人工晶体学报2017，Vol.46Issue(4)：616-620,633,6.
不同晶型TiO2的制备与光催化性能研究
Preparation and Photocatalytic Activity of TiO2 with Different Crystal Structures
摘要
Abstract
The nanocrystalline TiO2 with different crystal structures were prepared by sol-gel method at different temperatures.The crystal structure, morphology, element composition and chemical state of the samples were analyzed by XRD, SEM, EDS and XPS, respectively.The results show that TiO2 form anatase crystal structure at the temperature of 400 ℃ and 500 ℃, form anatase / rutile mixed crystal structure at the temperature of 600 ℃, and form rutile crystal structure at the temperature of 700 ℃.The single particle presents approximate spherical morphology.The rhodamine B was employed as the target pollutant to evaluate the photocatalytic activity of the samples.The results reveal that TiO2 which is annealed at 400 ℃ shows the highest photocatalytic activity and reaction rate constant.The degradation rate and the reaction rate constant are 94.6% and 0.969 h-1 after illumination for 3 h.关键词
TiO2/溶胶凝胶法/热处理/光催化性能Key words
TiO2/sol-gel method/heat treatment/photocatalytic activity分类
化学化工引用本文复制引用
朱晓东,孔清泉,冯威,伍洋婷,朱然苒,裴玲秀..不同晶型TiO2的制备与光催化性能研究[J].人工晶体学报,2017,46(4):616-620,633,6.基金项目
国家自然科学基金(11572057) （11572057）
四川省教育厅科研项目(16ZB0436,16ZB0389) （16ZB0436,16ZB0389）
成都市科技惠民技术研发项目(2015-HM01-00385-SF) （2015-HM01-00385-SF）
