Potential- and Buffer-Dependent Catalyst Decomposition during Nickel-Based Water Oxidation Catalysis.

ABSTRACT: The production of hydrogen by water electrolysis benefits from the development of water oxidation catalysts. This development process can be aided by the postulation of design rules for catalytic systems. The analysis of the reactivity of molecular complexes can be complicated by their decomposition under catalytic conditions into nanoparticles that may also be active. Such a misinterpretation can lead to incorrect design rules. In this study, the nickel-based water oxidation catalyst [Ni^II (meso-L)](ClO₄ )₂ , which was previously thought to operate as a molecular catalyst, is found to decompose to form a NiO_x layer in a pH 7.0 phosphate buffer under prolonged catalytic conditions, as indicated by controlled potential electrolysis, electrochemica

SUBMITTER: Hessels J 

PROVIDER: S-EPMC7702101 | biostudies-literature | 2020 Nov

REPOSITORIES: biostudies-literature