Preparation and photocatalytic properties of Bi2WO6/g-C3N4

Bi2WO6/g-C3N4, a heterojunction photocatalyst with excellent photocatalytic performance, was synthesized by hydrothermal method. The addtion of Bi2WO6 reduced the band width of g-C3N4 with lower electron-hole complex efficiency. When the mass ratio of Bi2WO6 is 10%, the photocatalytic efficiency of the heterojunction is 80.61%, which is 4 times and 1.94 times higher than that of g-C3N4 and Bi2WO6. The capture agent test showed that the active groups of the photocatalytic degradation process were all mainly ·OH, with h+ as the minor active group. The catalytic activity remained relatively stable after four cycles of experiments.