Photogeneration of hydrogen from water by a robust dye-sensitized photocathode

B. Shan; A. K. Das; S. Marquard; B. H. Farnum; D. Wang; R. M. Bullock; T. J. Meyer

doi:10.1039/c6ee02903e

Photogeneration of hydrogen from water by a robust dye-sensitized photocathode

B. Shan, A. K. Das, S. Marquard, B. H. Farnum, D. Wang, R. M. Bullock, T. J. Meyer

Pacific Northwest National Laboratory

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

43 Citations (Scopus)

Abstract

We report here on a photocathode with a "donor-dye-catalyst" assembly on a macro-mesoporous metal oxide for water reduction. The photoelectrocatalytic performance of the photocathode under mild conditions, with a photocurrent density of -56 μA cm^-2 and a Faradaic yield of 53%, is superior relative to other reported photocathodes with surface attached molecular catalysts. Detailed electron transfer analyses show that the successful application of this photocathode originates mainly from the slow back electron transfer following light excitation. The results also demonstrate that addition of the long-chain assembly to the macro-mesoporous electrode surface plays a fundamental role in providing sufficient catalyst for water reduction.

Original language	English
Pages (from-to)	3693-3697
Number of pages	5
Journal	Energy and Environmental Science
Volume	9
Issue number	12
DOIs	https://doi.org/10.1039/c6ee02903e
Publication status	Published - Dec 2016

ASJC Scopus subject areas

Environmental Chemistry
Renewable Energy, Sustainability and the Environment
Nuclear Energy and Engineering
Pollution

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title = "Photogeneration of hydrogen from water by a robust dye-sensitized photocathode",

abstract = "We report here on a photocathode with a {"}donor-dye-catalyst{"} assembly on a macro-mesoporous metal oxide for water reduction. The photoelectrocatalytic performance of the photocathode under mild conditions, with a photocurrent density of -56 μA cm-2 and a Faradaic yield of 53%, is superior relative to other reported photocathodes with surface attached molecular catalysts. Detailed electron transfer analyses show that the successful application of this photocathode originates mainly from the slow back electron transfer following light excitation. The results also demonstrate that addition of the long-chain assembly to the macro-mesoporous electrode surface plays a fundamental role in providing sufficient catalyst for water reduction.",

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note = "Funding Information: The research on photoelectrocatalytic water reduction and dynamic electron transfer analysis was primarily supported by the University of North Carolina Energy Frontier Research Center (UNC EFRC): Center for Solar Fuels, an Energy Frontier Research Center supported by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, under Award DE-SC0001011 (B. S., S. M., D. W.). Synthesis of the nickel catalyst (A. K. D.) was supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences. Pacific Northwest National Laboratory is operated by Battelle for the U.S. Department of Energy. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2016.",

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AU - Shan, B.

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AU - Wang, D.

AU - Bullock, R. M.

AU - Meyer, T. J.

N1 - Funding Information: The research on photoelectrocatalytic water reduction and dynamic electron transfer analysis was primarily supported by the University of North Carolina Energy Frontier Research Center (UNC EFRC): Center for Solar Fuels, an Energy Frontier Research Center supported by the U.S. Department of Energy (DOE), Office of Science, Office of Basic Energy Sciences, under Award DE-SC0001011 (B. S., S. M., D. W.). Synthesis of the nickel catalyst (A. K. D.) was supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences. Pacific Northwest National Laboratory is operated by Battelle for the U.S. Department of Energy. Publisher Copyright: © The Royal Society of Chemistry 2016.

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N2 - We report here on a photocathode with a "donor-dye-catalyst" assembly on a macro-mesoporous metal oxide for water reduction. The photoelectrocatalytic performance of the photocathode under mild conditions, with a photocurrent density of -56 μA cm-2 and a Faradaic yield of 53%, is superior relative to other reported photocathodes with surface attached molecular catalysts. Detailed electron transfer analyses show that the successful application of this photocathode originates mainly from the slow back electron transfer following light excitation. The results also demonstrate that addition of the long-chain assembly to the macro-mesoporous electrode surface plays a fundamental role in providing sufficient catalyst for water reduction.

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Photogeneration of hydrogen from water by a robust dye-sensitized photocathode

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