▎ 摘　　要

NOVELTY - Preparation of light catalytic material based on energy band modulation of double quantum dot sensitized graphene/oxide composite structure, involves growing metal quantum dot material on a substrate material, migrating graphene to substrate material surface of deposited metal quantum dots, growing oxide thin films, and obtaining double quantum dot sensitized graphene/oxide composite photo catalytic material in metal quantum dot sensitized graphene/oxide composite structure by chemical bath deposition method of narrow band gap semiconductor quantum dot materials. USE - Preparation of light catalytic material based on energy band modulation of double quantum dot sensitized graphene/oxide composite structure (claimed). ADVANTAGE - The preparation method is featured with wide spectral response range, and UV-visible light range, and achieves efficient separation of carriers, promotes fast transmission of electrons and holes, reduces the recombination probability and improves the photocatalytic performance of semiconductor materials. DETAILED DESCRIPTION - Preparation of light catalytic material based on energy band modulation of double quantum dot sensitized graphene/oxide composite structure, involves growing metal quantum dot material comprising platinum, gold and silver on a substrate material by sputtering or deposition method, migrating graphene to the substrate material surface of deposited metal quantum dots by chemical vapor deposition process, growing oxide thin films by atomic layer deposition process, and obtaining double quantum dot sensitized graphene/oxide composite photo catalytic material in metal quantum dot sensitized graphene/oxide composite structure by chemical bath deposition method of narrow band gap semiconductor quantum dot materials including cadmium selenide and cadmium sulfide.