Modification Strategies of g-C3N4-Based Materials for Enhanced Photoelectrocatalytic Degradation of Pollutants: A Review
Yijie Zhang, Peng Lian, Xinyu Hao, Liqiang Zhang, Lihua Yang, Jiang Li, Kaiyou Zhang, Lei Liao, Aimiao Qin
Abstract
Graphite carbon nitride (g-C3N4) is a low band gap non-metallic polymer semiconductor that has broad application prospects and is an ideal material for absorbing visible light, as g-C3N4 materials have strong oxidation properties and are easy to modify. The structure formation of g-C3N4-based materials makes a series of photocatalytic synthesis reactions possible and improves photocatalytic reaction activity. In this paper, the development history, structures, and performance of g-C3N4 are briefly introduced, and the modification strategies of g-C3N4 are summarized to improve its photocatalytic and photoelectric catalytic properties via doping, heterojunction construction, etc. The light absorption and utilization of the catalysts are also analyzed in terms of light source conditions, and the application of g-C3N4 and its modified materials in photocatalysis and photocatalytic degradation is reviewed.