Fabrication of TiO2/WO3 Composite Nanofibers by Electrospinning and Photocatalystic Performance of the Resultant Fabrics

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• 作者：Zhouli Chen ; Jingxin Zhao ; Xuxin Yang ; Quanlin Ye ; Keke Huang ; Changmin Hou ; Zhigang Zhao ; Jichun You ; Yongjin Li
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2016
• 出版时间：January 13, 2016
• 年：2016
• 卷：55
• 期：1
• 页码：80-85
• 全文大小：322K
• ISSN：1520-5045

文摘

By coupling the self-assembly of polystyrene-block-poly(ethylene oxide)-containing titanium-tetraisopropoxide and tungsten hexaphenoxide (the precursors of TiO₂ and WO₃, respectively) with electrospinning technique, the hierarchically porous TiO₂/WO₃ composite nanofibers with inner-bicontinuous and outer-shell structures have been synthesized. Scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy were employed to characterize the structure of the fibers. In these nanofibers, the TiO₂ acts as the frames, and WO₃ fills the gaps. The UV–vis spectroscopy suggests that the spectral response range has been successfully extended into the visible regime. Furthermore, the resulting fabrics show enhanced performance in the photocatalytic degradation of acetaldehyde relative to neat TiO₂ and neat WO₃. Our results indicate that electrospinning the blend solution of block copolymer and two kinds of precursor of inorganic material is an effective strategy to fabricate composite nanofibers that can improve the photocatalytic activity of TiO₂, especially for visible light.