donoshita, M; Kobayashi, H; Stepanov, AG; Kolokolov, DI; Kitagawa, H

    JOURNAL OF THE AMERICAN CHEMICAL SOCIETY   146 ( 19 )   12950 - 12957   2024年5月   （ ISSN:0002-7863 eISSN:1520-5126 ）

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    記述言語：英語   出版者・発行元：Journal of the American Chemical Society  

    Metal-organic framework (MOF) glasses have emerged as a new class of organic-inorganic hybrid glass materials. Considerable efforts have been devoted to unraveling the macroscopic dynamics of MOF glasses by studying their rheological behavior; however, their microscopic dynamics remain unclear. In this work, we studied the effect of vitrification on linker dynamics in ZIF-62 by solid-state 2H nuclear magnetic resonance (NMR) spectroscopy. 2H NMR relaxation analysis provided a detailed picture of the mobility of the ZIF-62 linkers, including local restricted librations and a large-amplitude twist; these details were verified by molecular dynamics. A comparison of ZIF-62 crystals and glasses revealed that vitrification does not drastically affect the fast individual flipping motions with large-amplitude twists, whereas it facilitates slow cooperative large-amplitude twist motions with a decrease in the activation barrier. These observations support the findings of previous studies, indicating that glassy ZIF-62 retains permanent porosity and that short-range disorder exists in the alignment of ligands because of distortion of the coordination angle.

    DOI： 10.1021/jacs.3c13156

    Web of Science

    Scopus

    PubMed

  • Unraveling the Enhanced N<sub>2</sub> Activity on CuNi Alloy Catalysts for Ammonia Production: Experiments, DFT, and Statistical Analysis

    Agharezaei, P; Tomohiro, NG; Kobayashi, H; Schlenz, H; Yamauchi, M; Ghuman, KK

    JOURNAL OF PHYSICAL CHEMISTRY C   128 ( 9 )   3703 - 3717   2024年2月   （ ISSN:1932-7447 eISSN:1932-7455 ）

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    出版者・発行元：Journal of Physical Chemistry C  

    One of the main challenges in designing catalysts for ammonia synthesis is to create active sites on the surface of the catalyst that prefers to reduce the strong N<inf>2</inf> molecule despite its highly stable structure. Binary alloys have been demonstrated as potential ammonia synthesis catalysts in the literature. However, for binary alloys to be commercially viable, one needs to improve their catalytic activity for N<inf>2</inf> reduction by strategically manipulating the several unique active sites present on their surface. Herein, by using computational tools, we created five different compositions of Cu<inf>x</inf>Ni<inf>1-x</inf> (0.5 ≤ x ≤ 0.9) alloys via special quasi-random structure (SQS) and genetic algorithm (GA). The alloy with about 50% of Cu and 50% of Ni is predicted to have the highest catalytic activity based on the shift of the d-band center toward the Fermi level. We then synthesized MgO-supported Cu<inf>0.5</inf>Ni<inf>0.5</inf> nanoparticles and compared their activity for ammonia synthesis with that of Ni/MgO and Cu/MgO. It was found that the MgO-supported Cu<inf>0.5</inf>Ni<inf>0.5</inf> alloy possesses 21 times higher activity than Cu/MgO and 3 times higher than Ni/MgO for ammonia synthesis, confirming the computational results. To demonstrate the impact of alloying on the catalytic activity, we further investigated all the possible unique sites on the surface of the Cu<inf>0.5</inf>Ni<inf>0.5</inf> alloy for nitrogen reduction reaction (NRR) via density functional theory (DFT). The investigation of the 96 unique active sites on the Cu<inf>0.5</inf>Ni<inf>0.5</inf> surface demonstrated that the position and concentration of Ni atoms near each investigated adsorption site have a linear correlation with the adsorption energy of the N<inf>2</inf>. Along with the structural and electronic properties of the active sites modified by Ni, orientation of the N<inf>2</inf> molecule also plays an important role in determining the activity of the CuNi catalyst. These findings not only explained the notable increase in the activity of CuNi catalysts compared to the pure metals for NH<inf>3</inf> synthesis but also offered critical insights required to tailor the specific surface environment of CuNi catalysts for NRR. This knowledge can serve as a foundation for further developments in designing binary alloy catalysts for sustainable ammonia synthesis.

