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Issue 3, 2015
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Platinum(ii)–porphyrin as a sensitizer for visible-light driven water oxidation in neutral phosphate buffer

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Abstract

A water-soluble Pt(II)–porphyrin with a high potential for one-electron oxidation (∼1.42 V vs. NHE) proves very suitable for visible-light driven water oxidation in neutral phosphate buffer solution in combination with a variety of water oxidation catalysts (WOCs). Two homogeneous WOCs (iridium(N-heterocyclic carbene) and Co4O4–cubane complexes) and two heterogeneous WOCs (IrOx·nH2O and Co3O4 nanoparticles) were investigated, with sodium persulfate (Na2S2O8) as a sacrificial electron acceptor. Under neutral buffer conditions, the Pt(II)–porphyrin shows higher stability than the commonly used photosensitizer [Ru(bpy)3]2+, and therefore represents a good alternative photosensitizer to be used in the evaluation of light driven WOCs.

Graphical abstract: Platinum(ii)–porphyrin as a sensitizer for visible-light driven water oxidation in neutral phosphate buffer

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Supplementary files

Article information


Submitted
18 Oct 2014
Accepted
02 Jan 2015
First published
02 Jan 2015

This article is Open Access

Energy Environ. Sci., 2015,8, 975-982
Article type
Paper
Author version available

Platinum(II)–porphyrin as a sensitizer for visible-light driven water oxidation in neutral phosphate buffer

H. Chen, D. G. H. Hetterscheid, R. M. Williams, J. I. van der Vlugt, J. N. H. Reek and A. M. Brouwer, Energy Environ. Sci., 2015, 8, 975
DOI: 10.1039/C4EE03302G

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