Photocatalytic self-cleaning properties of cotton fabrics functionalized with p-BiOI/n-TiO2 heterojunction

被引:37
|
作者
Wu, Deyong [1 ,2 ]
Wang, Huiyuan [1 ]
Li, Caolong [3 ]
Xia, Jin [1 ]
Song, Xinjian [1 ,2 ]
Huang, Wensheng [2 ]
机构
[1] Hubei Minzu Univ, Key Lab Biol Resources Protect & Utilizat Hubei P, Enshi City 445000, Hubei Province, Peoples R China
[2] Hubei Minzu Univ, Sch Chem & Environm Engn, Enshi City 445000, Hubei Province, Peoples R China
[3] China Pharmaceut Univ, Dept Inorgan Chem, Coll Sci, Nanjing 211169, Jiangsu, Peoples R China
来源
SURFACE & COATINGS TECHNOLOGY | 2014年 / 258卷
基金
中国国家自然科学基金;
关键词
BiOI; TiO2; Heterojunction; Self-cleaning; Photocatalysis; VISIBLE-LIGHT IRRADIATION; P-N-JUNCTION; BIOI/TIO2 NANOTUBE ARRAYS; HIGHLY EFFICIENT; TIO2; BIOI; DEGRADATION; WATER; HETEROSTRUCTURES; IMMOBILIZATION;
D O I
10.1016/j.surfcoat.2014.08.019
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
To endow cotton fabrics with self-cleaning property, TiO2 films were coated on the cotton fabrics by means of sol-gel method, and then BiOI nanosheets were loaded on the surface of TiO2 films by a chemical bath deposition method. The as-prepared BiOI/TiO2-cotton samples were characterized by scanning electron microscopy, X-ray diffraction, X-ray photoelectron spectroscopy and UV-vis diffuse reflectance spectroscopy. The photocatalytic activity and stability of the BiOI/TiO2-cotton samples toward degradation of methyl orange (MO) solutions were evaluated. In comparison with TiO2-cotton, the dramatic enhancement in the photocatalytic performance of the BiOI/TiO2-cotton could be attributed to strong visible-light absorption of BiOI photocatalysts and the formation of a p-BiOI/n-TiO2 heterojunction. Meanwhile, the photocatalytic performances of BiOI/TiO2-cotton were maintained for the cycling experiments, indicating that BiOI/TiO2-cotton could be used as stable and efficient self-cleaning materials. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码:672 / 676
页数:5
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