Black bismuth tungstate photocatalyst, preparation method, and application

摘要

A preparation method for a black bismuth tungstate photocatalyst. Dielectric barrier discharge is used to generate plasma under different atmospheres so as to treat white bismuth tungstate to obtain a black bismuth tungstate photocatalyst. A bismuth elementary substance is obtained by means of reduction on the surface of bismuth tungstate by means of plasma treatment. Separation between photo-generated holes and electrons is promoted; furthermore, the light absorption range is widened and the photocatalytic CO2 reduction capability is improved.