Precursor-modified strategy to synthesize thin porous amino-rich graphitic carbon nitride with enhanced photocatalytic degradation of RhB and hydrogen evolution performances

The photocatalytic activity of carbon nitride (CN) materials is mainly limited to small specific surface areas, solar absorption, and low separation mobility photoinduced carriers. In this study, we developed a precursor-modified strategy for the synthesis graphitic CN with highly efficient performance. precursor dicyandiamide reformed by different acids undergoes basic structural change transforms into diverse new precursors. thin porous amino-rich HNO3-CN (5H-CN) was calcined dicyandiamidine nitrate, formed concentrated nitric acid modified dicyandiamide, presented best degradation rate RhB, more than 34 times that bulk CN. Moreover, hydrogen evolution 5H-CN significantly improved. TG-DSC-FTIR analyses indicated distinguishing thermal polymerization process led its structure, theoretical calculations revealed negative conduction band potential attributed structure. It anticipated structure position play important roles in improvement This study demonstrates modification promising project induce polycondensation enhanced