安徽农业科学2011，Vol.39Issue(19)：11737-11739,3.
Fe3+掺杂纳米TiO2的表征及其光催化性能的研究
Characterization of Nanoparticle TiO2 Doped with Fe3 + and Research on Its Photocatalytic Activity
摘要
Abstract
[ Objective]The study aim to enhance the response to visible light and photocatalytic activity of TiO2. [ Method] The nanometer TiO2 powder doped with Fe3+ was prepared by so-gal process and its photocatalytic activity was studied. [ Result]The TiO2 doped with Fe3+ showed obvious characteristic diffraction peaks of TiO2 after it was calcinated at 450 ℃ ,the peak form was sharp,crystallization was well and there was no new phase of Fe3+. As the doping amount of Fe3+ was increased,the particle diameter of TiO2 was decreased gradually. When the doping amount of Fe3+ was 0.4％ ,the particle diameter of TiO2 was smallest and it was decreased to 45％ of the paricle diameter of pure TiO2. The doping of Fe3+ inihibted the transform from anatase to rutile. As the calcination temperature was increased ,the particle diameter of TiO2 was increased gradually. All the TiO2 prepared by sol-gal process was nanometer and most of them were spheroidal particles. The distribution of pure TiO2 particles was not very uniform and their agglomeration was obvious. The distribution of TiO2 particles doped with Fe3+ was uniform and there was no agglomeration. The doping of Fe3 + enhanced the degradation efficiency of TiO2 under UV lamp and sunlight to different degrees. [ Conclusion ] The nanometer TiO2 doped with Fe3+ ,which was prepared by sol-gal process,refined grain of crystal and inhibited the transform from anatase to rutfle.关键词
TiO2/掺杂/腐殖酸(HA)Key words
TiO2 /Doping/Humic acid (HA)分类
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刘桢,鲍治宇,董延茂,卢斌..Fe3+掺杂纳米TiO2的表征及其光催化性能的研究[J].安徽农业科学,2011,39(19):11737-11739,3.
