▎ 摘　　要

NOVELTY - A photocatalyst coating with photothermal effect comprises a pleated graphene ball carrier, titanium dioxide functional layer and photothermal particles covered on the surface of the carrier, with the mass ratio of 1:0.05-3:0.2-2.The graphene ball has intensity ratio (ID/IG) of the D and G bands in Raman spectroscopy of less than 0.01 and has AB stacked structure with thickness more than 30 layers. USE - Photocatalyst coating with photothermal effect. ADVANTAGE - The photocatalyst coating with photothermal effect promotes volatilization of harmful substances e.g. formaldehyde with improved full spectrum utilization. The pleated graphene ball with thermionic accumulation effect reduces the graphene and titanium dioxide barrier, and improves the light quantum efficiency. The coating extends to light absorption wavelength, improves catalytic efficiency for efficient application to visible light, improves energy utilization rate and reduces cost. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for preparation of photocatalyst coating with photothermal effect. The method involves high temperature sintering of 1 pt. wt. graphene ball to remove defect and obtain the photocatalyst carrier layer. The semi-finished coating product is prepared by adding 1 pt. wt. graphene ball, 0.05-3 pts. wt. nanotitanium dioxide, 0.02-0.1 pt. wt. chloroplatinic acid and 0.01-0.05 pt. wt. sodium borohydride, uniformly stirring for 1-10 minutes, and drying at room temperature for 0.5-12 hours. The coating product is heated to 60-100 degrees C for 2-6 hours, transferred to the inert gas with hydrogen volume concentration of 5%, reduced at 600-1600 degrees C for 1-4 hours, and plasma processed at 10-100W for 1-10 minutes to obtain photocatalyst coating which is then uniformly mixed with 0.2-2 pts. wt. photothermal particles.