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Gold plasmon-induced photocatalytic dehydrogenative coupling of methane to ethane on polar oxide surfaces

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Abstract

This work shows the solar-driven dehydrogenative coupling of methane to ethane at room temperature. A solar-to-C2H6 energy conversion efficiency of 0.08% was achieved on the polar surface of Au/ZnO porous nanosheets (NSs), where methane C–H bonds are polarized and dissociated by the local electric field normal to the polar {001} plane, and finally converted into ethane and hydrogen through a radical coupling pathway. Mechanistic studies suggest that the Au-plasmon-induced resonance energy transfer modulates charge carrier energetics to trigger the stoichiometric conversion. Hot electrons reduce protons to H2, which is the rate-determining step of methane coupling.

Graphical abstract: Gold plasmon-induced photocatalytic dehydrogenative coupling of methane to ethane on polar oxide surfaces

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Publication details

The article was received on 13 Oct 2017, accepted on 22 Dec 2017 and first published on 22 Dec 2017


Article type: Communication
DOI: 10.1039/C7EE02951A
Citation: Energy Environ. Sci., 2018, Advance Article
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    Gold plasmon-induced photocatalytic dehydrogenative coupling of methane to ethane on polar oxide surfaces

    L. Meng, Z. Chen, Z. Ma, S. He, Y. Hou, H. Li, R. Yuan, X. Huang, X. Wang, X. Wang and J. Long, Energy Environ. Sci., 2018, Advance Article , DOI: 10.1039/C7EE02951A

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