Study on Preparation and Performances of TiO2/Potassium Titanate Photocatalyst
A new carrier of catalyst was chosen. Sol-gel method was used to preparate TiO2/potassium titanate photocatalyst. EDS shows the main peck included Ti, O, K in potassium titanate whisker. The main peak of K disappeared and the peaks of Ti, O stayed after whisker was covered. It directed that the surface of sample was covered by TiO2. The figure of UV-vis diffuse reflection shows TiO2/potassium had more stronger peak in ultraviolet area. In the reaction device of photochemistry, using middle-pressure mercury lamp as illumination, rhodamine B as simulant pollutant, the photocatalytic performance of TiO2/potassium titanate was studied. The decoloration rate of TiO2/potassium titanate which was used to deal with rhodamine B in the experiment was influenced by the pH value, light intensity, reaction temperature, aeration quantum, the dosage of catalyst and initial concentration of rhodamine B. Such conditions were chosen: pH 6, the illuminance of 250 W, the temperature of 313 K, the aeration quantum of 2.0 L/min. When the concentration of rhodamine B was 8 mg/L, the dosage of TiO2/potassium titanate was 0.01 g/L. The decoloration rate of TiO2/potassium titanate dealt with the rhodamine B reach over 95％ in 160 minutes, and compare with TiO2, the decoloration rate of rhodamine B was improved 0.50-1.91 multiple.
TiO2/potassium titanate photocatalysis rhodamine B catalytic carrier
Songtian Li Chundu Wu Yongsheng Yan Yuehua Deng
School of Chemistry and Chemical Engineering Pingdingshan University Pingdingshan, China School of Environment Jiangsu University Zhenjiang, China
国际会议
上海
英文
3475-3478
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）