Zn^(2+)-SiO_2-TiO_2三元复合催化剂的制备及其光催化降解性能

Preparation and photocatalytic activity of ternary composite catalyst: Zn^(2+)-SiO_2-TiO_2

采用溶胶-凝胶法制备了Zn2+-SiO2-TiO2三元复合纳米催化剂,并用DRS、FT-IR、XRD和SEM等对样品的形态和结构进行了表征,并以罗丹明B和刚果红染料的印染废水做探针反应,分别在紫外光和可见光照射下评价了其光催化性能.与TiO2一元纳米催化剂和Zn2+-TiO2、SiO2-TiO2二元纳米催化剂进行对比,Zn2+-SiO2-TiO2三元复合纳米催化剂对罗丹明B溶液(5 mg/L)和刚果红溶液(10 mg/L)都表现出较高的光催化降解性能,可见光下的降解率分别达到90%和83%.

Worsted fabrics was finished with novel silicon and fluorine finishing agent.The optimal wa ter-and oil-repellent finishing process of the worsted fabrics was obtained,using the orthogonal experiment design： 1∶30 of liquor ratio,pH=5,curing at 120 ℃ for 120 s.The tests results showed that the finished fabric had very good water repellent effect,and nearly had no change after many times of washing.Compared with the untreated fabric,the finished fabric had good permeability and gas permeability,and the breaking strength slightly increased,but the whiteness declined a little.