The Preparation And Effect Of The New Modified Supported Nanometer TiO₂ Photocatalytic Turntable In Dyeing Waste Water Treatment

TiO₂ photocatalytic oxidation was been widely applied in dyeing wastewater treatment process for its stable,activity and high catalytic efficiency.But in conventional TiO₂photocatalytic oxidation applications exists the problems that the low activity of photocatalytic material,and the powder TiO₂ photocatalytic materials provided shielding effect which decrease utilization of light energy and recovery after requirement to pervent secondary pollution。And the conventional fixed TiO₂ photocatalyst material had disadvanyes of the less mass transfer and low quantity of wastewater treatment for the illumination area.In order to solve above problems,I prepared by sol-gel method to modified nano TiO₂photocatalytic materials by add Fe³⁺.And then load it on the surface of flat glass.We investigated the optimal conditions for the new meterial,and designed a modified load nanometer TiO₂ photocatalysis turntable.The main contents are as follows:1、I use response surface method to establish second-order polynomial model,and use Design expert softwar to compesite the experment and to analyze the results.To studies the effect of different Fe³⁺addition,load times and calcination temperature on the degredation of modified nano TiO₂ photocatalytic materials doming its preparetion.The analysis of test data was conducted to identify the optimal conditions supported nano TiO₂ prepareing.I used scanning electron microscopy method,X-ray diffraction method,and fourier transform method to testing the modified nano TiO₂ photocatalytic materials.2、I use the new modified supported nanometer TiO₂ photocatalytic,the powder P25turntable with nano TiO₂ photocatalyst and the unmodified supported nano TiO₂ photocatalyst to degradation the solution of methylene blue under the same reaction conditions,and make comparative and analysis between the three kinds of meterials.3、I analysis different rotary speed,different initial concentrat of the solution,different pH of the solution and different number of cases to reuse in the impact of new load type modified TiO₂ photocatalytic degradation efficiency turntable in degrade methylene blue solution.