Characteristics and properties of surface coated nano-TiO_2

作     者：高家诚 邹健 谭小伟 王勇 

作者机构：College of Materials Science and EngineeringChongqing University 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2006年第7卷第6期

页      面：1252-1258页

核心收录：

学科分类：07[理学] 0806[工学-冶金工程] 070205[理学-凝聚态物理] 08[工学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0703[理学-化学] 0813[工学-建筑学] 0814[工学-土木工程] 0702[理学-物理学] 

基　　金：Project(2002126) supported by the Chongqing Science Committee China 

主　　题：nano-TiO2 surface modification coating weatherability dispersing 

摘      要：Nano-TiO2 was coated with A12O3,SiO2 and silane coupling agent by chemical liquid *** coating was characterized by Raman spectroscopy,XRD,TEM and *** coating content and anti-ultraviolet capacity of nano-TiO2 were measured by XRF and UV-vis *** results show that dense coatings containing 5% Al2O3 or SiO2 can be obtained by mixing slurry at pH 10,adding coating reagent and neutralization reagent into the slurry for 60 min at 85?95 ℃,and finally aging for 120 *** SiO2 was coated on the surface of nano-TiO2 to form silica gel polymer with a Ti—O—Si bond,while aluminum compound exists in the form of AlOOH and part Al(OH)*** integrated dense film can shield photocatalysis *** inorganic coating film can increase the wettability for xylene and stability in *** surface modification of nano-TiO2 will not impair its ability for anti-ultraviolet radiation,and more short band ultraviolet radiation can be *** addition,the optimal coating amount of silane coupling agent should be less than 3% and the best wettability for xylene can be reached when the amount is 1.2%.