Tuning the Selectivity of Liquid Products of CO2RR by Cu–Ag Alloying

• DOI: 10.1021/acsami.2c00593
• Publication Date: 2022-02-25T03:49:10Z
• Authors: Yanzhi Xu; Changli Li; Yequan Xiao; Chenghui Wu; Yanming Li; Yanbo Li; Juguang Han; Qinghua Liu; Jingfu He
• Keywords: Stoichiometry

The combination of Cu and Ag presents a promising way to steer the CO2 reduction products through regulating surface active sites. However, difficulty in forming CuAg alloy with controllable atomic ratio impedes in-depth understanding structure-activity relationship catalysts. Herein, we use E-beam evaporation synthesize series films uniform distribution stoichiometry reveal real reaction mechanism on for electrochemical process. Compared Cu, Cu1-xAgx (x = 0.05-0.2) showed an apparent suppression HCOOH between C2 liquid (e.g., ethanol acetate) C1 product (HCOOH) is also increased. Operando synchrotron radiation Fourier transform infrared spectroscopy results suggest that introduction into phase can significantly strengthen absorbed *CO *OCCO intermediates suppress O-C-O intermediates. This research provides reliable inhibit generation enhance production during CO2RR guideline future manipulation copper catalysts by alloying.