A Molecular Cobalt Hydrogen Evolution Catalyst Showing High Activity and Outstanding Tolerance to CO and O2

Jia Wei Wang, Kosei Yamauchi, Hai Hua Huang, Jia Kai Sun, Zhi Mei Luo, Di Chang Zhong, Tong Bu Lu, Ken Sakai

研究成果: ジャーナルへの寄稿記事

抄録

There is a demand to develop molecular catalysts promoting the hydrogen evolution reaction (HER) with a high catalytic rate and a high tolerance to various inhibitors, such as CO and O2. Herein we report a cobalt catalyst with a penta-dentate macrocyclic ligand (1-Co), which exhibits a fast catalytic rate (TOF=2210 s−1) in aqueous pH 7.0 phosphate buffer solution, in which proton transfer from a dihydrogen phosphate anion (H2PO4) plays a key role in catalytic enhancement. The electrocatalyst exhibits a high tolerance to inhibitors, displaying over 90 % retention of its activity under either CO or air atmosphere. Its high tolerance to CO is concluded to arise from the kinetically labile character of undesirable CO-bound species due to the geometrical frustration posed by the ligand, which prevents an ideal trigonal bipyramid being established.

元の言語英語
ページ(範囲)10923-10927
ページ数5
ジャーナルAngewandte Chemie - International Edition
58
発行部数32
DOI
出版物ステータス出版済み - 8 5 2019

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Carbon Monoxide
Cobalt
Hydrogen
Catalysts
Phosphates
Ligands
Proton transfer
Electrocatalysts
Negative ions
Anions
Buffers
Air

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

これを引用

A Molecular Cobalt Hydrogen Evolution Catalyst Showing High Activity and Outstanding Tolerance to CO and O2. / Wang, Jia Wei; Yamauchi, Kosei; Huang, Hai Hua; Sun, Jia Kai; Luo, Zhi Mei; Zhong, Di Chang; Lu, Tong Bu; Sakai, Ken.

:: Angewandte Chemie - International Edition, 巻 58, 番号 32, 05.08.2019, p. 10923-10927.

研究成果: ジャーナルへの寄稿記事

Wang, Jia Wei ; Yamauchi, Kosei ; Huang, Hai Hua ; Sun, Jia Kai ; Luo, Zhi Mei ; Zhong, Di Chang ; Lu, Tong Bu ; Sakai, Ken. / A Molecular Cobalt Hydrogen Evolution Catalyst Showing High Activity and Outstanding Tolerance to CO and O2. :: Angewandte Chemie - International Edition. 2019 ; 巻 58, 番号 32. pp. 10923-10927.
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