Photochemical oxidation mechanism of microcystin-RR by p-n heterojunction Ag/Ag2O-BiVO4

The Ag/Ag2O-BiVO4 composite photocatalyst with heterojunction structure exhibit perfect photoactivity for the degradation of microcystin MC-RR under visible light irradiation, relative to those of BiVO4, Ag-BiVO4 and Ag2O-BiVO4. The high activity steps from the charge separation due to the presence of heterojunction.