▎ 摘　　要

NOVELTY - The composite material comprises nano-silver, nano titanium dioxide and reduced graphene oxide. The nano silver is prepared from analytically or industrially pure silver nitrate and other silver-containing soluble salts. The nano titanium is prepared from ethanol-soluble titanium-containing compounds such as analytically or industrially pure butyl titanate. The reduced graphene oxide is prepared from aqueous dispersion of other commercial products containing graphene oxide, such as analytically or industrially pure graphene oxide. USE - Composite material used for providing photoelectric effect and photocatalytic degradation of organic matter e.g. organic wastewater degradation. ADVANTAGE - The method is simple and inexpensive. The nano-silver/graphene/nano-titanium dioxide composite material has stable performance, high catalytic activity and large specific surface area. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of the composite material, which involves dispersing graphene oxide in water to obtain a graphene oxide dispersion liquid, dissolving water-soluble silver salt such as silver nitrate in water to obtain aqueous solution containing silver ions, dissolving ethanol-soluble titanium-containing compounds such as butyl titanate in ethanol to obtain ethanol solution containing titanium ions, mixing and uniformly dispersing the graphene oxide dispersion liquid, aqueous solution containing silver ions and ethanol solution containing titanium ions, transferring the mixture into a hydrothermal kettle, carrying out hydrothermal reaction, cooling to room temperature, washing and drying.