非水沉淀法制备纳米氧化钛及其光催化性能研究（英文）  

Anatase TiO_2 Nanoparticles: Facile Synthesis via Non-aqueous Precipitation and Photocatalytic Property

作　　者：江峰[1,2] 于云 冯爱虎 于洋[1] 米乐 宋力昕[1] JIANG Feng;YU Yun;FENG Ai-Hu;YU Yang;MI Le;SONG Li-Xin(Key Laboratory of Inorganic Coating Materials CAS,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院上海硅酸盐研究所,中国科学院特种无机涂层重点实验室,上海200050 [2]中国科学院大学,北京100049

出　　处：《无机材料学报》2018年第10期1136-1140,共5页Journal of Inorganic Materials

基　　金：National Natural Science Foundation of China(51162013,51362014,51662019)

摘　　要：采用非水沉淀工艺制备了锐钛矿型纳米氧化钛(TiO_2)。在冰醋酸的催化作用下,钛酸丁酯在乙醇中发生非水解反应。冰醋酸的引入增加了钛酸丁酯中Ti–O键和C–O键的极性,进而促进其在溶剂乙醇中发生非水解脱醚缩聚反应形成Ti–O–Ti键合。经过80℃回流24h,Ti–O–Ti键重排形成锐钛矿型纳米TiO_2。其粒径为5～20nm;比表面积为169.4 m^2/g。非水沉淀法制备的纳米氧化钛分散性良好,光催化性能优异。紫外光照2 h,纳米氧化钛对甲基橙的降解率达99.81%,具有良好的污水处理应用前景。A facile strategy for anatase titanium dioxide （TiO2） nanoparticle preparation was proposed via a non-aqueous precipitation method. With the aid of glacial acetic acid, tetrabutyl titanate underwent non-hydrolytic reaction in solvent ethanol. Glacial acetic acid increased polarity of Ti-O and C-O bonds of tetrabutyl titanate, and promoted non-hydrolytic de-etherization poly condensation reaction to form Ti-O-Ti bond in the solvent. After refluxing at 80℃ for 24 h, the Ti-O-Ti bond was rearranged to form anatase TiO2 nanoparticles with the particle size of 5 nm-20 nm and specific surface area of 169.4 m^2/g, which exhibited good dispersion and excellent photocata- lytic activity. The degradation rate against methyl orange under ultraviolet radiation for 2 h reached 99.81%, show- ing promising prospect in wastewater treatment process.

关 键 词：TIO2 非水沉淀法 光催化性能 低温合成 

分 类 号：TQ174[化学工程—陶瓷工业]