Tan Wei, Cao Bo, Xiao Wenqiu, Zhang Min, Wang Shoushan, Xie Shilei, Xie Dong, Cheng Faliang, Guo Qingquan, Liu Peng
Guangdong Engineering and Technology Research Center for Advanced Nanomaterials, School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan, 523808, China.
School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, China.
Nanoscale Res Lett. 2019 Feb 21;14(1):63. doi: 10.1186/s11671-019-2892-3.
Surfactant-free and low Au loading CuO@Au and Au hollow cubes, based on electrodeposited CuO cubes as sacrificed templates, were prepared by means of a galvanic replacement reaction (GRR). The electrocatalytical performance of the as-prepared catalysts towards carbon dioxide (CO) electrochemical reduction was evaluated. The experimental results show that CuO@Au catalyst can convert CO to carbon monoxide (CO) with a maximum Faradaic efficiency (FE) of ~ 30.1% at the potential of - 1.0 V (vs. RHE) and is about twice the FE of the other catalysts at the same potential. By comparison, such electrocatalytical enhancement is attributed to the metal-oxide interface in CuO@Au.
以电沉积的氧化铜立方体作为牺牲模板，通过置换反应（GRR）制备了无表面活性剂且金负载量低的CuO@Au和金空心立方体。评估了所制备催化剂对二氧化碳（CO）电化学还原的电催化性能。实验结果表明，CuO@Au催化剂在-1.0 V（相对于可逆氢电极）的电位下可以将CO转化为一氧化碳（CO），最大法拉第效率（FE）约为30.1%，在相同电位下约为其他催化剂FE的两倍。相比之下，这种电催化增强归因于CuO@Au中的金属-氧化物界面。