    DOI： 10.1021/acs.jpcc.3c06417

    Web of Science

    Scopus

  • CuxRu1-x catalysts for carbon neutralization with CH4 or CO production

    Huang, B; Liu, YH; Kobayashi, H; Tan, Z; Yamamoto, T; Toriyama, T; Matsumura, S; Kawaguchi, S; Kubota, Y; Zheng, H; Kitagawa, H

    CHEM CATALYSIS   3 ( 8 )   2023年8月   （ ISSN:2667-1093 ）

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    出版者・発行元：Chem Catalysis  

    CO2 methanation is a promising large-scale carbon neutralization process for industrial exhaust gases. However, the moderate activities of catalysts to date have always limited large-scale practical applications of CO2 methanation. Solid solutions with abundant active sites and adjustable electronic states are good candidates for achieving higher activities. Here, we developed a carbon neutralization platform system and synthesized CuxRu1-x solid solutions for CO2 methanation by coreduction methodology. Among them, Cu0.05Ru0.95 showed the best CO2 methanation activity, outperforming the best monometallic catalyst Ru. The origin of excellent activity was attributed to the rapid CO2 asymmetric dissociation on Cu-Ru dual-atom sites. Furthermore, anomalous electron transfer from Ru to Cu was found, resulting in high electron density in Cu-atom sites, which mainly induced the rapid CO2 dissociation for CuxRu1-x solid solutions. In addition, the Cu0.7Ru0.3 solid solution had high intrinsic activity for CO2 hydrogenation and 100% CO selectivity.

    DOI： 10.1016/j.checat.2023.100705

    Web of Science

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  • Hydrogen absorption and diffusion behaviors in cube-shaped palladium nanoparticles revealed by ambient-pressure X-ray photoelectron spectroscopy

    Tang J., Seo O., Rocabado D.S.R., Koitaya T., Yamamoto S., Nanba Y., Song C., Kim J., Yoshigoe A., Koyama M., Dekura S., Kobayashi H., Kitagawa H., Sakata O., Matsuda I., Yoshinobu J.

    Applied Surface Science   587   2022年6月   （ ISSN:01694332 ）

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    出版者・発行元：Applied Surface Science  

    The hydrogen absorption and diffusion processes in cube-shaped palladium (Pd) nanoparticles (NPs) were studied by the combination of ambient-pressure X-ray photoelectron spectroscopy (AP-XPS) and density functional theory (DFT) calculations. A size dependence of the subsurface hydrogen absorption was observed. More hydrogen atoms were absorbed in the subsurface of the smaller-sized Pd NPs owing to the enhancement of the diffusivity of H atoms from the surface into the subsurface rather than the adsorption or absorption rates at the initial stages. This results from the weakened Pd-H bond caused by surface disordering of Pd NPs with the reduction of the size of the particles. Furthermore, we discuss the H absorption sites in the bulk by comparing the relative Pd 3d core-level binding energy shifts of the Pd atoms obtained from the AP-XPS results and the theoretical calculations. The octahedral (O) sites are shown to be more favorable than the tetrahedral (T) sites for hydrogen occupation by comparing the experimental results and theoretical calculations. Finally, we proposed an interaction model between hydrogen and the Pd NPs during H2 absorption and diffusion to provide new insights into the hydrogen absorption process.

    DOI： 10.1016/j.apsusc.2022.152797

    Scopus

  • Singular behaviour of atomic ordering in Pt-Co nanocubes starting from core-shell configurations 査読 国際誌

    K. Aso, H. Kobayashi, S. Yoshimaru, X. Q. Tran, M. Yamauchi, S. Matsumura, Y. Oshima

    Nanoscale   14 ( 27 )   9842 - 9848   2022年6月

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    記述言語：日本語   掲載種別：研究論文（学術雑誌）  

    DOI： 10.1039/d2nr01982e

  • Enhancing Hydrogen Storage Capacity of Pd Nanoparticles by Sandwiching between Inorganic Nanosheets

    Ament K., Kobayashi H., Kusada K., Breu J., Kitagawa H.

