▎ 摘　　要

NOVELTY - Preparing composite microsphere structure zinc oxide/copper(II) oxide/graphene oxide (ZnO/CuO/GO) heterojunction photocatalyst comprises (1) mixing zinc salt, copper salt, carbon source, graphene aqueous solution, and water to obtain a mixed solution, and subjecting the mixed solution to a hydrothermal reaction to obtain a reactant, (2) separating solid-liquid of the reactant to obtain a solid reactant, and washing and drying of the solid reactant to obtain a precursor, and (3) calcining the precursor to obtain a composite microsphere structure ZnO/CuO/GO heterojunction photocatalyst. USE - The photocatalyst is useful in degrading pollutants (claimed). ADVANTAGE - The photocatalyst solves the technical problems of low photocatalytic performance and low pollutant degradation ability of the existing semiconductor photocatalyst. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for composite microsphere structure ZnO/CuO/GO heterojunction photocatalyst prepared by the above preparation method.