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Electrochemical Water-Splitting Based on Hypochlorite Oxidation

Journal article
Authors Katerina Minhova Macounova
Nina Simic
Elisabet Ahlberg
Petr Krtil
Published in Journal of the American Chemical Society
Volume 137
Issue 23
Pages 7262-7265
ISSN 0002-7863
Publication year 2015
Published at Department of Chemistry and Molecular Biology
Pages 7262-7265
Language en
Links dx.doi.org/10.1021/jacs.5b02087
Keywords Electrocatalysis, radical mechanism, water splitting, DEMS
Subject categories Electrochemistry, Physical Chemistry

Abstract

Effective catalytic water-splitting can be electrochemically triggered in an alkaline solution of sodium hypochlorite. Hypochlorite oxidation on polycrystalline platinum yields ClO· radicals, which initiate a radical-assisted water-splitting, yielding oxygen, hydrogen peroxide, and protons. The efficiency of the O2 production corresponds to about two electrons per molecule of the produced O2 and is controlled primarily by the hypochlorite concentration and pH.

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