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纳米TiO₂的晶相控制及其光催化活性研究

Study of Crystal Form Controlled and Photocatalytic Activity of Nano-TiO₂ Prepared by Sol-gel Method

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【Author】 HE Du-liang~1, WANG Chuan-hai~1, XIA Ming-fang~2, LUAN Shao-hai~1, MIAO Qi-long~1 (1.Department of Environmental Sciences, Naijing Institute of Metorology, Nanjing 210044; 2. Institute of Environmental Sciences of Jiangsu Province, Nanjing 210036)

【机构】南京气象学院环境科学系；江苏省环境科学研究院；南京气象学院环境科学系南京210044；南京210044；南京210036；南京210044；

【摘要】采用sol gel法以钛酸丁酯为前驱物制备纳米TiO2 粉体 ,以TG DTA、XRD、TEM进行表征分析 ,研究了不同煅烧条件对纳米TiO2 粉体的晶相变化、微晶生长、粒径大小的影响 ,并用自制纳米TiO2 光催化降解四氟苯甲酸 ,研究了不同煅烧条件下纳米TiO2 的光催化活性。更多还原

【Abstract】 Tettrabutry titanate as precursors, the Nano-TiO₂ powder was prepared by sol-gel method . TG-DTA,XRD and TEM was used to characterize the Nano-TiO₂ powder. The influence of crystal changed,growth of crystallite and particle size at different calcinating condition was reviewed. The photodegradition efficiency of Nano-TiO₂ at different calcinating condition was studied.更多还原