环境工程学报2011，Vol.5Issue(5)：1003-1007,5.
微乳液法合成掺硫纳米TiO2及其光催化性能研究
Microemulsion synthesis of sulfur-doped TiO2 nanoparticles and its photocatalytic property
摘要
Abstract
Sulfur-doped TiO2 (S-TiO2) nanoparticles were synthesized by microemulsion method, using tetrabutyl titanate (Ti (OBu)4 ) and sulfourea as precursors and water-in-oil (W/O) microemulsions system of Triton X-lO0, n-hexanol, cyclohexane and ammonia water. The structure of the synthesized TiO2 nanoparticles was characterized. In addition, the photocatalytic property of the nanoparticles under UV-light irradiation was investigated by degradation of methyl orange solution. The results show that the calcination temperature affects greatly the photocatalytic degradation through its influence on the crystallite transformation and particle size of TiO2. The degradation rate increases rapidly with the increase of the calcination temperature, but decrease dramatically when the calcination temperature is too high. When the calcination temperature is 600 ℃ and the calcination time is 2 h, the degradation rate reaches the maximum value. In addition, the doping amount of S can improve the degradation obviously when the S amount is relatively low. The degradation rate decreases slowly when the S amount is too high, and the largest degradation rate can be obtained at a molar ratio of S/Ti = 1％. The degradation rate can be dramatically enhanced with the increase of catalyst load but decreases with the further increase of catalyst load. The optimum catalyst load is 1.5 g/L.关键词
纳米二氧化钛/掺硫/微乳法/光催化/甲基橙Key words
TiO2 nanoparticles/ sulfur doping/ microemulsion method/ photocatalysis/ methyl orange分类
化学化工引用本文复制引用
龙建新,陈拥军..微乳液法合成掺硫纳米TiO2及其光催化性能研究[J].环境工程学报,2011,5(5):1003-1007,5.基金项目
国家自然科学基金资助项目(50862001) （50862001）
教育部留学回国基金资助项目 （）
