Supported Of Tio₂ And Their Photodegradation On Dye Wastewater

TiO₂ sol was synthesized from 4-butyl titanate by the method of sol-gel and diatomaceous earth and glass fiber net are used for the supported TiO₂ to prepared immobilized photocatalysts.a certain concentration of direct red and acid red as solution targeted degradation,Photocatalytic properties of TiO₂ suspension and synthesis conditions of supported TiO₂ were studied under ultraviolet radiation.The experimental results indicated that: TiO₂ have a good photocatalytic degradation for acid red and direct red, the effects of pH, initial concentration,TiO₂ dosage, radiation time and other parameters have a certain impact on the degradation effect.the decolorization rate of acid red and direct red reached 74% and 85% in the most suitable conditions.Supported TiO₂ by diatomaceous earth and glass fiber network has a good performance of photocatalytic degradation for dyes.the effects of Catalyst ratio,calcination temperature,time of calcination,diameter of glass fiber and other parameters have a certain impact on catalytic performance of supported TiO₂. the decolorization rate of acid red and direct red reached 72% and 66% in the most suitable conditions.