串联
催化作用
光催化
辐照
材料科学
乙烯
化学工程
化学
光化学
纳米技术
有机化学
复合材料
物理
核物理学
工程类
作者
Yifan Yan,Hongzhi Wang,Xinze Bi,Yuezhu Zhao,Wenhang Wang,Mingbo Wu
摘要
Abstract It is highly desired yet challenging to strategically steer CO 2 reduction reaction (CO 2 RR) toward ethylene (C 2 H 4 ) with high activity under visible light irradiation. The key to achieving this goal is increasing the local *CO concentration on the catalyst surface and promoting the C‐C coupling progress. Here, we prepare tandem catalysts of CuSe/Au X to realize the photocatalytic reduction of CO 2 to C 2 H 4 with high activity. Under light irradiation, the loaded Au NPs are used to activate and transfer CO 2 to *CO. The generated *CO intermediate could migrate to the surface of CuSe and cause the C‐C coupling process. Moreover, the theoretical calculation results show that the transport process of *CO from Au NPs to CuSe is spontaneous, which plays a critical role in guaranteeing the high concentration of *CO intermediate on the surface of CuSe. This work not only reveals the effect of tandem catalysis on CO 2 RR to C2 products but also explores the most suitable tandem catalyst to produce C 2 H 4 with high activity by adjusting the loading amounts of Au NPs. Thus, it provides a way to adjust the Cu‐based catalyst used in the production of C2 products by photocatalytic CO 2 RR, which may attract extensive attention in the field.
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