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›› 2008, Vol. 8 ›› Issue (5): 1026-1029.

• 材料工程专栏 • 上一篇    下一篇

Zr4+掺杂TiO2光催化剂的制备与表征

唐建军 邹原 邓爱华 李荣先   

  1. 深圳市工业节水与城市污水资源化技术重点实验室 深圳职业技术学院建筑与环境工程学院 深圳职业技术学院建筑与环境工程学院 深圳清华大学研究院
  • 收稿日期:2008-07-04 修回日期:2008-08-06 出版日期:2008-10-20 发布日期:2008-10-20
  • 通讯作者: 唐建军

Preparation and Characterization of Zr4+-doped TiO2 Photocatalyst

TANG Jian-jun ZOU Yuan DENG Ai-hua LI Rong-xian   

  1. School of Construction and Environmental Engineer, Shenzhen Polytechnic School of Construction and Environmental Engineering, Shenzhen Polytechnic School of Construction and Environmental Engineering, Shenzhen Polytechnic Research Institute of Tsinghua University
  • Received:2008-07-04 Revised:2008-08-06 Online:2008-10-20 Published:2008-10-20
  • Contact: TANG Jian-jun

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被引次数

2

摘要： 以ZrCl4及TiOSO4为前驱物，用尿素热分解共沉淀法制备了Zr4+掺杂TiO2光催化剂Zr/TiO2，并用XRD, TEM, BET, FT-IR等表征了其物相及光催化性能. 结果表明，Zr4+掺杂使TiO2纳米晶粒细化(粒径14~17 nm)，比表面积增大，同时有效抑制了TiO2从锐钛矿到金红石的晶型转变；Zr4+掺杂使TiO2表面的羟基数量增加，改善了对苯酚的吸附性能；Zr4+掺杂提高了TiO2的光催化活性，以4%Zr/TiO2作光催化剂，反应100 min后对苯酚的降解率达100%，TOC去除率超过80%.

关键词: 光催化, Zr4+掺杂, 苯酚, TiO2

Abstract: Zr4+-doped TiO2 photocatalyst was prepared by urea thermal decomposition and homogeneous co-precipitation method using TiOSO4 and ZrCl4 as precursors, the phase and photocatalytic activity of Zr/TiO2 were characterized by XRD, TEM, BET and FT-IR techniques. XRD results indicate that Zr4+-doped TiO2 has small crystal size (14 to 17 nm) and large specific surface area, and phase transformation from anatase to rutile is effectively inhibited. FT-IR results indicate that the presence of Zr4+-dopet in TiO2 accelerates its surface hydroxyl groups, and improves the adsorption characteristics of phenol. Photocatalysis results indicate that Zr4+ doping increases photocatalytic activity of TiO2, the degradation rate of phenol and removal rate of TOC after 100 min reaction reach as high as 100% and 80% respectively with 4%Zr/TiO2 photocatalyst.

Key words: photocatalysis, Zr4+ doping, phenol, TiO2

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