活性白土-Bi_2WO_6光催化剂的制备及其光催化降解含酚废水  

Preparation and application of activated white clay-Bi_2WO_6 photocatalyst for degradation of phenol-containing wastewater

作　　者：付红普[1] 宜沛沛 高晓明[2] 付峰[2] 李稳宏[3] 

机构地区：[1]华东理工大学工程设计研究院有限公司,上海200237 [2]延安大学化学与化工学院,陕西省化学反应工程重点实验室,陕西延安716000 [3]西北大学化工学院,陕西西安710069

出　　处：《工业催化》2015年第1期69-74,共6页Industrial Catalysis

基　　金：陕西省科技厅项目(2014K10-04);延安市科技局项目(2012kg-09);陕西省教育厅项目(2013JK0689);延安大学自然科学基金项目(YDQ2013-17)

摘　　要：采用水热法合成纳米Bi2WO6粉末,将其负载于陕北志丹县白土上,制得用于光催化降解含酚废水的活性白土-Bi2WO6负载型可见光催化剂,并对其进行XRD和UV-Vis DRS表征。以含酚废水为目标污染物,通过单因素试验和正交试验方法研究活性白土-Bi2WO6光催化剂催化降解含酚废水的性能。结果表明,在活性白土-Bi2WO6光催化剂用量0.5 mg·L-1、过氧化氢用量0.1 m L·m L-1和400 W金卤灯光照120 min条件下,含酚废水降解率可达98.29%,且重复使用2次后,仍具有较好的催化效果。Nano Bi2 WO6 powder was prepared by hydrothermal synthesis method,and then activated white clay-Bi2 WO6 photocatalyst for degradation of phenol-containing wastewater was prepared by loading nano Bi2 WO6 powder on activated white clay of Zhidan in north of Shaanxi province. The activated white clay-Bi2 WO6 photocatalyst was characterized by XRD and UV-Vis DRS. Using the simulated phenol-containing wastewater as the aimed pollutants,the performance of the activated white clay-Bi2 WO6 photocatalyst for degradation of containing phenol wastewater under visible light was investigated by single factor and orthogonal tests. The results showed that the degradation rate of simulated phenol-containing wastewater on the activated white clay-Bi2 WO6 photocatalyst reached 98. 29% under the optimal condition as follows：activated white clay-Bi2 WO6 photocatalyst amount 0. 5 mg·L^ - 1 ,H2 O2 dosage 0. 1 mL·mL ^- 1 ,mercury lamp 400 W,and illumination time l20 min. After repeated use of 3 times,the activated white clay-Bi2 WO6 photocatalyst still exhibited better catalytic effect.

关 键 词：催化化学 活性白土-Bi2WO6光催化剂 光催化 含酚废水 降解 

分 类 号：O643.36[理学—物理化学] X703.5[理学—化学]