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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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Publication details

The article was received on 18 Oct 2014, accepted on 02 Jan 2015 and first published on 02 Jan 2015


Article type: Paper
DOI: 10.1039/C4EE03302G
Citation: Energy Environ. Sci., 2015,8, 975-982
  • Open access: Creative Commons BY-NC license
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    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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