Ag-TiO_2复合膜的制备与催化性能研究  

Study on the Preparation and Characteristic of Ag-TiO_2 Composite Film

作　　者：沈昱[1] 钟俊波[1] 徐锁洪[1] 

机构地区：[1]大连铁道学院环境科学与工程系,辽宁大连116028

出　　处：《辽宁化工》2003年第11期474-476,共3页Liaoning Chemical Industry

摘　　要：以钛酸四丁酯为原料 ,载玻片为载体 ,用溶胶 -凝胶法制备Ag -TiO2 复合膜。利用复合膜在太阳光下对罗丹明B(RB)进行光催化脱色实验 ,结果表明 :最佳掺银量为 0 .5 % ,涂膜三层的复合膜活性最高 ,通过溶胶掺银所制备的膜催化活性较高 ,焙烧温度为 5 0 0℃ ;经 5h光照 ,对 1 0 0mL浓度为 1mg·L-1 、2 .5mg/LRB脱色率分别为 76 .6 7%、4 7.2 7% ;The preparation of Ag-TiO 2 composite film attached to the glass surface was studied by sol-gel technique using tetrabutyl titanate as material. The photocatalytic decolouration of Rhodamine B with the film under sunlight was investigated. The results showed that photocatalyst which coated three times was better than others, the optimum value of Ag doped was 0.5 %; the photoactivity of the Ag-TiO 2 composite film which was prepared by sol-gel technique was good ,the calcining temperature was 500℃; After five hours illuminating, Decolouration rates of two solutions whose concerntrations were 1 mg/L and 2.5 mg/L were 76.67 %, 47.27 % respectly in 100 mL; Utilizing the sunlight to degrade organic pollutants was workable.

关 键 词：钛酸四丁酯 溶胶-凝胶法 银-二氧化钛复合膜 光催化 脱色 降解 有机污染物 环境治理 

分 类 号：TQ134.11[化学工程—无机化工]