    Zeitschrift fur Anorganische und Allgemeine Chemie   648 ( 10 )   2022年5月   （ ISSN:00442313 ）

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    出版者・発行元：Zeitschrift fur Anorganische und Allgemeine Chemie  

    H2 is regarded to play a crucial role in the transition from a fossil fuel-based energy economy towards an environmentally friendly one. However, storage of H2 is still challenging, but palladium (Pd) based materials show exciting properties. Therefore, nanoparticulate Pd has been intensely studied for hydrogen storage in the past years. Here, we stabilize Pd nanoparticles by intercalation between inorganic nanosheets of hectorite (NaHec). Compared to nanoparticles stabilized by the polymer polyvinylpyrrolidone (PVP), the H2 storage capacity was found to be 86 % higher for identical Pd nanoparticles being intercalated between nanosheets. We attribute this remarkably enhanced H2 storage capacity to the partial oxidation of Pd, as evidenced by X-ray photoelectron spectroscopy (XPS). The higher amount of holes in the 4d band leads to a higher amount of H2 that can be absorbed when Pd is stabilized between the nanosheets of hectorite compared to the PVP stabilized nanoparticles.

    DOI： 10.1002/zaac.202100370

    Scopus

  • Origin of the Catalytic Activity of Face-centered-cubic Ruthenium Nanoparticles Determined from an Atomic-scale Structure 査読 国際誌

    R. Kumara, O. Sakata, S. Kohara, A. Yang, C. Song, K. Kusada, H. Kobayashi, H. Kitagawa

    Phys. Chem. Chem. Phys.   ( 18 )   30622 - 30629   2016年10月

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    記述言語：英語   掲載種別：研究論文（学術雑誌）  

    DOI： https://doi.org/10.1039/C6CP04088H

  • STEM Study of Bimetallic Pd-Ru Nanoparticles 査読

    T. Yamamoto, K. Kusada, K. Sato, S. Yoshioka, H. Kobayashi, K. Nagaoka, H. Kitagawa, S. Matsumura

    Microscopy   ( 64 )   97   2015年10月

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  • Dual Lewis Acidic/Basic Pd0.5Ru0.5-PVP Alloyed Nanoparticle: Outstanding Catalytic Activity and Selectivity in Suzuki-Miyaura Cross-Coupling Reaction 査読

    Md. Kutubi, K. Sato, K. Wada, T. Yamamoto, S. Matsumura, K. Kusada, H. Kobayashi, H. Kitagawa, K, Nagaoka

    ChemCatChem   ( 7 )   3887 - 3894   2015年10月

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  • Glass Transition and Positional Ordering of Hydrogen in Bulk and Nano-Crystalline Palladium 査読

    H. Akiba, H. Kobayashi, H. Kitagawa, M. Kofu, O. Yamamuro

    Phys. Rev. B   ( 92 )   064202   2015年8月

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  • Hybrid Materials of Ni NP@MOF Prepared by a Simple Synthetic Method

    M. Mukoyoshi, H. Kobayashi, K. Kusada, M. Hayashi, T. Yamada, M. Maesato, Jared M. Taylor, Y. Kubota, K. Kato, M. Takata, T. Yamamoto, S. Matsumura, H. Kitagawa

    Chem. Commun.   ( 54 )   12463 - 12466   2015年6月

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  • Creation of Novel Solid-solution Alloy Nanoparticles on the Basis of Density-of-states Engineering by Interelement Fusion 招待 査読

    H. Kobayashi, K. Kusada, H. Kitagawa

    Acc. Chem. Res.   ( 48 )   1551 - 1559   2015年5月

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    記述言語：英語  

    DOI： https://doi.org/10.1021/ar500413e

  • The Valence Band Structure of AgxRh1-x Alloy Nanoparticles 査読

    A. Yang, O. Sakata, K. Kusada, T. Yayama, H. Yoshikawa, T. Ishimoto, M. Koyama, H. Kobayashi, H. Kitagawa

    Appl. Phys. Lett.   ( 105 )   153109 - 153113   2014年10月

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  • Encapsulation of Bimetallic Nanoparticles into a Metal-Organic Framework: Preparation and Microstructure Characterization of Pd/Au@ZIF-8 査読

