SiO2 composite aerogel material loaded with photocatalyst and preparation method of SiO2 composite aerogel material

The invention relates to a SiO2 composite aerogel material loaded with a photocatalyst and a preparation method of the SiO2 composite aerogel material, and belongs to the technical field of adsorption/photocatalytic materials. The preparation method of the SiO2 composite aerogel material loaded with the photocatalyst comprises the step of preparing composite gel: dipping SiO2 gel into photocatalyst sol or solution to obtain photocatalyst/SiO2 composite gel; carrying out deposition aging treatment on the obtained photocatalyst/SiO2 composite gel by utilizing alkyl organic solvents, wherein the alkyl organic solvents are hexamethyldisiloxane, alcohol and alkane solvents, and the alkyl organic solvents are respectively hexamethyldisiloxane, alcohol (such as ethanol or isopropanol) and alkane (such as n-hexane or heptane) solvents; then carrying out surface modification and ambient pressure drying to obtain a photocatalyst/SiO2 composite aerogel material; and the prepared photocatalyst/SiO2 composite aerogel is of a mesoporous structure, with a pore diameter of 8-20 nm, a specific surface area of 200-700 m /g, and a pore volume of 0.5-2.0 cm /g.