▎ 摘　　要

NOVELTY - Graphene substrate and obtained self-assembled sensitized quantum-dot cadmium-selenium-titanium inorganic source sol are hydrothermal-treated, to obtain cadmium-selenium-titanium inorganic source/graphene complex. Cadmium-selenium-titanium inorganic source/graphene complex as template is subjected to Soxhlet extraction using extraction agent and low-temperature heat-treated, to obtain sensitive quantum-dot mesoporous coated graphene cadmium-selenium visible-light catalytic composite nanomaterial. USE - Preparation of sensitive quantum-dot mesoporous coated graphene cadmium-selenium visible-light catalytic composite nanomaterial used for photocatalytic processing of titania material. ADVANTAGE - The method enables preparation of sensitive quantum-dot mesoporous coated graphene cadmium-selenium visible-light catalytic composite nanomaterial having excellent physical property, chemical property and visible-light catalytic activity, large surface area and uniform pore size distribution with high yield, by simple method. DETAILED DESCRIPTION - Oleic acid as fatty acid, chloroform as solvent and cadmium oxide are processed in octadecene by solvothermal method at 60-90 degrees C, preferably 70-85 degrees C for 30 minutes or more, preferably 30-60 minutes, to obtain cadmium-selenium quantum dots. Ionic liquid and cadmium-selenium quantum dots are ultrasonic-mixed, to obtain cadmium-selenium solution. The cadmium-selenium solution as template, butyl titanate as inorganic source and hydrochloric acid as catalyst are mixed, to obtain self-assembled sensitized quantum-dot cadmium-selenium-titanium inorganic source sol. Graphene substrate and self-assembled sensitized quantum-dot cadmium-selenium-titanium inorganic source sol in ratio of 1:1-4, preferably 1:2 are hydrothermal-treated, to obtain cadmium-selenium-titanium inorganic source/graphene complex. Cadmium-selenium-titanium inorganic source/graphene complex as template is subjected to Soxhlet extraction using extraction agent and low-temperature heat-treated, to obtain sensitive quantum-dot mesoporous coated graphene cadmium-selenium visible-light catalytic composite nanomaterial.