桂林电子科技大学学报2012，Vol.32Issue(1)：82-86,5.
Dy-TiO2-膨润土复合催化剂处理茜素红、碱性品红的研究
Study of the DTB composite catalyst photocatalytic degradation for alizarin red and basic fuchsin
摘要
Abstract
To degrade alizarin red and basic fuchsin in light conditions, the Dy-TiO2-bentonite (DTB)composite catalyst were prepared by bentonite as a carrier are four n-butyl titanate and dysprosium salt as raw material, the use of sol - gel method of dysprosium doped. The catalyst photocatalytic's structure and morphology were characterization by XRD and SEM, the results showed the catalyst photocatalytic has an huge specific surface and the anatase TiO2 crystalline characteristics peaks was clearly existence. The crystal face spacing of DTB's bentonite obviously increased 0.196 nm, from 1. 691 nm to 1. 887 nm. The influence of catalyst photocatalytic dosage, initial dye concentration, illumination time, pH value and other factors on decolorization rate, of alizarin red and basic fuchsin were studied. The degradation mechanism and kinetic equation of catalyst photocatalytic were studied at the same time. The data shows that under the conditions of DBT 0. 1 g, illumination time 45min and pH = 7, the degradation a-mount of alizarin red and basic fuchsin was 18. 0 mg/g, 19. 5 mg/g. While under the same condition, use the Solar light, the degradation amount of alizarin red and basic fuchsin reached 20 mg/g or more. After the catalyst photocatalytic has been used twice, the removal rate of alizarin red and basic fuchsin was still reached 80% or more. The DTB degradation of the dynamic behavior of alizarin red and basic fuchsin line with second-order rate kinetic adsorption model.关键词
DTB/光催化降解/茜素红/碱性品红Key words
DTB/ photocatalytic degradation/ alizarin red/ basic fuchsin分类
化学化工引用本文复制引用
王杨鹤,夏金虹,韦薇,黄国银..Dy-TiO2-膨润土复合催化剂处理茜素红、碱性品红的研究[J].桂林电子科技大学学报,2012,32(1):82-86,5.基金项目
桂林电子科技大学大学生创新性实验项目(2008C043) （2008C043）
