Photocatalytic water oxidation using manganese compounds immobilized in Nafion polymer membranes

Karin J. Young; Yunlong Gao; Gary W. Brudvig

doi:10.1071/CH11178

Photocatalytic water oxidation using manganese compounds immobilized in Nafion polymer membranes

Karin J. Young, Yunlong Gao, Gary W. Brudvig

Yale University

Research output: Contribution to journal › Article › peer-review

22 Citations (Scopus)

Abstract

Robust water oxidation catalysts using earth abundant metals are required as part of an overall scheme to convert sunlight into fuels. Here, we report the immobilization of [Mn₄IVO₅(terpy)₄(H ₂O)₂](ClO₄)₆ (terpy=2, 2′;6′,2′′-terpyridine), [Mn₄O ₆(tacn)₄](ClO₄)₄ (tacn=1,4,7-triazacyclononane), and manganese dioxide nanoparticles in Nafion on fluorine-doped tin oxide conducting glass electrodes. The electrodes are illuminated with white light in the presence of an applied potential and the resulting photocurrent is assigned to the oxidation of solvent water. Photodecomposition of the tetrameric complexes results in a material that is more active for light-driven electrooxidation of water. The reactivity, wavelength dependence, and stability of the compounds in Nafion under illumination are discussed.

Original language	English
Pages (from-to)	1219-1226
Number of pages	8
Journal	Australian Journal of Chemistry
Volume	64
Issue number	9
DOIs	https://doi.org/10.1071/CH11178
Publication status	Published - 2011

ASJC Scopus subject areas

Chemistry(all)

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abstract = "Robust water oxidation catalysts using earth abundant metals are required as part of an overall scheme to convert sunlight into fuels. Here, we report the immobilization of [Mn4IVO5(terpy)4(H 2O)2](ClO4)6 (terpy=2, 2′;6′,2′′-terpyridine), [Mn4O 6(tacn)4](ClO4)4 (tacn=1,4,7-triazacyclononane), and manganese dioxide nanoparticles in Nafion on fluorine-doped tin oxide conducting glass electrodes. The electrodes are illuminated with white light in the presence of an applied potential and the resulting photocurrent is assigned to the oxidation of solvent water. Photodecomposition of the tetrameric complexes results in a material that is more active for light-driven electrooxidation of water. The reactivity, wavelength dependence, and stability of the compounds in Nafion under illumination are discussed.",

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