▎ 摘　　要

NOVELTY - High-efficiency volatile organic compounds photocatalytic purification material, prepared by (a) adding surfactant into the mixed solution of ethanol and deionized water, adding urea, stirring, soaking the filter paper in it, ultrasonically processing, adding hydrochloric acid solution with a concentration of 1 M under stirring state, adding titanium n-butoxide solution drop wise, stirring evenly, ultrasonically processing, taking out the filter paper, washing with deionized water, vacuum drying at room temperature, (b) calcining the dried filter paper in an air-atmosphere tube furnace, increasing the temperature to 300℃ for 1 hour and obtaining nitrogen-doped porous titanium dioxide nanoparticles and (c) ultrasonically dispersing nitrogen-doped porous titanium dioxide nanoparticles in deionized water, adding graphene oxide, mixing evenly, placing the mixture into a high-pressure reaction vessel, stirring, centrifuging, washing with deionized water and drying to obtain material. USE - Used as high-efficiency volatile organic compounds photocatalytic purification material. ADVANTAGE - The method utilizes surfactant Pluronic P123 and cellulose filter paper as sacrificial templates to synthesize hierarchical porous titanium dioxide nanoparticles, nitrogen doping and loading reduced graphene oxide; improves the hydrophobicity of the surface of photocatalytic purification materials and improves the selective adsorption of volatile organic substances. DETAILED DESCRIPTION - High-efficiency volatile organic compounds photocatalytic purification material, prepared by (a) adding surfactant into the mixed solution of ethanol and deionized water, adding urea, stirring, soaking the filter paper in it, ultrasonically processing, adding hydrochloric acid solution with a concentration of 1 M under stirring state, adding titanium n-butoxide solution drop wise, stirring evenly, ultrasonically processing, taking out the filter paper, washing with deionized water, vacuum drying at room temperature, (b) calcining the dried filter paper at 120℃ in an air-atmosphere tube furnace, increasing the temperature to 300℃ for 1 hour, then increasing the temperature to 450℃ for 4 hours and obtaining nitrogen-doped porous titanium dioxide nanoparticles and (c) ultrasonically dispersing nitrogen-doped porous titanium dioxide nanoparticles in deionized water, adding graphene oxide, mixing evenly, placing the mixture into a high-pressure reaction vessel, stirring at 160℃ for 6 hours, centrifuging, washing with deionized water and drying to obtain material.