Synthesis and visible-light photocatalytic activity of Bi-doped TiO2 nanobelts

被引：75
|
作者：
Ji, Tianhao [1 ]
Yang, Fang [1 ]
Lv, Yuanyuan [2 ]
Zhou, Jiaoyan [2 ]
Sun, Jiayue [1 ]
机构：
[1] Beijing Technol & Business Univ, Coll Chem & Environm Engn, Beijing 100048, Peoples R China
[2] Beijing Univ Aeronaut & Astronaut, Beijing 100083, Peoples R China
来源：
MATERIALS LETTERS | 2009年 / 63卷 / 23期
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
Titania; Nanobelts; Semiconductors; Photocatalyst; Hydrothermal synthesis; TITANIUM-DIOXIDE; NANOPARTICLES; NITROGEN; ANATASE;
D O I：
10.1016/j.matlet.2009.06.043
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Bi-doped anatase TiO2 nanobelts were synthesized from layer-structural titanate nanobelts using two-step hydrothermal treatment approach. X-ray diffraction (XRD) patterns and transmission electron microscopic (TEM) images show that the doping of Bi3+ cations does not change the crystal structure and morphology of TiO2 nanobelts. The energy-dispersive X-ray (EDX) and inductively coupled plasma-mass spectrometry (ICP-MS) analytic results suggest that the doping cations mainly exist near the surface of the TiO2 nanobelts. The ultraviolet-visible (UV-vis) absorption spectra show that the absorption edge for the samples with Bi3+ has red shift as compared with that of undoped TiO2 nanobelts, and correspondingly, the photocatalytic degradation of methylene blue under visible-light illumination is enhanced with the increase of Bi-doping content. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码：2044 / 2046
页数：3
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