▎ 摘　　要

NOVELTY - Photocatalytic reduction and oxidation of graphene by quadrangular zinc oxide includes adding deionized water to oxidized graphite; dispersing the solution by ultrasonic wave; separating out large particles; obtaining brown oxidized graphene water solution; uniformly dispersing quadrangular zinc oxide to oxidized graphene water solution; magnetically stirring the mixed solution; filling nitrogen; using UV ray to irradiate the solution; washing with hydrochloric acid; filtering the solution to remove quadrangular zinc oxide; washing the product; and separating and drying the product. USE - Photocatalytic reduction and oxidation of graphene by quadrangular zinc oxide (claimed). ADVANTAGE - The method is simple; has low material cost; adds no harmful reagent; provides reduced product with large area and performance, which is the same as graphite; and recovers electrical conductivity. DETAILED DESCRIPTION - Photocatalytic reduction and oxidation of graphene by quadrangular zinc oxide comprises: (A) weighing oxidized graphite, adding deionized water, dispersing the solution by ultrasonic wave, separating out large particles, and obtaining brown oxidized graphene water solution; and (B) weighing quadrangular zinc oxide; uniformly dispersing the quadrangular zinc oxide to the oxidized graphene water solution, where mass ratio of quadrangular zinc oxide to oxidized graphene is 1:1-3:1; magnetically stirring the mixed solution; filling nitrogen; using UV ray to irradiate the solution for 2-5 hours, where after reacting, the solution color becomes black; washing with hydrochloric acid (HCl); filtering the solution to remove quadrangular zinc oxide; using deionized water and ethanol to wash the product; and separating and drying the product.