河北大学学报(自然科学版) ›› 2015, Vol. 35 ›› Issue (2): 122-127.DOI: 10.3969/j.issn.1000-1565.2015.02.003

• 物理学 • 上一篇    下一篇

稀土离子La3+修饰纳米TiO2-xFx光催化性能研究

马晓燕,张荣香,李玲,赵晓辉   

  1. 河北省光电信息材料重点实验室,河北大学物理科学与技术学院,河北保定,071002
  • 收稿日期:2014-10-10 修回日期:2014-12-12 出版日期:2015-03-25 发布日期:2015-03-25
  • 通讯作者: 赵晓辉
  • 作者简介:马晓燕(1980-),女,宁夏银川人,河北大学助理实验师
  • 基金资助:
    国家自然科学基金项目(21201053)、河北省教育厅重点基金项目(ZD 20131089)

Photocatalytic properties of rare earth La3+ ion modified Nano-TiO2-xFx

MA Xiaoyan, ZHANG Rongxiang, LI Ling,ZHAO Xiaohui   

  1. Key Laboratory of Hebei Optic-electronic Information Material, College of Physics Science and Technology, HebeiUniversity, Baoding 071002, China
  • Received:2014-10-10 Revised:2014-12-12 Online:2015-03-25 Published:2015-03-25
  • Contact: ZHAO Xiaohui

摘要: 以四氯化钛、硝酸镧、硫脲、氟化铵、氨水等为主要实验药品,采用常温络合-控制水解法制备具有可见光催化活性的La离子修饰纳米TiO2-xFx光触媒乳液.使用XRD、UV-Vis、纳米激光粒度分析仪等表征了样品的物相、粒径、组成、光吸收等性质.在光照下,考察了La修饰纳米TiO2-xFx光触媒乳液降解酸性红3R的光催化性能.结果表明,当La掺杂浓度为0.1%,F掺杂浓度为0.3%,体系pH值为6,回流时间为15min,样品乳液对酸性红3R染料的降解率达到95%以上.

关键词: La修饰, 纳米TiO2-xFx, 常温络合-控制水解, 光催化

Abstract: The La ion-modified nanometer TiO2-xFx photocatalyst emulsion with visible light photocatalytic activity was synthesized by using complexation-controlled hydrolysis at room temperature with titanium tetrachloride, lanthanum nitrate, thiourea, ammonium fluoride, ammonia as raw materials. The sample phase, particle size, composition, and light absorption properties were characterized by using XRD, UV-Vis, and Nanometer laser particle size analyzers. Under the sunlight, the photocatalytic performance of La-modified TiO2-xFx emulsion through degradating acid red 3R dye was investigated. The results show that when the La doping concerntration is 0.1%, F doping concerntration is 0.3%, the pH value is 6, and reflux time is 15 min, the degradation of acid red 3R dye is more than 95%.

Key words: La modified, nanometer-TiO2-xFx, complexation-controlled hydrolysis at room temperature, photocatalytic

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