Synthesis and photocatalytic activity of g-C3N4/BiVO4/CNTs composites

g-C3N4 was prepared, and samples of different contents of BiVO4, CNTs and g-C3N4 were doped, characterized, and ternary composites were successfully prepared. RhB was selected as the pollutant to test the photocatalytic performance of the ternary composite (GCBC) sample. The photocatalytic activity was analyzed by degrading RhB under visible light (lambda > 550 nm), combined the kinetic equation of the degradation reaction and the capture of free radicals for research. And elucidated the mechanism of GCBC active species capture and photocatalytic degradation.