东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2007, Vol. 28 ›› Issue (9): 1333-1337.DOI: -

• 论著 • 上一篇    下一篇

稀土掺杂TiO_2光催化抗菌材料的制备与性能研究

姜莉;刘奎仁;简小琴;王恩德;   

  1. 东北大学资源与土木工程学院;东北大学材料与冶金学院;东北大学材料与冶金学院;东北大学资源与土木工程学院 辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004;辽宁沈阳110004
  • 收稿日期:2013-06-24 修回日期:2013-06-24 出版日期:2007-09-15 发布日期:2013-06-24
  • 通讯作者: Jiang, L.
  • 作者简介:-
  • 基金资助:
    国家自然科学基金资助项目(50104003)

Preparation and characteristics of RE-doped TiO2 photocatalytic antibacterial materials

Jiang, Li (1); Liu, Kui-Ren (2); Jian, Xiao-Qin (2); Wang, En-De (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China; (2) School of Materials and Metallurgy, Northeastern University, Shenyang 110004, China
  • Received:2013-06-24 Revised:2013-06-24 Online:2007-09-15 Published:2013-06-24
  • Contact: Jiang, L.
  • About author:-
  • Supported by:
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摘要： 采用溶胶-凝胶法并结合旋转涂膜法制备了稀土掺杂光催化抗菌薄膜(Ce/TiO2,Pr/TiO2,Gd/TiO2,Dy/TiO2,Y/TiO2,Eu/TiO2),研究了烧结制度、烧结温度、烧结时间、稀土掺杂量等因素对材料光催化抗菌性能的影响,分别确定了最佳制备工艺条件.结果表明,除Ce掺杂TiO2薄膜含有极少量金红石型TiO2外,其余全部由单一锐钛矿型TiO2构成,薄膜表面均存在缺陷;RE/TiO2光催化抗菌薄膜对大肠杆菌平均杀菌率皆在90%以上,较纯TiO2杀菌率(34%)有明显提高.稀土元素掺杂显著提高了光催化材料对可见光的响应.材料经反复使用和高温、高压、冲刷等处理,薄膜完整不脱落,始终有很...

关键词: 光催化, 抗菌性能, 溶胶-凝胶法, TiO2薄膜, 稀土掺杂

Abstract: The RE-doped TiO2 such as i.e. Ce/TiO2, Pr/TiO2, Gd/TiO2, Dy/TiO2, Y/TiO2 and Eu/TiO2, photocatalytic antibacterial films were prepared by sol-gel method in combination with spinning coating process. The effects of sintering schedule, temperature, time and doping amount on their bactericidal potency are investigated to determine the optimum conditions for preparing the six types of RE-doped TiO2 films mentioned above. The results revealed that the structures of all RE/TiO2 films are made up singly of anatase, except for the Ce/TiO2 films which contain few rutile in addition to anatase. However, all of their surfaces are found defective obviously. Comparing with the pure TiO2 films whose average bactericidal rate to E. Coli is 34%, that of all the above six films are over 90% because the RE doping improves greatly the photocatalytic materials in response to visible light. The films have durably high bactericidal rate and stability even after used repeatedly and treated or washed at high temperature and under high pressure without peel-off found, thus providing high performance and good prospects in application.

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