在线阅读 --自然科学版 2019年6期《反应时间和温度氟掺杂TiO2结构及光催化性能的影响》
反应时间和温度氟掺杂TiO2结构及光催化性能的影响--[在线阅读]
阎文静1, 张艳峰2
1. 河北化工医药职业技术学院 化学与环境工程系, 河北 石家庄 050026;
2. 河北师范大学 化学与材料科学学院, 河北 石家庄 050024
起止页码: 504--509页
DOI: 10.13763/j.cnki.jhebnu.nse.2019.06.009
摘要
以TiCl4为钛源,以NaF为氟源,采用水热法在不同条件制备了F掺杂TiO2粉体.结果表明,F元素的掺杂使锐钛矿型含量增多.随着反应温度升高、反应时间的延长,产物中锐钛矿型含量增多.F掺杂促进产物晶粒的生长,并且F进入TiO2晶格中改变了晶胞结构.F掺杂减小了TiO2带隙宽度,提高了光利用率.延长反应时间制备的F掺杂TiO2比纯TiO2具有更好的光催化性能.

Effects of Reaction Time and Temperature on the Structne and Photocatalytic Perpormance of Fluorine Doped TiO2
YAN Wenjing1, ZHANG Yanfeng2
1. Department of Chemical and Environmental Engineering, Hebei Chemical and Pharmaceutical College, Hebei Shijiazhuang 050026, China;
2. College of Chemistry and Material Sciences, Hebei Normal University, Hebei Shijiazhuang 050024, China
Abstract:
F-doped TiO2 powders have been prepared by hydrothermal method using TiCl4 and NaF on different conditions.The results reveal that doping of F element increases the content of anatase.The content of anatase in product increases with higher reaction temperature and the longer reaction time.F element promotes the growth of product grains,and F enters into TiO2 lattice,which changes the lattice structure.F-doping TiO2 has a narrower band gap than pure TiO2,which improves light utilization.F-doped TiO2 prepared with longer reaction time has better property of photocatalytic than pure TiO2.
Key words: F-doped; TiO2; anatase; red shift;

收稿日期: 2019-05-28
基金项目: 河北省高等学校科学技术研究项目(Z2018006);河北师范大学校级项目(L2017K05);河北省教育厅科学研究项目(ZD2018019)

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