▎ 摘　　要

NOVELTY - Preparing graphdiyne oxide involves mixing cuprous chloride and tetramethylethylenediamine and dehydrated alcohol, stirring, removing ethanol, adding ethylene glycol to obtain copper catalyst ethylene glycol solution, mixing obtained copper catalyst ethylene glycol solution pyridine, and ethylene glycol to obtain first solution, mixing the tetrahydrofuran solution of hexa(trimethylsilynyl)benzene, o-dichlorobenzene and tetrabutylammonium fluoride to obtain second solution, mixing the obtained first solution and second solution, standing in the dark to obtain graphdiyne, mixing the obtained graphdiyne and concentrated sulfuric acid, stirring, adding hydrogen peroxide, stirring, heating up, and stirring continuously to obtain the graphdiyne oxide. USE - Method for preparing graphdiyne oxide that is used for preparing graphdiyne oxide film for adsorping and separating uranium in wastewater (all claimed). ADVANTAGE - The method enables to prepare graphdiyne oxide in large quantity by using hexa(trimethylsilynyl)benzene (HEB-TMS) as raw material, and is simple and easy to operate, repeatable and high in yield. The prepared graphdiyne oxide has high retention rate and selectivity to uranium. DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for: 1. a graphdiyne oxide prepared by the preparation method; 2. a method for preparing graphdiyne oxide film, which involves: mixing graphdiyne oxide with water, performing ultrasonic treatment, and performing suction filteration to form a film to obtain the graphdiyne oxide film; and 3.a graphene oxide film prepared by the preparation method.