▎ 摘　　要

NOVELTY - Preparing anti-total volatile organic compound (TVOC) powder comprises (i) soaking the coconut shell activated carbon with 3-5 wt.% dilute nitric acid aqueous solution, transferring the coconut shell activated carbon soaked in the dilute nitric acid aqueous solution to an ultrasonic disperser filled with deionized water, and ultrasonically dispersing, taking out, washing, drying, and grinding; (ii) at room temperature, adding absolute ethanol into the container and continuously introducing nitrogen, adding silane coupling agent, and adding nano silicon sheet, heating, transferring to an ultrasonic disperser for ultrasonic dispersion, adding ground coconut shell activated carbon powder and ultrasonically dispersing, removing the ethanol and drying to obtain coconut shell activated carbon powder loaded with nano-silicon sheet; and (iii) adding diatomite into 8-10 wt.% sulfuric acid aqueous solution and mixing, stirring at 70-90 degrees C for 1-2 hours, filtering and rinsing, and calcining. USE - The anti-TVOC powder is useful for preparing indoor degradable TVOC floral-scented paint (claimed). ADVANTAGE - The anti-TVOC powder can adsorb harmful substances close to the paint, in an environment with visible light or ultraviolet light, the valence band electrons of nano-titanium dioxide are excited, and the harmful substances can be decomposed faster. DETAILED DESCRIPTION - Preparing anti-total volatile organic compound (TVOC) powder comprises (i) soaking the coconut shell activated carbon with 3-5 wt.% dilute nitric acid aqueous solution for 2-3 hours, transferring the coconut shell activated carbon soaked in the dilute nitric acid aqueous solution to an ultrasonic disperser filled with deionized water, and ultrasonically dispersing for 15-20 minutes, taking out, washing, drying, and grinding to 500-700 meshes to obtain coconut shell activated carbon powder; (ii) at room temperature, adding absolute ethanol into the container and continuously introducing nitrogen, adding silane coupling agent under stirring at 100-150 revolutions/minute, stirring at 150-200 revolutions/minute for 3-5 minutes, and adding nano silicon sheet, stirring at 350-400 revolutions/minute for 10-20 minutes, heating to 50-70 degrees C, transferring to an ultrasonic disperser for ultrasonic dispersion, adding ground coconut shell activated carbon powder and ultrasonically dispersing for 5-15 minutes, removing the ethanol and drying to obtain coconut shell activated carbon powder loaded with nano-silicon sheet, where the mass ratio of the nano silicon sheet and the coconut shell activated carbon powder is 1:2-3, and the silane coupling agent and the nano silicon wafer is 5-8:100, the total mass of the nano silicon sheet and the coconut shell activated carbon powder after mixing is less than or equal to 50% of the mass of the absolute ethanol; (iii) adding diatomite into 8-10 wt.% sulfuric acid aqueous solution and mixing, stirring at 70-90 degrees C for 1-2 hours, filtering and rinsing, and calcining at 500-600 degrees C for 2-3 hours, where the mass ratio of diatomite and sulfuric acid aqueous solution is 1:8-10; (iv) mixing absolute ethanol, distilled water and glacial acetic acid with a volume ratio of 40-50:2-3:1.5-2 to form first solution, stirring and mixing butyl titanate and absolute ethanol with a volume ratio of 40-55:10-15 to form second solution, and continuously stirring for 20-40 minutes, adding calcined diatomite while stirring and dropping into first solution, continuously stirring for 50-60 minutes, adding triethylamine dropwise, stirring for 3-8 minutes, drying at 100-120 degrees C for 20-40 minutes, milling and vacuum drying for 1-2 hours, calcining at 400-550 degrees C for 3-5 hours to obtain diatomite powder with nano-sized titanium dioxide on the surface, where 0.3-0.5 g triethylamine and 10 g diatomite is added into every 40-55 ml butyl titanate; and (v) uniformly stirring coconut shell activated carbon powder loaded with nano silicon sheet, diatomite powder with nano-titanium dioxide loaded on the surface and graphene oxide in a mass ratio of 20-40:10-30:1-5, and ultrasonically dispersing for 10-15 minutes, filtering, drying, and crushing. INDEPENDENT CLAIMS are also included for: (1) a anti-TVOC powder prepared by the above method; (2) an indoor degradable TVOC floral-scented paint, comprising 0.1-0.3 wt.% bactericide, 0.6-0.8 wt.% dispersant, 0.6-0.8 wt.% cellulose, 0.5-0.6 wt.% mildew preventive, 0.3-0.5 wt.% wetting agent, 0.5-0.8 wt.% antifoaming agent, 1.9-2.2 wt.% anti-freezing agent, 1-1.5 wt.% film-forming auxiliary agent, 0.05-0.1 wt.% pH regulator, 10-18 wt.% titanium dioxide , 10-15 wt.% pigment and filler, 25-35 wt.% emulsion, 1-3 wt.% floral essential oil, 0.4-0.8 wt.% thickening agent, 6-9 wt.% anti-TVOC powder, and deionized water (remaining amount); and (3) a method for preparing indoor degradable TVOC floral-scented paint, comprising adding water, bactericide, dispersant, cellulose,mildew preventive, wetting agent, antifoaming agent, anti-freezing agent, film forming auxiliary agent and pH regulator into the disperser, and uniformly stirring at 400-700 revolutions/minute, adding titanium dioxide, pigment and filler and anti-TVOC powder, stirring for 20-30 minutes at a stirring rate of 900-1100 revolutions/minute until the fineness is less than 50 mu m, adding emulsion, floral essential oil and thickening agent and uniformly mixing.