TiO_2柱撑蒙脱土的制备及其光催化性能的研究  

Prepareration and photocatalytic activities of TiO_2 pillared montmorillonite

作　　者：马霞[1] 冯莉[1] 燕传勇[1] 贺文萍[1] 刘炯天[1] 

机构地区：[1]中国矿业大学化工学院,徐州221008

出　　处：《化工新型材料》2009年第2期83-85,95,共4页New Chemical Materials

基　　金：国家自然科学基金(No.50574092);国家杰出青年科学基金(No.50425414);江苏省青蓝工程资助项目

摘　　要：采用TiCl4在HCl中的水解制备TiO2柱撑蒙脱土(TiO2-PILM)纳米光催化材料,通过X射线衍射和红外光谱对其进行了表征。考察了甲基橙的初始浓度、甲基橙溶液、pH值对光催化降解效果的影响。结果表明,TiO2-PILM具有大的晶面间距,TiO2-PILM对甲基橙有较好的光催化活性,吸附动力学数据很好地符合Lagergren二级速率方程,在甲基橙初始浓度为10mg/L、投样量为0.02g、在酸性或碱性条件时,TiO2-PILM对甲基橙的降解率较高。Titanium pillared montmorillonite （TiO2-PILM） was synthesized by partial hydrolysis of TiCh in HCl and characterized by means of powder X-ray diffraction and FT-IR. The effects of methyl orange initial concentration and pH value on the efficiency of photocatalytic degradation of phenol were studied. The results indicated that TiO2-PILM synthesized was of stable structure, with large basal spacing. The sorption kinetic data can be described by the Lagergren pseudo-second order rate equation well. The photocatalytic degradation efficiency was relatively higher when the initial methyl orange concentration was 10mg/L , TiO2-PILM dosage was 0.02g , and pH was lower or higher.

关 键 词：TIO2 蒙脱土 降解 甲基橙 

分 类 号：X703[环境科学与工程—环境工程] TQ426[化学工程]