Heterostructure SnO2/g-C3N4 nanoparticles for enhanced visible-light Photodegradation harmful substances in sewage

Hydrothermal synthesis was used to synthesize SnCNx photocatalysts with different SnO 2 content. The SnCN4 photocatalyst has a well photocatalytic degradation efficiency for pollutants under visible light irradiation. Rising photoactivity may be related to the synergistic effect between SnO 2 and g-C 3 N 4 , which leads to an increase in visible light absorption. The interface interaction between the two components promotes effective charge transfer, thereby increasing visible light absorption. The ·O 2 ¯ and ·OH are the main reaction species in the degradation reaction and we also discussed the possible mechanism of this process. • Cubic SnO 2 ( ca. 50–100 nm) are successfully constructed by an incineration method. • An effective interfacial charge transfer between SnO 2 and g-C 3 N 4 is observed. • MDZ and RhB are quickly photodegraded completely by visible light, respectively. • SnO 2 /g-C 3 N 4 shows better photocatalytic activity than SnO 2 or g-C 3 N 4 .