Kinetics and mechanisms of catalytic water oxidation

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The kinetics and mechanisms of thermal and photochemical oxidation of water with homogeneous and heterogeneous catalysts, including conversion from homogeneous to heterogeneous catalysts in the course of water oxidation, are discussed in this review article. Molecular and homogeneous catalysts have the advantage to clarify the catalytic mechanisms by detecting active intermediates in catalytic water oxidation. On the other hand, heterogeneous nanoparticle catalysts have advantages for practical applications due to high catalytic activity, robustness and easier separation of catalysts by filtration as compared with molecular homogeneous precursors. Ligand oxidation of homogeneous catalysts sometimes results in the dissociation of ligands to form nanoparticles, which act as much more efficient catalysts for water oxidation. Since it is quite difficult to identify active intermediates on the heterogeneous catalyst surface, the mechanism of water oxidation has hardly been clarified under heterogeneous catalytic conditions. This review focuses on the kinetics and mechanisms of catalytic water oxidation with homogeneous catalysts, which may be converted to heterogeneous nanoparticle catalysts depending on various reaction conditions.

Original languageEnglish
Pages (from-to)779-798
Number of pages20
JournalDalton Transactions
Issue number3
StatePublished - 2019

Bibliographical note

Funding Information:
The authors gratefully acknowledge the contributions of their collaborators and co-workers in the cited references and financial support from a JSPS grant (Grant Number 16H02268 to S.F.) from MEXT, a SENTAN project of JST, the NRF through CRI (NRF-2012R1A3A2048842 to W. N.), GRL (NRF-2010-00353 to W. N.) and Basic Science Research Program (2017R1D1A1-B03029982 to Y. M. L. and 2017R1D1A1B03032615 to S. F.).

Publisher Copyright:
© The Royal Society of Chemistry.


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