Preparation and visible-light photocatalytic performances of cyclized polyacrylonitrile/TiO2 nanocomposites

Journal of Hebei University of Science and Technology

Li XU¹  Peng WANG¹  Lin WANG¹  Desong WANG¹  Qingzhi LUO¹  Xiaojing WANG¹ 

[1] School of Science, Hebei University of Science and Technology, Shijiazhuang, Hebei 050018, China;

关键词: catalytic chemistry;    TiO2;    polyacrylonitrile;    sol-gel method;    photocatalytic degradation;    modification;   

DOI  :  10.7535/hbkd.2015yx05007

来源: DOAJ

【 摘 要 】

TiO2 nanomaterials were prepared by a conventional sol-gel method with tetrabutyl titanate as Ti source. The polyacrylonitrile solution with dimethyl sulfoxide as solvent was added into TiO2 sols to form TiO2 gels containing polyacrylonitrile, then the as-prepared TiO2 gels were heat-treated to prepare cyclized polyacrylonitrile/TiO2 (CPAN/TiO2) nanocomposites. The CPAN/TiO2 nanocomposites were characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), UV-vis diffuse reflection spectroscopy (DRS) and photoluminescence spectroscopy (PL). The visible-light photocatalytic performances of CPAN/TiO2 nanocomposites were investigated by evaluating the decomposition of methyl orange. The results reveal CPAN/TiO2 nanocomposites exhibit excellent visible-light photocatalytic acitivity and stability, and show the highest visible-light photocatalytic activity when the mass ratio of CPAN to TiO2, heat-treatment temperature and time are 1∶300, 270 ℃ and 1 h, respectively.

【 授权许可】

Unknown