铁酸锌掺杂对二氧化钛结构相变及光催化性能的影响

高等学校化学学报 ›› 2004, Vol. 25 ›› Issue (10): 1875.

铁酸锌掺杂对二氧化钛结构相变及光催化性能的影响

袁志好¹, 孙永昌¹, 王玉红¹, 别利剑¹, 段月琴¹, 张立德²

1. 天津理工大学材料科学与工程学院纳米材料与技术研究中心, 天津300191;
2. 中国科学院固体物理研究所, 合肥230031

收稿日期:2003-12-15 出版日期:2004-10-24 发布日期:2004-10-24
基金资助:
国家自然科学基金(批准号:20171027)资助

Effect of ZnFe₂O₄ Dopant on Structural Phase Transformation and Photocatalytic Activity of TiO₂ Nanopowders

YUAN Zhi-Hao¹, SUN Yong-Chang¹, WANG Yu-Hong¹, BIE Li-Jian¹, DUAN Yue-Qin¹, ZHANG Li-De²

1. Nanomaterials & Nanotechnology Research Center, School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300191, China;
2. Institute of Solid State Physics, Chinese Academy of Sciences, Hefei 230031, China

Received:2003-12-15 Online:2004-10-24 Published:2004-10-24

摘要/Abstract

摘要： 分别采用共沉淀法和溶胶-凝胶法制备铁酸锌和二氧化钛纳米粉体,较系统地研究了铁酸锌纳米掺杂对二氧化钛“锐钛矿→金红石”的结构相变及光催化性能的影响.结果表明,适量铁酸锌的掺杂可促进二氧化钛的结构相变,显著提高其光催化活性,在最佳掺杂浓度时,其光催化降解苯酚的效率可以提高2～3倍.

关键词: 光催化, 二氧化钛纳米粉, 铁酸锌掺杂, 结构相变, 苯酚降解

Abstract: ZnFe₂O₄ and TiO₂ nanopowders were prepared by coprecipitation and sol-gel methods, respectively. Influence of ZnFe₂O₄ dopant on the anatase-to-rutile phase transformation of TiO₂ was investigated, and the photocatalytic activity of ZnFe₂O₄ doped TiO₂ nanopowders was evaluated by phenol degradation under sunlight irradiation. It was found that the phase transformation could be strongly promoted by doping ZnFe₂O₄ component in TiO₂ nanopowders, and an increase in the activity by a factor of 2₃ relative to pure TiO₂ nanomaterials was obtained under the optimum conditions.

Key words: Photocatalysis, Titania nanopowders, ZnFe₂O₄ dopant, Structural phase transformation, Phenol degradation

中图分类号:

TrendMD:

袁志好, 孙永昌, 王玉红, 别利剑, 段月琴, 张立德. 铁酸锌掺杂对二氧化钛结构相变及光催化性能的影响. 高等学校化学学报, 2004, 25(10): 1875.

YUAN Zhi-Hao, SUN Yong-Chang, WANG Yu-Hong, BIE Li-Jian, DUAN Yue-Qin, ZHANG Li-De . Effect of ZnFe₂O₄ Dopant on Structural Phase Transformation and Photocatalytic Activity of TiO₂ Nanopowders. Chem. J. Chinese Universities, 2004, 25(10): 1875.

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