Electrospun nanofibers of Bi-doped TiO2 with high photocatalytic activity under visible light irradiation

被引:85
|
作者
Xu, Jie [1 ]
Wang, Wenzhong [1 ]
Shang, Meng [1 ]
Gao, Erping [1 ]
Zhang, Zhijie [1 ]
Ren, Jia [1 ]
机构
[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
基金
中国国家自然科学基金;
关键词
Nanofibers; Photocatalysis; TiO2; Bismuth; Visible light; PHOTOLUMINESCENCE; PHOTOREACTIVITY; DEGRADATION;
D O I
10.1016/j.jhazmat.2011.09.010
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
Bi-doped TiO2 nanofibers with different Si content were firstly prepared by an electrospinning method. The as-prepared nanofibers were characterized by scanning electron microscopy (SEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), photoluminescence spectra (PL), and UV-vis diffuse reflectance spectroscopy (DRS). The results indicated that Bi3+ ions were successfully incorporated into TiO2 and extended the absorption of TiO2 into visible light region. The photocatalytic experiments showed that Bi-doped TiO2 nanofibers exhibited higher activities than sole TiO2 in the degradation of rhodamine B (RhB) and phenol under visible light irradiation (lambda > 420 nm), and 3% Bi:TiO2 samples showed the highest photocatalytic activities. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:426 / 430
页数:5
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