TiO_(2)/蒙脱土的制备及其光催化性能研究  

Preparation of TiO_(2)/montmorillonite and its photocatalytic performance*

作　　者：张秋明 ZHANG Qiu-ming(Shanghai Diyang Chemical Technology Co.,Ltd.,Shanghai 200135,China)

机构地区：[1]上海迪阳化学技术有限公司,上海200135

出　　处：《化学工程师》2025年第4期19-23,7,共6页Chemical Engineer

基　　金：上海市科技局重点攻关项目(SH202215616)。

摘　　要：采用水热法成功制备了Ti O_(2)/MMT复合样品,通过XRD、FTIR、SEM、BET、UV-Vis DRS和PL对合成样品的结构和性质进行分析,以有机污染废水为目标污染物,对Ti O_(2)/MMT复合样品的光催化活性进行评价,结果表明,Ti O_(2)/MMT复合样品具有较大的比表面积和较高的光生载流子分离效率,经过5h紫外光照射后对亚甲基蓝、环氧沙星和石化废水降解率分别达到了96.9%、88.1%和83.9%,且具有良好的稳定性。活性物种实验表明,h^(+)、·OH和·O_(2)^(-)均为降解过程中的活性物种。TiO_(2)/MMT composite was successfully prepared through hydrothermal method.The structure and properties of as-synthesized samples were analyzed by XRD,FTIR,SEM,BET,UV-Vis DRS and PL technique.The photocatalytic activity of TiO_(2)/MMT composite was evaluated using organic polluted wastewater as the target pollutant.The research results showed that TiO_(2)/MMT composite has large specific surface area and high photogenerated carrier separation efficiency.After 5 hours of UV irradiation,the degradation rates of methylene blue,epoxacin and petrochemical wastewater reached 96.9%,88.1%and 83.9%,respectively.At same times,TiO_(2)/MMT exhibited good stability.The active species experiment showed that h+,·OH and·O_(2)^(-) are all active species during degradation process.

关 键 词：Ti O_(2)/MMT 光催化 有机废水 

分 类 号：O643.3[理学—物理化学]