Method for hydrothermal method preparation of graphene-loaded flower-type titanium dioxide composite material

• Main Authors: WANG YAWEN, CHEN FANG, GOU HAO, ZHANG PING, GUO RUIBIN, WEI XIAOJIAO, MO ZUNLI, HU RUORUO
• Format: Patent
• Language: English
• Published: 05.08.2015
• Subjects: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; THEIR RELEVANT APPARATUS; TRANSPORTING

The invention discloses a method for hydrothermal method preparation of a graphene-loaded flower-type titanium dioxide composite material and belongs to the technical field of composite materials. The method utilizes graphite oxide and a titanium salt as precursors, a low carbon alcohol-water mixed solvent as a medium and a surfactant as a soft template and comprises carrying out functionalization modification on the graphite oxide, adding an acid solution of the titanium salt into the modified graphite oxide, carrying out stirring so that the titanium ions are combined to the functionalized graphite oxide, adding the functionalized graphite oxide into a reactor, and carrying out a hydro-thermal reaction process so that the graphene-loaded flower-type titanium dioxide composite material is prepared by one step. The graphene-loaded flower-type titanium dioxide composite material comprises a rutile phase titanium dioxide nanometer rod-assembled flower-type structure with nanometer rod diameters of 15-35nm on the graphene surface, and through graphene connection, the structure has high specific surface area and can promote electron transmission on the material. Therefore, the graphene-loaded flower-type titanium dioxide composite material has good application prospects in the fields of photocatalysis, solar cells and gas-sensitive sensors.