纳米TiO_2/硅藻土复合材料光催化降解模拟染料废水研究  

The Studies on Photocatalytic Degradation of Simulated Dye Wastewater by Nanosized TiO_2/Diatomite Composites

作　　者：蒋静静[1] 丁士文[1] 尹东林[1] 董超[1] 裴亚康[1] 

机构地区：[1]河北大学化学与环境科学学院,保定071002

出　　处：《科学技术与工程》2012年第33期9129-9131,共3页Science Technology and Engineering

基　　金：国家自然科学基金(20806018)资助

摘　　要：用酸性红3R染料溶液模拟染料废水,在可见光强度为91 700μW/cm2,紫外线强度为499μW/cm2的太阳光照射下,研究了自制纳米TiO2/硅藻土复合材料的光催化性能。同时探讨了体系pH、光照时间以及染料初始浓度对光催化效果的影响。实验结果为:当体系溶液pH=3时,光照时间越长,染料初始浓度越低,光催化效果越好。The photocatalytic properties of homemade nanosized TiO2 diatomite composites are studied with acid red 3R as waste water under solar light irradiation which visible light intensity is 91 700 μW/cmz and ultravio- let strength is 499 μW/cm2, and the effect of pH, illumination time, and on catalytic performance were also inves- tigated in detail. Results indicate that the photocatalytic activity of composite exhibits excellent when pH is 3, the illumination time is longer, and initial concentration of dye is lower.

关 键 词：纳米TIO2 硅藻土 复合材料 光催化性能 

分 类 号：X703.1[环境科学与工程—环境工程]