▎ 摘　　要

NOVELTY - Preparing manganese ferrite-titanium dioxide-graphene aerogel, comprises (i) preparing aqueous graphene oxide solution by using ultrasonic cell pulverizer, (ii) performing ultrasonic treatment of aqueous graphene oxide solution with absolute ethanol for 20-60 minutes, then adding ferric nitrate nonahydrate and aqueous manganese nitrate tetrahydrate solution, and ultrasonically treating for 20-60 minutes to obtain solution A, (iii) adding reducing agent into solution A, performing ultrasonic treatment for 20-60 minutes, adding tetrabutyl titanate alcohol solution, and ultrasonically treating for 20-60 minutes to obtain dispersion, (iv) transferring the above dispersion to high temperature and high pressure reactor, and reacting, (v) cooling the reactor to room temperature, then taking out the sample, and soaking in 5-10 vol.% aqueous ammonia, and (vi) soaking obtained sample in 10-20% ethanol, and freeze-drying to obtain final product. USE - The method is useful for preparing manganese ferrite-titanium dioxide-graphene aerogel. ADVANTAGE - The method: is simple and convenient; adopts one-step hydrothermal method; utilizes polyethyleneimine, which promotes reduction of graphene oxide, and makes the aerogel easier to complete self-assembly; introduces amino groups, which enhance the mechanical strength of aerogel; enhances utilization rate of visible light; and produces aerogel, which can be recovered as catalyst easily, and is environmentally friendly.