砂子负载纳米TiO_2薄膜光降解有机污染物的研究  

Study on the photooxidation degradation of organic pollutant by using supported catalysts nanometer-sized TiO_2 on sand

作　　者：任朝华[1] 张光华[1] 卫志贤[2] 

机构地区：[1]陕西科技大学化学与化工学院,陕西咸阳712081 [2]西北大学化工学院,陕西西安710069

出　　处：《工业水处理》2003年第10期42-44,共3页Industrial Water Treatment

摘　　要：从光化学的角度,对砂子负载纳米二氧化钛薄膜,光催化剂降解工业污水中的有机污染物的过程进行分析与研究,探讨了多种因素对光降解的影响。实验显示在紫外光和纳米二氧化钛共同存在下,能对工业污水进行处理,砂子负载纳米二氧化钛进行光催化降解的最佳条件:纳米二氧化钛的质量分数为2%,焙烧温度约300℃,工业污水的pH为6.0～7.0。It has been analysed and studied that the organic pollutant in industrial wastewater is degraded with supported photocatalysts nanometer-sized TiO 2 on sand at the angle of photocatalytical chemistry,and the effects of many facts on photodegradation is discussed.By the experiment ,it is concluded that the organic pollutant in the industrial wastewater can be treated with the experimental condition of both ultraviolet(UV)and nanometer-sized titanium dioxide.And the optimum conditions to photocatalyzed degradation with supported catalysts nanometer-sized titanium dioxide on sand are:the nanometer-sized titanium dioxide percentage is about 2.0g TiO 2 particle per100g sand,the baked temperature of catalysts is about 300℃and the best pH range of indus-trial wastewater is6.0～7.0.

关 键 词：砂子 负载 纳米TIO2薄膜 光降解 有机污染物 工业污水处理 

分 类 号：X783[环境科学与工程—环境工程] X703.5