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Silicon Nanowires Show Improved Performance as Photocathode for Catalyzed Carbon Dioxide Photofixation


  • The project is supported in part by the NSF (grant number DMR 1055762) to D.W. and the NIGMS (grant number R01GM08758) to K.L.T. D.W. and K.L.T. are both Alfred P. Sloan Fellows.


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Wired: With silicon as a photocathode and [Ni(bpy)2] as a catalyst, visible light-powered CO2 photofixation is made possible (see picture). Owing to their multifaceted surfaces, silicon nanowires show a significantly better performance compared to planar Si. The shape of a nanowire is indeed an appealing materials choice for high-efficiency, low-cost solar energy conversion applications.