▎ 摘　　要

NOVELTY - Method for preparing polyaniline/silica/graphene oxide aerogel composite material, involves (a) dispersing silica microspheres in a mixed solution of toluene and 3-aminopropyltriethoxysilane, ultrasonically treating, transferring to oil bath kettle, heating, centrifuging, washing with toluene and absolute ethanol for three times, transferring to vacuum drying box, and drying, (b) mixing graphene oxide solution and amino-silicon dioxide microspheres, adding sodium dodecyl sulfate and stirring, (c) transferring aniline to hydrochloric acid, uniformly stirring, and ultrasonically treating, (d) dispersing ammonium persulfate in secondary water, adding to dispersion (II), stirring, centrifuging, washing the mixture with ethanol and secondary water, and dispersing the obtained composite product in secondary water, and (e) adding polyvinyl alcohol to secondary water, heating, cooling to room temperature, dripping dispersion (III), stirring for crosslinking, leaving still and freeze drying. USE - The method is used for preparing polyaniline/silica/graphene oxide aerogel composite material for adsorbing catalytic pollutants in water (claimed). ADVANTAGE - The composite material has strong adsorption and catalysis capacity for rhodamine B, fast processing speed and high efficiency, is easy in separation and recovery of materials, and reused for multiple times. DETAILED DESCRIPTION - Method for preparing polyaniline/silica/graphene oxide aerogel composite material, involves (a) dispersing 0.4-0.8 g silica microspheres to a mixed solution of 20-40 ml toluene and 0.3-0.6 ml 3-aminopropyltriethoxysilane, ultrasonically treating for 30 minutes until the mixture is uniformly dispersed, transferring to oil bath kettle, heating at 105 degrees C for 6 hours, centrifuging, washing with toluene and absolute ethanol three times, transferring to vacuum drying box, and drying at 60 degrees C to obtain the amino-silicon dioxide microspheres, (b) mixing 10 ml graphene oxide solution and 3-10 mg/ml amino-silicon dioxide microspheres with same volume and concentration, adding 25-35 mg sodium dodecyl sulfate, ultrasonically treating for 30 minutes, and stirring for 1 hour to obtain a dispersion (I), (c) transferring 25-50 mu l aniline to 3-5 ml mol/l hydrochloric acid, uniformly stirring in an ice bath, completely dissolving, adding to dispersion (I), and ultrasonically treating for 20 minutes to obtain a dispersion (II), (d) dispersing 61.3-122.5 mg ammonium persulfate in 5 ml secondary water, adding to dispersion (II), stirring for 12 hours under an ice bath, centrifuging, washing the mixture with ethanol and secondary water to obtain a polyaniline/silicon dioxide/graphene oxide composite product, and dispersing the obtained composite product in 10 ml secondary water to obtain a dispersion (III), and (e) adding 0.3-0.5 g polyvinyl alcohol having molecular weight of 1788 to 15-20 ml secondary water, heating at 90 degrees C in the oil bath kettle until completely dissolving, cooling to room temperature, dripping dispersion (III), stirring for 1 hour for crosslinking, leaving still the solution for 30 minutes, and freeze drying at -40 degrees C for 36 hours to obtain the product. An INDEPENDENT CLAIM is included for use of composite material for adsorbing catalytic pollutants in water, involving adsorption and catalyzing processes of rhodamine B coexist by (i) dissolving 0.0025 g rhodamine B in water, fixing the volume to 250 ml in volumetric flask, preparing to 10 mg/ml standard solution, taking 30 ml standard solution separately in six small beakers, where in every 1 ml, dripping 30% hydrogen peroxide solution to each of three small beakers, (ii) adding 0.0100 g polyaniline/silicon dioxide/graphene oxide aerogel composite material to the solution obtained in step (i) through adsorption catalysis, oscillating at room temperature, after 5 minutes, sucking out in 5 ml centrifugal tube, and repeating the above steps for every 10 minutes, and (iii) calculating the adsorption rate and catalytic rate by measuring the absorbance of the solution at different times for calculating the adsorption rate and catalysis rate at different times.