▎ 摘　　要

NOVELTY - The preparation method of zinc vanadate-modified graphene carbon triazotetrazole composite photocatalyst involves (1) weighing 5 g dicyandiamide in a crucible, and calcining into a tube furnace to obtain graphene-like carbon trioxide, (2) weighing a certain amount of graphene-like carbon trioxide, and dissolving in 50 mL water, (3) weighing proper amount of zinc sulfate, dissolving in solution obtained in step (2), and uniformly stirring, (4) adding proper amount of ammonium metavanadate to the obtained solution, and stirring for 2 hours, (5) centrifugally washing the obtained solution, drying, and placing the powder into a tubular furnace, and (6) sintering in a nitrogen-protected atmosphere. USE - Preparation method of zinc vanadate-modified graphene carbon triazotetrazole composite photocatalyst. ADVANTAGE - The method enables preparation of zinc vanadate-modified graphene carbon triazotetrazole composite photocatalyst with high photocatalytic performance, by simple and environmentally-friendly process.