掺铜TiO2光催化剂光催化氧化还原性能的研究

doi:10.7517/j.issn.1674-0475.2005.05.333

影像科学与光化学 ›› 2005, Vol. 23 ›› Issue (5): 333-339.DOI: 10.7517/j.issn.1674-0475.2005.05.333

掺铜TiO₂光催化剂光催化氧化还原性能的研究

吴树新^1,2,3, 尹燕华², 何菲¹, 秦永宁¹

1. 天津大学, 化工学院, 天津, 300072;
2. 第718研究所, 河北, 邯郸, 056027;
3. 唐山师范学院化学系, 河北, 唐山, 063000

收稿日期:2005-03-07 修回日期:2005-06-03 出版日期:2005-09-23 发布日期:2005-09-23

Photocatalytic Redox Performance of Copper Doped TiO₂ Photocatalyst

WU Shu-xin^1,2,3, YIN Yan-hua², HE Fei¹, QIN Yong-ning¹

1. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, P.R. China;
2. The 718th Research Institute, Handan 056027, Hebei, P.R. China;
3. Tangshan Teacher’s College, Tangshan 063000, Hebei, P.R. China

Received:2005-03-07 Revised:2005-06-03 Online:2005-09-23 Published:2005-09-23

摘要/Abstract

摘要： 利用浸渍法制备了掺铜二氧化钛光催化剂,分别以乙酸降解和二氧化碳还原反应为探针,研究了催化剂的光催化氧化光催化还原性能.结果表明,铜掺杂能显著提高催化剂的光催化性能;结合光电子能谱、X光衍射分析等物理表征结果,对铜掺杂改性机制进行了讨论.

关键词: 光催化, 乙酸, 铜离子掺杂, XPS, TiO₂, 二氧化碳还原

Abstract: Copper doped titanium dioxide was prepared by impregnation of TiO₂ materials with aqueous solution of Cu(NO₃)₂ under ultrasonic irradiation, followed by calcinations at 450 ℃. The catalysts were characterized by X-ray diffraction(XRD) and X-ray photoelectron spectroscopy(XPS). The photocatalytic activity of the doped catalysts were evaluated using the reaction of photocatalytic oxidation of acetic and photocatalytic reduction of CO₂. The results show that the photocatalytic activity can be significantly improved by doping copper. The raised content of adsorbed oxygen and coexistence of Cu²⁺ and Cu⁺ are likely to be two of the reasons responsible for the improved photocatalytic activity.

Key words: photocatalytic, acetic acid, copper ion doping, XPS, TiO₂, CO₂ reduction

中图分类号:

吴树新, 尹燕华, 何菲, 秦永宁. 掺铜TiO₂光催化剂光催化氧化还原性能的研究[J]. 影像科学与光化学, 2005, 23(5): 333-339.

WU Shu-xin, YIN Yan-hua, HE Fei, QIN Yong-ning. Photocatalytic Redox Performance of Copper Doped TiO₂ Photocatalyst[J]. Imaging Science and Photochemistry, 2005, 23(5): 333-339.

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[1] 杨秋华.纳米钙钛矿光催化性能的研究[D].博士学位论文,天津大学化工学院,2002.

掺铜TiO₂光催化剂光催化氧化还原性能的研究

Photocatalytic Redox Performance of Copper Doped TiO₂ Photocatalyst

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