    C. Rösler, D. Esken, C. Wiktor, H. Kobayashi, T. Yamamoto, S. Matsumura, H. Kitagawa, R. A. Fischer

    Eur. J. Inorg. Chem.   ( 32 )   5514 - 5521   2014年9月

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  • Ordered bcc CuPd Nanoalloy Synthesised from the Thermal Decomposition of Pd Nanoparticles Covered with a Metal-organic Framework under Hydrogen Gas 査読

    G. Li, H. Kobayashi, K. Kusada, J. M. Taylor, Y. Kubota, K. Kato, M. Takata, T. Yamamoto, S. Matsumura, H. Kitagawa

    Chem. Commun.   ( 50 )   13750 - 13753   2014年9月

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  • Shape-Dependent Hydrogen-Storage Properties in Pd Nanocrystals: Which Does Hydrogen Prefer, Octahedron (111) or Cube (100)? 査読

    G. Li, H. Kobayashi, S. Dekura, R. Ikeda, Y. Kubota, K. Kato, M. Takata, T. Yamamoto, S. Toh, S. Matsumura, H. Kitagawa

    J. Am. Chem. Soc.   ( 136 )   10222 - 10225   2014年7月

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  • Hydrogen Storage in Pd Nanocrystals Covered with a Metal–organic Framework 査読

    G. Li, H. Kobayashi, J. M. Taylor, R. Ikeda, Y. Kubota, K. Kato, M. Takata, T. Yamamoto, S. Toh, S. Matsumura, H. Kitagawa

    Nat. Mater.   ( 13 )   802 - 806   2014年7月

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  • Facile Synthesis of Small MgO Nanoparticles/Metal-Organic Framework Hybrid Material 査読

    B. Huang, H. Kobayashi, H. Kitagawa

    Chem. Lett.   ( 43 )   1459 - 1460   2014年5月

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  • First in situ NMR Observation of Hydrogen Adsorbed inside Cu3(btc)2 at Ambient Temperature and Pressure 査読

    S. Dekura, H. Kobayashi, G. Li, R. Ikeda, Y. Kubota, M. Takata and H. Kitagawa

    Chem. Lett.   ( 43 )   1363 - 1364   2014年5月

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  • Facile Liquid-Phase Synthesis and Optical Properties of Small Silver Iodide Quantum Dots 査読

    T. Yamamoto, H. Kobayashi, H. Kitagawa

    Chem. Lett.   ( 43 )   1355 - 1356   2014年5月

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  • Unusual Magnetic Ordering Observed in Nanosized S = 1/2 Quantum Spin System (CH3)2NH2CuCl3 査読

    Y. Inagaki, Y. Sakamoto, H. Morodomi, T. Kawae, Y. Yoshida, T. Asano, K. Hosoi, H. Kobayashi, H. Kitagawa, Y. Ajiro, Y. Furukawa

    J. Phys. Soc. Jpn.   ( 83 )   054716 - 054721   2014年4月

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  • Solid Solution Alloy Nanoparticles of Immiscible Pd and Ru Elements Neighboring on Rh: Changeover of the Thermodynamic Behavior for Hydrogen Storage and Enhanced CO-Oxidizing Ability 査読

    K. Kusada, H. Kobayashi, R. Ikeda, Y. Kubota, M. Takata, S. Toh, T. Yamamoto, S. Matsumura, N. Sumi, K. Sato, K. N., H. Kitagawa

    J. Am. Chem. Soc   ( 136 )   1864 - 1871   2014年1月

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  • Discovery of the Face-Centered Cubic Ruthenium Nanoparticles: Facile Size-Controlled Synthesis using the Chemical Reduction Method 査読

    K. Kusada, H. Kobayashi, T. Yamamoto, S. Matsumura, N. Sumi, K. Sato, K. Nagaoka, Y. Kubota, H. Kitagawa

    J. Am. Chem. Soc.   ( 135 )   5493 - 5496   2013年4月

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  • Changeover of the Thermodynamic Behavior for Hydrogen Storage in Rh with Increasing Nanoparticle Size 査読

