纳米自洁涂料的制备及其对茜素红的降解研究  

Preparation of Nano Self-Clean Coatings and Its Functions on Degradation of Alizarin Red

作　　者：付文[1] 刘安华[2] 黄军左[1] 

机构地区：[1]茂名学院化工与环境工程学院,广东茂名525000 [2]华南理工大学材料学院,广州510640

出　　处：《涂料工业》2010年第1期20-23,共4页Paint & Coatings Industry

基　　金：国家自然科学基金(No.29974009)资助项目

摘　　要：以钛酸四丁酯、正硅酸乙酯为前驱体,冰醋酸为水解抑制剂,用溶胶-凝胶法制备了纳米TiO2/SiO2复合粒子。将复合粒子按一定比例添加到醇酸清漆中,制备出自清洁涂层。光催化研究表明:SiO2负载可明显提高涂层光催化活性,添加了2%(质量分数,下同)TiO2/SiO2粒子的涂层对茜素红的降解性能最好。利用气质联用仪对降解产物进行了分析。Nano TiO2/SiO2 compound particles was prepared with sol - gel process using tetraethylorthosilieate and tetrabutylorthotitanate as precursors and glacial acetic acid as depressor. Which with a certain proportion was added into alkyd varnish to prepare the self-clean coatings. The photocatalysis investigation indicated that the photocatalytic activity of coatings were improved significantly by loading SiO2 , the coatings added with 2 percent （%） TiO2/SiO2 particles exhibited the best decomposition performance for alizarin red. The decomposition products were analyzed by GC -MS.

关 键 词：纳米TiO2/SiO2 溶胶-凝胶法 茜素红 光催化 

分 类 号：TQ630.7[化学工程—精细化工]