ZrO_2-TiO_2复合光催化剂光催化降解三氯生的试验研究  

PHOTOCATALYTIC DEGRADATION OF TRICLOSAN BY COMPOSITE CATALYST: ZrO_2-TiO_2

作　　者：詹凤凌[1] 邓慧萍[1] 韩旭[1] 陈夏彬[1] 

机构地区：[1]同济大学长江水环境教育部重点实验室,上海200092

出　　处：《水处理技术》2012年第5期63-66,共4页Technology of Water Treatment

基　　金：水体污染控制与治理科技重大专项资助项目(2008ZX07425-007)

摘　　要：采用溶胶凝胶浸渍法,制备了ZrO2-TiO2的复合半导体光催化剂TZ500-1.0,采用SEM和XRD对TZ500-1.0进行表征。以三氯生(TCS)为目标污染物,选取TCS初始质量浓度、TZ500-1.0投加量、pH和温度4个主要试验因素,用正交试验考察了TZ500-1.0的光催化性能。结果表明,TZ500-1.0的光催化活性很高,并得出了降解TCS的最优试验条件:TCS初始质量浓度35 mg/L,TZ500-1.0投加量0.1 mg/L,pH为11,温度为45℃,最高去除率为92.11%。其中,催化剂投加量是首要影响因素。Sol-gel impregnation method was used to synthesize the composite catalyst TZ500-1.0 with ZrO2 and TiO2,The samples were characterized by XRD and SEM techniques.A orthogonal experiment was designed to test the photocatalytic performance of TZ500-1.0 with a goal pollution of triclosan（TCS）;Selection of four major factors： initial concentration of TCS,TZ500 1.0 dosage,pH value and temperature.The results show that the photocatalytic activity of TZ500 1.0 is high and the optimum experimental condition is： the initial concentration of TCS is 35 mg/L,TZ500 1.0 dosage is 0.1 mg/L,pH value is 11,temperature is 45 ℃,the highest removal rate is 92.11%.Among the four factors,catalyst dosage is the primary influencing factor.

关 键 词：光催化 TZ500-1.0 三氯生 正交试验 

分 类 号：TQ031.7[化学工程] X703.1[环境科学与工程—环境工程]