| abstract |
The invention belongs to the technical field of wastewater treatment, and in particular relates to a preparation method and application of an ammonium salt-silicon modified silicon-based nano-TiO 2 material. The n-butylamine is added to the liquid sodium silicate and stirred to obtain a mixed solution; under the condition of heating and stirring, the mixed solution and sulfuric acid are respectively added dropwise to the aluminum sulfate solution, and the ammonium salt solution is added to ultrasonically disperse and crystallize to obtain a mixture; After the mixture is impregnated in silica gel, it is dried and calcined to obtain a silicon-based adsorbent material; the silicon-based adsorbent material is added to an aqueous ammonia solution, stirred, and dried; the treated silicon-based adsorbent material and nano-TiO 2 are placed in anhydrous ethanol Ultrasonic dispersion, then stirring at room temperature, heating to evaporate ethanol, to obtain ammonium salt-silicon modified silicon-based nano-TiO 2 material. After being loaded with titanium dioxide, the carrier silicon-based adsorption material of the invention has high catalytic adsorption capacity, can remove cyanide ions and adsorb heavy metal ions at the same time. |