Confined Growth of Silver–Copper Janus Nanostructures with {100} Facets for Highly Selective Tandem Electrocatalytic Carbon Dioxide Reduction

Abstract Electrocatalytic carbon dioxide reduction reaction (CO 2 RR) holds significant potential to promote carbon neutrality. However, the selectivity toward multicarbon products in CO 2 RR is still too low to meet practical applications. Here the authors report the delicate synthesis of three kinds of Ag–Cu Janus nanostructures with {100} facets (JNS‐100) for highly selective tandem electrocatalytic reduction of CO 2 to multicarbon products. By controlling the surfactant and reduction kinetics of Cu precursor, the confined growth of Cu with {100} facets on one of the six equal faces of Ag nanocubes is realized. Compared with Cu nanocubes, Ag 65 –Cu 35 JNS‐100 demonstrates much superior selectivity for both…

• CU
  City University of Hong Kong

  Awards: 9680301, 7005512, 7005600, 22005258, 4930977, 9610480
• NN
  National Natural Science Foundation of China

  Awards: 21771156, N_PolyU502/21, 22175148, 22005258
• HK
  Hong Kong Polytechnic University

  Award: 1-ZE2V
• CU
  Chinese University of Hong Kong

  Awards: 4930977, 21771156, 22175148, 22005258
• NS
  National Supercomputing Centre Singapore