Preparation and properties of visible light responsive Y3+ doped Bi5Nb3O15 photocatalysts for Ornidazole decomposition

被引：42
作者：
Zhao, Jie [1 ,2 ]
Yao, Binghua [1 ,2 ]
He, Qiang [3 ]
Zhang, Ting [1 ]
机构：
[1] Xian Univ Technol, Dept Appl Chem, Xian 710048, Shanxi, Peoples R China
[2] Xian Univ Technol, Inst Water Resources & Hydroelect Engn, Xian 710048, Shanxi, Peoples R China
[3] Shaanxi Entry Exit Inspect & Quarantine Bureau, Ctr Tech, Xian 710068, Shanxi, Peoples R China
来源：
JOURNAL OF HAZARDOUS MATERIALS | 2012年 / 229卷
关键词：
Bismuth niobate; Yttrium; Sol-gel method; Ornidazole; Degradation; WATER; DEGRADATION;
D O I：
10.1016/j.jhazmat.2012.05.088
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Nanoparticle of Bi5Nb3O15 doped with Y3+ was prepared for the first time by the sol-gel method combined with impregnation. The degradation of Ornidazole reacting with Y3+-Bi5Nb3O15 was investigated to explore the feasibility of using Y3+-Bi5Nb3O15 to treat antibiotics in wastewater. The products were characterized by X-ray diffraction, field emission scanning electron microscopy, transmission electron microscopy, high-resolution transmission electron microscopy, UV-vis diffuse reflectance spectrum and X-ray photoelectron spectroscopy. The results showed that the Y3+-Bi5Nb3O15 exhibited single-crystalline orthorhombic structure with small particle size (20-100 nm); additionally, its UV-vis absorbance edges significantly shift to the visible-light region. The as-prepared nanoparticles exhibited a high photocatalytic activity in the decomposition of Ornidazole and several possible pathways of degradation of Ornidazole were proposed according to the results of ultra-performance liquid chromatography tandem mass spectrometry. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：151 / 158
页数：8
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