Isolated Cu Sites in CdS Hollow Nanocubes with Doping-Location-Dependent Performance for Photocatalytic CO 2 Reduction

Doping engineering has enabled the construction of homogeneous and abundant atomic-level catalytic sites for photocatalytic CO2 reduction with improved selectivity for the target product. However, little is known about the effect of the spatial position of the heteroatoms on the photocatalytic activity of the semiconductors toward CO2 reduction. Herein, uniform Cu doping into the bulk phase of hollow CdS cubes (HCC) and Cu doping onto the surface of HCC, denoted as Cu/HCC and HCC@Cu, respectively, are prepared by tuning the introduction order of Cu sources. Experimental analysis shows that the introduction of Cu by both methods can promote the separation and migration of photoinduced charge carriers in CdS.…

• NN
  National Natural Science Foundation of China

  Awards: 51977071, 51802040, 52071137, 21802020, 52272295
• NS
  Natural Science Foundation of Hunan Province

  Awards: 2020JJ3004, 2020JJ4192
• SA
  Science and Technology Program of Hunan Province

  Awards: 2021RC3066, 2021RC3067
• FR
  Fundamental Research Funds for the Central Universities