Graphite phase carbon nitride(g?C3N4), as an environmentally benign semiconductor material, has good application prospects in photocatalysis. However, the disadvantages of pure g?C3N4 such as small specific surface area and difficult separation of photogenerated carriers will limit its photocatalytic performance, which will restrict its large?scale application.From the synthetic methods and modification strategies, the research progress of g?C3N4 photocatalysts by researchers in recent years is reviewed, and the development of g?C3N4 photocatalysts in the fields of degradation of pollutants in water treatment, H2 and H2O2 production is summarised, and it can be found that the performance of the modified g?C3N4 photocatalysts has been greatly improved.Finally,the development direction of g?C3N4 photocatalyst is prospected.
As a classic non?metallic semiconductor photocatalyst, graphite phase carbon nitride material (g?C3N4) has attracted widespread attention in recent years due to its stable physical and chemical properties, reasonable band structure, low cost, easy availability, safety, and pollution?free advantages. It has good application and development prospects in the fields of environmental protection, purification and energy catalysis. However, the utilization of g?C3N4 in studies is significantly hampered by its tiny specific surface area, limited absorption of visible light, and high rate of recombination of photogenerated electrons and holes. The basic structure, characteristics and main modifications of g?C3N4 are reviewed, covering modification means such as elemental doping, morphological modulation, noble metal deposition and the practical applications of g?C3N4 in recent years at home and abroad.
The photocatalysis technology becomes more and more mature. As a non?metallic visible light responsive catalyst, carbon nitride (g?C3N4) has attracted wide attention in the field of solar energy conversion and environmental protection due to its adjustable band gap structure, high physicochemical stability and environmental friendliness. It has become a new research hotspot. However, g?C3N4 also has some defects, such as small specific surface area, recombination of photogenerated electron and holes, and low utilization rate of light energy,which limit the application of g?C3N4 in practice.Therefore,the review focus on the development and research results of g?C3N4,and summarizes g?C3N4 from the aspects of development process,synthesis method, performance application,modification and optimization,and predicts how to further improve the performance of g?C3N4 to cope with the future development of the world.