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Hitoshi Fukumitsu

Hokkaido University

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Featured researches published by Hitoshi Fukumitsu.

Advanced Materials | 2012

Molecular Catalysts Confined on and Within Molecular Layers Formed on a Si(111) Surface with Direct Si–C Bonds

Takuya Masuda; Hitoshi Fukumitsu; Satoru Takakusagi; Wang-Jae Chun; Toshihiro Kondo; Kiyotaka Asakura; Kohei Uosaki

Two examples of confined molecular catalysts are presented. PtCl(4) (2-) complexes are attached to a thiol-terminated monolayer by ligand exchange of Cl(-) with a thiolate group and incorporated in a multilayer of viologen moieties by ion exchange. All Cl(-) ligands are replaced by OH(-) or H(2) O before HER takes place. Ex situ and in situ XAFS measurements confirm that the Pt complexes accelerate HER without being converted into Pt particles.

Journal of Physical Chemistry C | 2012

Role of Cerium Oxide in the Enhancement of Activity for the Oxygen Reduction Reaction at Pt–CeOx Nanocomposite Electrocatalyst : An in Situ Electrochemical X-ray Absorption Fine Structure Study

Takuya Masuda; Hitoshi Fukumitsu; Keisuke Fugane; Hirotaka Togasaki; Daiju Matsumura; Kazuhisa Tamura; Yasuo Nishihata; Hideki Yoshikawa; Keisuke Kobayashi; Toshiyuki Mori; Kohei Uosaki

Electrochimica Acta | 2010

Resonance surface X-ray scattering technique to determine the structure of electrodeposited Pt ultrathin layers on Au(1 1 1) surface

Toshihiro Kondo; Masayo Shibata; Naoko Hayashi; Hitoshi Fukumitsu; Takuya Masuda; Satoru Takakusagi; Kohei Uosaki

Journal of Physical Chemistry C | 2013

Structure of Pt(111)/Ionomer Membrane Interface and Its Bias-Induced Change in Membrane Electrode Assembly

Takuya Masuda; Hitoshi Fukumitsu; Toshihiro Kondo; Hideo Naohara; Kazuhisa Tamura; Osami Sakata; Kohei Uosaki

Journal of Physical Chemistry C | 2012

Electrochemical Layer-by-Layer Deposition of Pseudomorphic Pt Layers on Au(111) Electrode Surface Confirmed by Electrochemical and In Situ Resonance Surface X-ray Scattering Measurements

Masayo Shibata; Naoko Hayashi; Takara Sakurai; Ayumi Kurokawa; Hitoshi Fukumitsu; Takuya Masuda; Kohei Uosaki; Toshihiro Kondo

Chemistry Letters | 2010

Novel Method for Construction of a Metal-Organic Monolayer-Si Structure Utilizing Thiol-terminated Monolayer Covalently Bonded to the Surface through Si-C Bonds

Hitoshi Fukumitsu; Takuya Masuda; Deyu Qu; Yusuke Waki; Hidenori Noguchi; Katsuaki Shimazu; Kohei Uosaki

Journal of Physical Chemistry C | 2016

Various Active Metal Species Incorporated within Molecular Layers on Si(111) Electrodes for Hydrogen Evolution and CO2 Reduction Reactions

Takuya Masuda; Yu Sun; Hitoshi Fukumitsu; Hiromitsu Uehara; Satoru Takakusagi; Wang-Jae Chun; Toshihiro Kondo; Kiyotaka Asakura; Kohei Uosaki

Physical Chemistry Chemical Physics | 2014

Construction of a metal–organic monolayer–semiconductor junction on a hydrogen-terminated Si(111) surface via Si–C covalent linkage and its electrical properties

Kohei Uosaki; Hitoshi Fukumitsu; Takuya Masuda; D. Qu

225th ECS Meeting (May 11-15, 2014) | 2014

XAFS Study on the Structures of Catalysts for Photoelectrochemical Hydrogen Evolution and CO 2 Reduction Prepared By the Incorporation of Metal Complexes within Viologen Multi-Layers Formed on Si(111) Surfaces

Takuya Masuda; Yu Sun; Yuki Morita; Hitoshi Fukumitsu; Hiromitsu Uehara; Satoru Takakusagi; Wang-Jae Chun; Toshihiro Kondo; Kiyotaka Asakura; Kohei Uosaki

Meeting Abstracts | 2012

Important Role of Cerium Oxide in Oxygen Reduction Reaction at Pt-CeOx Nanocomposite Electrocatalyst Studied by in situ Electrochemical XAFS

Takuya Masuda; Hitoshi Fukumitsu; Keisuke Fugane; Hirotaka Togasaki; Daiju Matsumura; Kazuhisa Tamura; Yasuo Nishihata; Hideki Yoshikawa; Keisuke Kobayashi; Toshiyuki Mori; Kohei Uosaki

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Collaboration

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Kohei Uosaki

National Institute for Materials Science

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Takuya Masuda

National Institute for Materials Science

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Toshihiro Kondo

Ochanomizu University

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Satoru Takakusagi

Hokkaido University

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Kiyotaka Asakura

University of Tokyo

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Masayo Shibata

Ochanomizu University

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Wang-Jae Chun

International Christian University

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Naoko Hayashi

Ochanomizu University

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Kazuhisa Tamura

Japan Atomic Energy Agency

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Takara Sakurai

Ochanomizu University

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