Crystalline carbon nitride for photocatalytic phenol degradation: Effect of precursor and salt melt amounts

摘要: Development of visible-light-active photocatalyst is an important approach to utilize solar energy in the future. The attempts improve crystallinity have been focus research. Recently, use potassium chloride-lithium chloride (KCl-LiCl) salt melt has reported increase carbon nitride. In this work, precursor and amounts were varied study properties photocatalytic activity crystalline nitride for phenol degradation. When amount was too low (1 g), no product obtained due decomposition precursor. it high (4 g), showed characters amorphous CN. Optical also that when 3–4 g, incomplete condensation process occurred defects formed excessive washing. specific surface area decreased with from 2 4. (2.5 g), CN could not be obtained. However, increased 7.5 g, impurities avoided. Longer time multiple washing processes required order remove impurities, which certainly affected crystallinity. Photocatalytic test on sample prepared using optimum (2 g) (5 g), would large area.