▎ 摘　　要

NOVELTY - Preparation of zinc (Zn)-doped alpha -iron oxide (Fe2O3)/graphene aerogel composite catalyst comprises pretreating graphene to obtain graphene oxide, dispersing graphene oxide in deionized water to obtain graphene oxide dispersion liquid, adding iron sulfate heptahydrate (FeSO4.7H2O) and zinc acetate dihydrate (Zn(Ac)2.2H2O) into the graphene oxide dispersion liquid to obtain precursor solution, placing the precursor solution in a hydrothermal kettle and reacting at a preset temperature and preset time to obtain an initial gel, cooling, dialyzing and drying. USE - The method is for preparation of Zn-doped alpha -Fe2O3/graphene aerogel composite catalyst used for oxidation system i.e. composite catalyst/oxone oxidation system useful for treating antibiotic wastewater (all claimed). ADVANTAGE - The catalyst has good catalytic performance and good visible light response ability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for oxidation system using the composite catalyst, where the oxidation system is a composite catalyst/oxone oxidation system.