ZnO/g-C_3N_4纳米复合材料光催化降解污染物研究进展

Research Progress in ZnO/g-C_3N_4 Nanocomposites Applied to Photocatalytic Degradation of Pollutants

ZnO/g-C_3N_4纳米复合材料可促进电子–空穴的有效分离,有较大的比表面积,有利于污染物和自由基的扩散和传质,电子可从g-C_3N_4的导带转移到ZnO的导带上,而空穴可从ZnO的价带转移到g-C_3N_4的价带上,从而提高复合材料在可见光下的光催化性能,因此ZnO/g-C_3N_4纳米复合材料在光催化领域中被广泛研究。

g-C3N4/ZnO nano-composite materials possessed large specific surface areaandcould promote effectively the separation of electrons and holes.Itwas beneficial to the diffusion and mass transfer of pollutants and free radicals. Electrons could directly be transferred from the g-C3N4 conduction band toZnO,holes couldbe transferred from theZnOvalence band tog-C3N4, resulting inimproving the photocatalyticpreformance of composite materials under visible light. Therefore, ZnO/g-C3N4nano-composite materials had widely been researched in photocatalysis field.