The research shows that g-C3N4 has good wear resistance, chemical stability and thermal stability, and is considered to replace graphite carbon or non-stereotyped carbon for various research fields, such as nitrogen sources, catalysts, catalyst carriers, wear coatings, electrochemical materials, membrane materials, and adsorption materials that can be used as nitrogen sources, catalysts, catalysts, wear coatings, membrane materials, and adsorption materials.