Progress in synthesis method of micro/ nano-structured graphitic carbon nitride

The micro/nano-structured graphitic carbon nitride has been widely used in photocatalytic splitting water to hydrogen/oxygen， photocatalytic degradation of organic pollutants， photocatalytic organic synthesis， sensors and biomedicine， and has become one of the non-metallic polymer semiconductor photocatalysts hot issues. The latest progress in the synthesis of micro/nano-structured g-C3N4， including microwave heating， molten salt， template， exfoliation and supramolecular self-assembly method， was summarized. In particular， the advantages of supramolecular self-assembly technology in the regulation and preparation efficiency of micro/nano-structured g-C3N4 was reviewed. Furthermore， the effect of raw material system and technological process on the morphology and structure of g-C3N4 by supramolecular self-assembly technology was discussed. Finally， the practical challenges relevant to fine control and directional design of g-C3N4 micro/nano-structure by supramolecular self-assembly technology were summarized. The future directions of the technique， such as the interdisciplinary research among different synthesis methods， the combination with molecular dynamics simulations， and the establishment of abundant raw material system and process parameter database，are prospected.