▎ 摘　　要

NOVELTY - Preparation of nano zero-valent iron/titanium dioxide/graphene composite photocatalyst involves dispersing selenium powder in a hydrazine hydrate solution, and then adding titanium tetrachloride to perform a hydrothermal reaction to obtain titanium diselenide compounded with hydrazine, dispersing the titanium diselenide compounded with hydrazine in ethanol, and then adding iron salt to perform a reduction reaction, and calcining to obtain a nano zero-valent iron/titanium dioxide composite material, dispersing graphene oxide in an ethanol water solvent, and adding the nano zero-valent iron/titanium dioxide composite material to perform a secondary hydrothermal reaction. USE - Preparation of nano zero-valent iron/titanium dioxide/graphene composite photocatalyst used in degradation of organic pollutants (all claimed) such as organophosphorus pesticides. ADVANTAGE - The composite photocatalyst has the performance of efficiently adsorbing and degrading organophosphorus pesticides under the sun. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for an application of the nano zero-valent iron/titanium dioxide/graphene composite photocatalyst in the degradation of organic pollutants.