“…Traditional graphitic carbon nitrides (GCN) made by direct calcination of precursors, on the other hand, are constantly constrained by their bulky structure, uncontrolled band gap, and rapid charge carrier recombination, which limits the active species and useful catalytic sites [10] . Several strategies have recently been devised to enhance the performance of bare GCN, including doping with non-metal [11] , [12] or metal elements [13] , [14] , as well as creating composites with other semiconductors [15] , [16] . However, when exposed to people and the environment, carbon nitrides that have been doped with metals like Zn, Cu, Pb, Ni, etc.…”