| abstract |
The invention discloses a preparation method of a Bi 3 O 4 Br/CuBi 2 O 4 bimetallic heterojunction catalyst: Bi(NO 3 ) 3 .5H 2 O, NaBr and PVP are dissolved in a mannitol aqueous solution, and the obtained The pH value of the mixed solution 1 was adjusted to 11-12, then transferred to the reactor for hydrothermal synthesis, washed with deionized water and ethanol alternately after natural cooling, and dried to obtain Bi 3 O 4 Br powder ; 4 Br powder, Cu(NO 3 ) 2 · 3H 2 O, Bi(NO 3 ) 3 · 5H 2 O and NaOH were added to the water in turn to obtain mixed solution 2, and then the mixed solution 2 was transferred to the reactor for hydrothermal treatment. Synthesis, natural cooling, washing, drying, and the obtained bimetallic heterojunction catalyst can reduce the rate of photo-generated electron-hole recombination, the preparation method is simple, and the prepared catalyst has high catalytic efficiency, and can generate a variety of active oxygen species. |