掺Fe3+对载Ag纳米TiO2光催化性能的改良

韩俊, 张苏娟, 陆治国, 王英杰

韩俊, 张苏娟, 陆治国, 王英杰. 掺Fe3+对载Ag纳米TiO2光催化性能的改良[J]. 应用光学, 2010, 31(5): 718-723.
引用本文: 韩俊, 张苏娟, 陆治国, 王英杰. 掺Fe3+对载Ag纳米TiO2光催化性能的改良[J]. 应用光学, 2010, 31(5): 718-723.
shu
HAN Jun, ZHANG Su-juan, LU Zhi-guo, WANG Ying-jie. Doping Fe3+ to nano-Ag TiO2 for photocatalyticperformance improvement[J]. Journal of Applied Optics, 2010, 31(5): 718-723.
Citation: HAN Jun, ZHANG Su-juan, LU Zhi-guo, WANG Ying-jie. Doping Fe3+ to nano-Ag TiO2 for photocatalyticperformance improvement[J]. Journal of Applied Optics, 2010, 31(5): 718-723.
shu

掺Fe3+对载Ag纳米TiO2光催化性能的改良

  • 1.

    西北大学光子学与光子技术研究所,陕西西安710069;

  • 2.

    西北大学物理系,陕西西安710069

详细信息
    通讯作者:

    韩俊(1984-)，男，陕西西安人，硕士研究生，主要从事纳米材料方面的研究工作。

  • 中图分类号: TN102；O484.4

Doping Fe3+ to nano-Ag TiO2 for photocatalyticperformance improvement

  • 1.

    Institute of Photonics and Photo-Technology,Northwest University,Xi’an 710069,China;

  • 2.

    Department of Physics,Northwest University,Xi’an 710069,China

摘要

    摘要
  • 摘要: 为研究掺杂不同mol分数的Ag+，Fe3+对TiO2薄膜光催化性能的影响，采用溶胶-凝胶法分别制备了掺杂不同质量分数的Ag+，Fe3+及其共掺杂的纳米TiO2光催化杀菌膜。以大肠杆菌为光催化抗菌的反应模型，对TiO2薄膜光催化性能进行了评价。进而采用XRD，Uv-Vis对复合掺杂薄膜的特性进行了测试，以分析Ag+，Fe3+对影响TiO2薄膜的光催化杀菌性能的内在机理。结果表明：在荧光灯照射下，以Ag+，Fe3+各自最佳掺杂量Ag/Ti+=0.05%，Fe/Ti=0.1%，共同掺入TiO2中时，共掺杂杀菌率最高，并且共掺杂有良好的光催化分解能力。所得TiO2晶型基本为锐钛矿型，通过Uv-Vis可以看出共掺杂在可见光区具有良好的吸收性能。Fe3+是由于拓展了TiO2的吸收范围，而Ag+是由于正离子有效地抑制光生电子空穴的复合,它们二者共同合作从而提高了TiO2薄膜的光催化性能。共掺杂相对于单掺杂有着更优异的性能，是进一步的研究方向。
    Abstract: The effects of Ag and Fe doping contents on photocatalytic performance of the TiO2 thin film were studied. Ag and Fe doping and co-doping contents on nano-TiO2 photocatalytic bactericidal films were prepared by sol-gel method. The photocatalytic activity of TiO2 films was evaluated by the sterilizing rate of the E.coli. The microstructure and UV absorb ability of films were measured by using XRD and Uv-Vis technology so as to analyze the intrinsic mechanism of Ag and Fe doping the photocatalytic TiO2 thin films. Results show that, for fluorescent light irradiation, optimal doping amounts for Ag/TiO2 and Fe3/TiO2 are 0.05%, 0.1%, respectively. The co-doping of them shows a good photocatalytic effect on the fluorescent light irradiation. And co-doping has a good ability of photocatalytic decomposition. The as-prepared particles had content of anatase phase. By Uv-Vis, we can see co-doping in the visible area has a good absorption property. Fe3+doping expanding the scope of the absorption of TiO2 and Ag+ effecti-cnvely inhibits the photo-generated electron hole recombination. All this makes filmsphotocatalytic ability enhanced. Co-dopeds superiority over the single-doped is to be investigated in the future.
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  • 刊出日期:  2010-09-14

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