Graphite oxide (GO) was prepared by

Graphite oxide (GO) was prepared by by the method of oxidizing graphite powder. Then, graphene/silver (RGO/Ag) composites was prepared by reacting GO and AgNO3 of different mass ratios with hydrazine hydrate. Furthermore, the absorbance of Rhodamine B measured at different times was used as the criterion for determining the photocatalytic activity of the catalyst. The degradation of the organic dye Rhodamine B in wastewater by RGO/Ag photocatalyst with different composite ratios was investigated. By analyzing the particle size, X-ray diffraction pattern and infrared spectrum of the material, the influence of the difference of the composite ratio on the composite material was judged. By comparing the absorption curves and degradation rates of Rhodamine B at different catalysts at different times, it was found that 0.1 g of 75% RGO/Ag photocatalyst prepared with 75% GO and 25% AgNO3 degraded 30 mL 110-5 mol•L-1 of rhodamine B under visible light for 60 min, the degradation rate can reach 88.07%, and the degradation efficiency is significantly higher than that of pure RGO, about 2 times.