“…15,16 However, pure g-C 3 N 4 is usually restricted by weak light absorption above 460 nm, a low separation rate of photo-generated electrons (e À ) and holes (h + ), and low electrical conductivity. [17][18][19] In addition, bulk g-C 3 N 4 obtained through the direct thermal polymerization process generally yields relatively low specific areas and fewer active sites, which leads to poor performance in catalytic processes. 20 To address these issues, various strategies, such as coupling with other semiconductors, designing appropriate structures, and elemental doping, have been proposed to enhance the photocatalytic performance of g-C 3 N 4 .…”