Construction of hollow Bi2MoO6@g-C3N4 core–shell microspheres for effective photooxidation degradation

The composite microspheres of Bi 2 MoO 6 @g-C 3 N 4 with the hollow structure were synthesized by the template method and hydrothermal method. The characterization and analysis of the experimental results showed that compared with the single component, when the content of g-C 3 N 4 in the composite was 1%, it had excellent light absorption ability and the kinetic constant of photodegradation was 0.0209 min −1 which was 3.87 and 6.53 times higher than that of g-C 3 N 4 and Bi 2 MoO 6 , respectively, greatly improving the photocatalytic performance. The improved photocatalytic performance is attributed to the construction of the hollow sphere structure and its composite forming a heterojunction, which effectively promotes electron–hole separation and transfer. The composite photocatalyst exhibited good photochemical stability in cycling tests under simulated sunlight irradiation.