    K. Kusada, H. Kobayashi, R. Ikeda, H. Morita, H. Kitagawa

    Chem. Lett   ( 42 )   55 - 56   2012年12月

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  • Preparation of Sub-10 nm AgI Nanoparticles and a Study of their Phase Transition Temperature 査読

    S. Yamazaki, T. Yamada, H. Kobayashi, H. Kitagawa

    Chem. Asian J.   ( 8 )   73 - 75   2012年10月

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  • Nanosize-Induced Drastic Drop in Equilibrium Hydrogen Pressure for Hydride Formation and Structural Stabilization in Pd-Rh Solid-Solution Alloys 査読

    H. Kobayashi, H. Morita, M. Yamauchi, R. Ikeda, H. Kitagawa, Y. Kubota, K. Kato, M. Takata, S. Toh, S. Matsumura

    J. Am. Chem. Soc.   ( 134 )   12390 - 12393   2012年7月

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    担当区分：筆頭著者,　責任著者  

    DOI： https://doi.org/10.1021/ja305031y

  • Modular Design of Domain Assembly in Porous Coordination Polymer Crystals via Reactivity-Directed Crystallization Process 査読

    T, Fukushima, S, Horike, H. Kobayashi, M, Tsujimoto, S, Isoda, L M, Foo, Y, Kubota, M, Takata, S, Kitagawa

    J. Am. Chem. Soc.   ( 134 )   13341 - 13347   2012年6月

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  • Finding Hydrogen-Storage Capability in Iridium Induced by the Nanosize Effect 査読

    H. Kobayashi, M. Yamauchi, H. Kitagawa

    J. Am. Chem. Soc.   ( 134 )   6893 - 6895   2012年4月

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    担当区分：筆頭著者,　責任著者  

  • Nanosize-Induced Hydrogen Storage and Capacity Control in a Non-Hydride-Forming Element: Rhodium 査読

    H. Kobayashi,* H. Morita, M. Yamauchi, R. Ikeda, H. Kitagawa,* Y. Kubota, K. Kato, M. Takata

    J. Am. Chem. Soc.   ( 133 )   11034 - 11037   2011年7月

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    担当区分：筆頭著者,　責任著者  

    DOI： 10.1021/ja2027772

  • Hydrogen-Storage Properties of Solid-Solution Alloys of Immiscible Neighboring Elements with Pd 査読

    K. Kusada, M. Yamauchi, H. Kobayashi, H. Kitagawa, Y. Kubota

    J. Am. Chem. Soc.   ( 132 )   15896 - 15898   2010年10月

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  • Seed-mediated Synthesis of Pd-Rh Bimetallic Nanodendrites

    H. Kobayashi, B. Lim, J. Wang, P. H.C. Camargo, T. Yu, M. J. Kim, Y. Xia

    Chem. Phys. Lett.   ( 494 )   249 - 254   2010年7月

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    担当区分：筆頭著者  

    DOI： https://doi.org/10.1016/j.cplett.2010.06.009

  • New Insights into the Growth Mechanism and Surface Structure of Palladium Nanocrystals 査読 国際共著

    B. Lim, H. Kobayashi, P. H. C. Camargo, L. F. Allard, J. Liu, Y. Xia

    Nano Res.   ( 3 )   180 - 188   2010年5月

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  • Atomic-Level Pd-Pt Alloying and Largely Enhanced Hydrogen-Storage Capacity in Bimetallic Nanoparticles Reconstructed from Core/Shell Structure by a Process of Hydrogen Absorption/Desorption 査読

