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.

中文翻译：

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金等离激元诱导的极性氧化物表面上甲烷与乙烷的光催化脱氢偶联†

这项工作显示了室温下甲烷与乙烷在太阳能驱动下的脱氢偶联作用。在Au / ZnO多孔纳米片（NSs）的极性表面上实现了0.08％的太阳能到C ₂ H _6的能量转换效率，其中甲烷C–H键被垂直于极性的局部电场极化并解离{001}面，最后通过自由基偶联途径转化为乙烷和氢。机理研究表明，Au-等离子体激元引起的共振能量转移调节电荷载流子的能量，从而触发化学计量转换。热电子将质子还原为H ₂，这是甲烷偶联的决定速率的步骤。