“…It also has the advantage of high stability, simple preparation, and being nonhazardous to the environment. 2,3 So many methods have been explored to synthesize g-C 3 N 4 , such as thermal pyrolysis, 4,5 a supramolecular pre-assembly strategy, 6,7 a microwave-assisted heating strategy, 8 a template-assisted strategy, [9][10][11] a molten salt strategy, [12][13][14][15] a co-catalyst loading, 16 and so on.…”