    H. Kobayashi, M. Yamauchi, H. Kitagawa, Y. Kubota, K. Kato, M. Takata

    J. Am. Chem. Soc.   ( 132 )   5576 - 5577   2010年4月

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    担当区分：筆頭著者  

    DOI： https://doi.org/10.1021/ja1013163

  • Synthesis of Pd−Au Bimetallic Nanocrystals via Controlled Overgrowth 査読 国際共著

    B. Lim, H. H. Kobayashi, T. Yu, J. Wang, M. J. Kim, Z.-Y. Li, M. Rycenga and Y. Xia

    J. Am. Chem. Soc.   ( 132 )   2506 - 2507   2010年2月

    　詳細を見る

  • Hydrogen Storage Mediated by Pd and Pt Nanoparticles 査読

    M. Yamauchi, H. Kobayashi, H. Kitagawa

    ( 10 )   2566 - 2576   2009年10月

    　詳細を見る

  • Atomic-Level Pd-Au Alloying and Controllable Hydrogen-Absorption Properties in Size-Controlled Nanoparticles Synthesized by Hydrogen Reduction Method 査読

    H. Kobayashi, M. Yamauchi, R. Ikeda, H. Kitagawa

    Chem. Commun.   4806 - 4808   2009年7月

    　詳細を見る

    担当区分：筆頭著者  

    DOI： https://doi.org/10.1039/B907875D

  • Hydrogen Absorption in the Core/Shell Interface of Pd/Pt Nanoparticles 査読

    H. Kobayashi, M. Yamauchi, H. Kitagawa, Y. Kubota, K. Kato, M. Takata

    J. Am. Chem. Soc   ( 130 )   1818 - 1819   2009年1月

    　詳細を見る

    担当区分：筆頭著者  

    DOI： https://doi.org/10.1021/ja078126k

  • Reversible Photomagnetic Properties of the Molecular Compound CuII(bipy)2}2{MoIV(CN)8}]•9H2O•CH3OH 査読 国際共著

    C. Mathoniére, H. Kobayashi, R. L. Bris, A. Kaïba, I. Bord

    C. R. Chim   ( 11 )   665 - 672   2008年3月

    　詳細を見る

  • On the Nature of Strong Hydrogen Atom Trapping Inside Pd Nanoparticles 査読

    H. Kobayashi, M. Yamauchi, H. Kitagawa, Y. Kubota, K. Kato, M. Takata

    J. Am. Chem. Soc.   ( 130 )   1828 - 1829   2008年1月

    　詳細を見る

    担当区分：筆頭著者  

    DOI： https://doi.org/10.1021/ja7102372

  • Electron Holography Study on Temperature Variation of Order Parameter within Circularly-Chained Nickel Nanoparticle Rings

    A. Sugawara, K. Fukunaga, M. R. Scheinfein, H. Kobayashi, H. Kitagawa, A. Tonomura

    Appl. Phys. Lett.   ( 91 )   262513 - 262515   2007年12月

    　詳細を見る

▼全件表示

書籍等出版物

  • マルチスケールで捉えるCO2電解触媒

    堂ノ下 将希、小林 浩和、山内 美穂

    化学同人  2025年5月 

  • 金属ナノ粒子とMOFが一体化した高機能触媒の開発

    小林浩和

    シーエムシー出版  2025年4月 

  • 無機ナノ触媒材料を利用したCO2電解反応の促進と膜DACシステムとの融合

    山内　美穂、小林　浩和

    The Bulletin of the Nano Science and Technology  2025年3月 

  • 金属ナノ粒子と多孔性金属錯体が一体化した複合触媒

    小林浩和、北川 宏

    錯体化学会フロンティア選書  2024年1月 

講演・口頭発表等

  • In situ Spectroscopic Investigation of Electrochemical CO2 Reduction Reaction on Cu/M Surface Alloy Nanocubes (M=Pd, Pt, Ir)

    Hirokazu Kobayashi, Takahiro Matsuu, Mahiru Umeno, Sachie Hikino, Tomohiro Noguchi, Masaki Donoshita, Miho Yamauchi

    日本化学会第105春季年会  2025年3月 

    　詳細を見る

    開催年月日： 2025年3月

  • Development of Shape Controlled Cu Based Surface Alloy Nanocrystals for Electrochemical CO2 Reduction Catalyst 招待

    Hirokazu Kobayashi, Miho Yamauchi

    第18回日台触媒シンポジウム  2025年1月 

    　詳細を見る

    開催年月日： 2025年1月

    開催地：九州大学筑紫キャンパス  

  • Development of Novel Metal Nanostructured Materials for Energy and Catalysis Applications 招待

