The polyvinyl alcohol/graphene oxide (PVA/GO) hydrogel was prepared. It was confirmed that the adsorption performance of polyvinyl alcohol/graphene oxide hydrogel composite material was improved, and it does not cause secondary pollution. According to adsorption experiments, it was found that PVA/ GO adsorbent with a content of 30 % graphene oxide has the best comprehensive performance. The suitable environment of adsorption was under 25°C, 12-18 h for adsorption time and acidic conditions. The suitable adsorbent dosage was 0.3g and the suitable concentration of the dye was 10 mg/LThe authors gratefully acknowledge the financial support of the Shaoxing Public Welfare Project (Grant No. 2017B70042), and the International Science and Technology Cooperation Project of Shaoxing University (Grant No. 2019LGGH1004)Postprint (published version
