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.
出处
《科学技术与工程》
北大核心
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
关键词
纳米TIO2
硅藻土
复合材料
光催化性能
nano-titanium dioxide
diatomite
composite material
photocatalysis
