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An exceptionally stable octacobalt-cluster-based metal-organic framework for enhanced water oxidation catalysis.

ABSTRACT: Extensive efforts have been devoted to developing efficient and durable catalysts for water oxidation. Herein, we report a highly stable metal-organic framework that shows high catalytic activity and durability for electrically driven (an overpotential of 430 mV at 10 mA cm-2 in neutral aqueous solution) and photodriven (a turnover frequency of 16 s-1 and 12?000 cycles) water oxidation, representing the best catalyst for water oxidation reported to date. Computational simulation and isotope tracing experiments showed that the ?4-OH group of the {Co8(?4-OH)6} unit participates in the water oxidation reaction to offer an oxygen vacancy site with near-optimal OH- adsorption energy.

SUBMITTER: Huang NY

PROVIDER: S-EPMC6977550 | biostudies-literature | 2019 Nov

REPOSITORIES: biostudies-literature

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An exceptionally stable octacobalt-cluster-based metal-organic framework for enhanced water oxidation catalysis.

Huang Ning-Yu NY Shen Jian-Qiang JQ Ye Zi-Ming ZM Zhang Wei-Xiong WX Liao Pei-Qin PQ Chen Xiao-Ming XM

Chemical science 20190910 42

Extensive efforts have been devoted to developing efficient and durable catalysts for water oxidation. Herein, we report a highly stable metal-organic framework that shows high catalytic activity and durability for electrically driven (an overpotential of 430 mV at 10 mA cm<sup>-2</sup> in neutral aqueous solution) and photodriven (a turnover frequency of 16 s<sup>-1</sup> and 12 000 cycles) water oxidation, representing the best catalyst for water oxidation reported to date. Computational simul ...[more]

PMID: 32015809

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