▎ 摘　　要

NOVELTY - Preparing three-dimensional sea urchin-shaped silver/reduced graphene oxide/titanium dioxide composite material involves heating Titanium tetrachloride and tetrabutyl titanate in organic solvent to obtain three-dimensional sea urchin-type titanium dioxide. The three-dimensional sea urchin titanium dioxide obtained, graphene oxide, silver nitrate, reducing agent and water are mixed to perform hydrothermal reaction to obtain three-dimensional sea urchin-shaped silver/reduced graphene oxide/titanium dioxide composite material. USE - Method for preparing three-dimensional sea urchin-shaped silver/reduced graphene oxide/titanium dioxide composite material for photo-catalysis, photo-degradation or solar battery field (claimed). ADVANTAGE - The method enables to prepare three-dimensional sea urchin-shaped silver/reduced graphene oxide/titanium dioxide composite material that has high specific surface area and low electron-recombination rate of the cavity, and improves the utilization ratio of solar energy.