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Issue 4, 2014
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A heterogeneous water oxidation catalyst from dicobalt octacarbonyl and 1,2-bis(diphenylphosphino)ethane

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Abstract

We report the thermal synthesis of a heterogeneous Co–phosphine-based water oxidation catalyst that can be easily coated onto a variety of substrates. The system is active in neutral water and performs best with borate as electrolyte, in which the onset of catalytic current occurs at 1.51 V vs. RHE, with a Tafel slope of 68 mV per decade. Stable water oxidation is observed for over 40 hours; including in seawater with borate electrolyte, in which the catalyst is selective for water oxidation over chloride (85% Faradaic efficiency). The organic portion of the catalyst appears to play a crucial role in catalytic activity.

Graphical abstract: A heterogeneous water oxidation catalyst from dicobalt octacarbonyl and 1,2-bis(diphenylphosphino)ethane

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Article information


Submitted
19 Oct 2013
Accepted
14 Jan 2014
First published
15 Jan 2014

New J. Chem., 2014,38, 1540-1545
Article type
Paper

A heterogeneous water oxidation catalyst from dicobalt octacarbonyl and 1,2-bis(diphenylphosphino)ethane

A. J. Bloomfield, S. W. Sheehan, S. L. Collom, R. H. Crabtree and P. T. Anastas, New J. Chem., 2014, 38, 1540
DOI: 10.1039/C3NJ01298K

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