    Hirokazu Kobayashi, Miho Yamauchi

    2024 Taiwan Japan Joint Symposium  2024年12月 

    　詳細を見る

    開催年月日： 2024年12月

    開催地：九州大学西新プラザ  

  • Development of Novel Metal Nanostructured Materials for Energy/Catalysis Application 招待

    Hirokazu Kobayashi

    2024 Silk Road International Symposium on the Cooperation and Integration of Industry, Education, Research and Application of Energy & Chemicals  2024年11月 

    　詳細を見る

    開催年月日： 2024年11月

    開催地：Xi’an Jiaotong University  

  • In situ X 線吸収分光測定による表面合金ナノ触媒の電気化学的 CO2還元特性の解明 招待

    小林浩和

    九州シンクロトロン光研究センターシンポジウム「ベイズ計測〜現状と展望〜」  2024年10月 

    　詳細を見る

    開催年月日： 2024年10月

    開催地：九州シンクロトロン光研究センター  

  • Cu/CuxM1-xコア・シェルナノキューブ(M=Pd, Pt, Ir, Ru)の作製と電気化学的CO2還元特性の系統的制御

    小林浩和、引野幸枝、山内美穂

    第 134 回触媒討論会  2024年9月 

    　詳細を見る

    開催年月日： 2024年9月

    開催地：名古屋大学 東山キャンパス  

  • Cu/CuxM1-x コア・シェルナノキューブ (M=Pd, Pt, Ir, Ru) の合成と電気化学的 CO2還元特性の系統的制御

    小林浩和、引野幸枝、山内美穂

    第22回ナノ学会  2024年5月 

    　詳細を見る

    開催年月日： 2024年5月

▼全件表示

所属学協会

  • 錯体化学会

  • 触媒学会

  • 日本化学会

委員歴

  • 錯体化学会   産学連携推進委員会  

    2024年4月   

学術貢献活動

  • 学術論文等の審査

    役割：審査・評価,　査読

    2024年1月 - 2025年3月

  • 学術論文等の審査

    役割：査読

    2023年

    　詳細を見る

    種別：査読等 

    外国語雑誌　査読論文数：5

共同研究・競争的資金等の研究課題

  • 元素固溶化技術の進化と原子配列制御によるナノ合成技術の革新と触媒機能創出

    研究課題/領域番号：25K01788  2025年4月 - 2028年3月

    科学研究費助成事業  基盤研究(B)

    小林 浩和, 堂ノ下 将希, 山本 知一

    　 詳細を見る

    資金種別：科研費

    本研究は、d-ブロック遷移金属ナノ粒子にs-ブロック金属元素、p-ブロック金属元素、希土類元素を固溶化する技術と合金表面の原子配列を精密に制御する技術を両立させた新たなナノ材料合成の基盤技術の確立を目指すものである。これにより、従来は助触媒や担持体として使用されていた元素を主触媒として活用し、従来の触媒設計の常識を覆す高機能ナノ触媒を開発する。革新的な電極触媒機能の創出を通じて、CO2の有効利用を可能にし、カーボンニュートラルの実現に向けた資源・エネルギー・環境問題の解決に貢献することが期待される。

    CiNii Research

  • 木下基礎科学研究助成事業/電気化学的二酸化炭素還元触媒の精密合成と表面反応メカニズム解明

    2024年7月 - 2026年3月

    木下基礎科学研究助成事業 

    小林 浩和

担当授業科目

  • 身の回りの化学

    2024年6月 - 2024年8月   夏学期

  • 身の回りの材料から学ぶ無機化学

    2023年10月 - 2023年12月   秋学期

FD参加状況

  • 2024年11月   役割：参加   名称：先導研FDミーティング

    主催組織：部局

その他教育活動及び特記事項

  • 2024年  その他特記事項  リサーチレビュー審査

  • 2024年  その他特記事項  リサーチプロポーザル審査

  • 2024年  その他特記事項  大学院自己推薦入試審査

  • 2024年  その他特記事項  博士入試面接審査

  • 2024年  その他特記事項  留学生特別選抜審査員