▎ 摘　　要

NOVELTY - Preparing montmorillonite-titanium dioxide-graphene composite photocatalyst with column supporting structure comprises (i) mixing 68 wt.% nitric acid and deionized water to obtain dilute nitric acid, (ii) mixing isopropanol, titanate and dilute nitric acid solution in a volume ratio of 15:1:30 ml, and stirring for 1 hour until transparent, (iii) adding 1 g montmorillonite into 100 ml dilute nitric acid, ultrasonic stripping for 2 hours, adding montmorillonite suspension into the solution obtained in step (ii), continuously adding dilute nitric acid when the total volume reaches 250 ml, and stirring for 1 hours, (iv) heating the solution to the set temperature, thermally preserving, and continuously stirring, (v) adding graphene solution into the solution obtained in step (iv), thermally preserving, and continuously stirring, and (vi) centrifuging the reaction product, washing with water, and drying to obtain montmorillonite-titania-graphene composite photocatalyst. USE - The montmorillonite-titanium dioxide-graphene composite photocatalyst with column supporting structure is useful for removing pollutant, producing water cracking hydrogen and carbon dioxide fuels, and antibacterial and sterilizing fields. ADVANTAGE - The method has simple process, and is easy to realize large-scale production. The catalyst has uniform loading of titanium dioxide, has reactants that is easy to enter and exit, makes full use of high-priced graphene, and has good photocatalytic effect. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for montmorillonite-titanium dioxide-graphene composite photocatalyst with column supporting structure, comprising column supporting structure with nano-titanium dioxide supporting single layer of montmorillonite and single layer of graphene, titanium dioxide forms contact with montmorillonite and graphene sheets, and the exchange of reactive species is easy.