▎ 摘　　要

NOVELTY - Preparing silanized reduced graphene oxide-titanium dioxide composite material, comprises, (i) mixing tetrabutyl titanate solution and aqueous graphene oxide dispersion, stirring, and removing solvent to obtain graphene oxide/titanium dioxide composite material, (ii) dispersing the graphene oxide/titanium dioxide composite material in polar organic solvent to obtain graphene oxide/titanium dioxide dispersion liquid, and (iii) mixing the graphene oxide/titanium dioxide dispersion liquid and sodium N-(trimethoxysilylpropyl)ethylenediamine triacetate, heating and reacting, then adding methanol to the reaction solution, and performing hydrothermal reaction to obtain final product. USE - The composite material is useful as sewage treatment agent in water treatment (claimed). ADVANTAGE - The composite material: has excellent adsorption performance for pollutants, photocatalytic performance and excellent degradation effect on phenol; and reduces content of pollutant cadmium(II). DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for silanized reduced graphene oxide-titanium dioxide composite material prepared by above mentioned method, where the silanized reduced graphene oxide-titanium dioxide composite material includes graphene oxide substrate, titanium dioxide and sodium N-(trimethoxysilylpropyl)ethylenediamine triacetate.