Visible light photocatalytic activity of TiO2 nanoparticles modified by pre-oxidized polyacrylonitrile

被引：34
|
作者：
Luo, Qingzhi [1 ]
Li, Xiaoyun [1 ]
Li, Xueyan [1 ]
Wang, Desong [1 ]
An, Jing [1 ]
Li, Xiaoxia [1 ]
机构：
[1] Hebei Univ Sci & Technol, Sch Sci, Shijiazhuang 050018, Hebei, Peoples R China
来源：
CATALYSIS COMMUNICATIONS | 2012年 / 26卷
基金：
中国国家自然科学基金;
关键词：
TiO2; nanoparticles; Polyacrylonitrile; Photocatalytic activity; Dye decolorization; TITANIUM-DIOXIDE; METHYL-ORANGE; HEAT-TREATMENT; PHOTODEGRADATION; DEGRADATION; IRRADIATION; SUSPENSION; KINETICS; FIBER;
D O I：
10.1016/j.catcom.2012.06.008
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
TiO2 nanoparticles modified by pre-oxidized polyacrylonitrile were prepared, and characterized by Fourier transform infrared spectra (FTIR), Transmission electron microscopy (TEM). UV-vis diffuse reflectance spectra (UV-vis DRS) and X-ray photoelectron spectra (XPS). Their photocatalytic activities were evaluated by decolorization of an ordinary dye Reactive Brilliant Red X-3B in aqueous solution under visible light irradiation. Results show that pre-oxidized polyacrylonitrile can significantly improve visible light photocatalytic activity of TiO2 nanoparticles. FTIR indicate that pre-oxidized polyacrylonitrile possesses cyclized ladder structure with conjugated groups. UV-vis DRS shows that pre-oxidized polyacrylonitrile can absorb more visible light to enhance visible light photocatalytic activity of TiO2 nanocomposites. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：239 / 243
页数：5
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