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: Contribution to journalArticle

11 被引用数 (Scopus)

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.

本文言語英語
ページ(範囲)10923-10927
ページ数5
ジャーナルAngewandte Chemie - International Edition
58
32
DOI
出版ステータス出版済み - 8 5 2019

All Science Journal Classification (ASJC) codes

  • Catalysis
  • Chemistry(all)

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