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Hybrid bioinorganic approach to solar-to-chemical conversion

Nichols, Eva M. ; Gallagher, Joseph J. ; Liu, Chong ; Su, Yude ; Resasco, Joaquin ; Yu, Yi ; Sun, Yujie ; Yang, Peidong ; Chang, Michelle C. Y. ; Chang, Christopher J.

Proceedings of the National Academy of Sciences - PNAS, 2015-09, Vol.112 (37), p.11461-11466 [Periódico revisado por pares]

United States: National Academy of Sciences

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  • Título:
    Hybrid bioinorganic approach to solar-to-chemical conversion
  • Autor: Nichols, Eva M. ; Gallagher, Joseph J. ; Liu, Chong ; Su, Yude ; Resasco, Joaquin ; Yu, Yi ; Sun, Yujie ; Yang, Peidong ; Chang, Michelle C. Y. ; Chang, Christopher J.
  • Assuntos: Carbon Dioxide - chemistry ; Catalysis ; Electrolysis ; Hydrogen - chemistry ; Light ; Materials Testing ; Methane - chemistry ; Methanosarcina barkeri - metabolism ; Photosynthesis ; Physical Sciences ; Silicon - chemistry ; Solar Energy ; Sunlight ; Temperature ; Water - chemistry
  • É parte de: Proceedings of the National Academy of Sciences - PNAS, 2015-09, Vol.112 (37), p.11461-11466
  • Notas: ObjectType-Article-1
    SourceType-Scholarly Journals-1
    ObjectType-Feature-2
    content type line 23
    USDOE
    AC02-05CH11231
    Author contributions: E.M.N., J.J.G., C.L., P.Y., M.C.Y.C., and C.J.C. designed research; E.M.N., J.J.G., C.L., Y. Su, J.R., Y.Y., and Y. Sun performed research; E.M.N., J.J.G., C.L., P.Y., M.C.Y.C., and C.J.C. analyzed data; and E.M.N., J.J.G., C.L., P.Y., M.C.Y.C., and C.J.C. wrote the paper.
    Edited by Richard Eisenberg, University of Rochester, Rochester, New York, and approved July 24, 2015 (received for review April 26, 2015)
    1E.M.N. and J.J.G. contributed equally to this work.
  • Descrição: Natural photosynthesis harnesses solar energy to convert CO₂ and water to value-added chemical products for sustaining life. We present a hybrid bioinorganic approach to solar-to-chemical conversion in which sustainable electrical and/or solar input drives production of hydrogen from water splitting using biocompatible inorganic catalysts. The hydrogen is then used by living cells as a source of reducing equivalents for conversion of CO₂ to the value-added chemical product methane. Using platinum or an earth-abundant substitute, α-NiS, as biocompatible hydrogen evolution reaction (HER) electrocatalysts andMethanosarcina barkerias a biocatalyst for CO₂ fixation, we demonstrate robust and efficient electrochemical CO₂ to CH₄ conversion at up to 86% overall Faradaic efficiency for ≥7 d. Introduction of indium phosphide photocathodes and titanium dioxide photoanodes affords a fully solar-driven system for methane generation from water and CO₂, establishing that compatible inorganic and biological components can synergistically couple light-harvesting and catalytic functions for solar-to-chemical conversion.
  • Editor: United States: National Academy of Sciences
  • Idioma: Inglês
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