期刊
ENERGY & ENVIRONMENTAL SCIENCE
卷 11, 期 2, 页码 294-298出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c7ee02951a
关键词
-
资金
- NSFC [21773031, 21643009]
- State Key Laboratory of Photocatalysis on Energy and Environment [SKLPEE-2017A01, SKLPEE-2017B02]
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 H-2, which is the rate-determining step of methane coupling.
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