Chemical Journal of Chinese Universities ›› 2019, Vol. 40 ›› Issue (2): 372-378.doi: 10.7503/cjcu20180500

• Polymer Chemistry • Previous Articles     Next Articles

Electrospinning Preparation and Photocatalytic Activity of H4SiW12O40/Ethylene Vinyl Alcohol Copolymer Nanofibrous Membrane

ZHANG Xinmu, CUI Xiangxu, YAOMA Kangyue, LI Tingting, ZHANG Zhiming*()   

  1. College of Material Science and Engineering, Key Laboratory of Functional Polymer Materials of Tangshan, North China University of Science and Technology, Tangshan 063210, China
  • Received:2018-07-14 Online:2019-02-10 Published:2018-11-16
  • Contact: ZHANG Zhiming E-mail:zhangzhiming1942@163.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.51472074, 51172062), the Natural Science Foundation of Hebei Province of China(No.E2016209202), the Hundred Talents Program of Hebei Province of China(No.E2012100005), the Engagement Fund of North China University of Science and Technology(No.GP201517), the College Students’ Innovation and Entrepreneurship Training Program of North China University of Science and Technology of China(No.X2017194) and the Scientific Research Foundation for Colleges and Universities of Hebei Province of China(No.ZD2018053)

Abstract:

H4SiW12O40(SiW12)/ethylene vinyl alcohol(EVOH) copolymer composite nanofibrous membrane was prepared by electrospinning. Characterization with energy-dispersive X-ray spectroscopy(EDX) and Fourier transformation infrared spectroscopy(FTIR) indicated that SiW12 was loaded into the EVOH nanofibrous membrane and its Keggin structure remained intact. The as-prepared SiW12/EVOH composite nanofibrous membrane exhibited excellent photocatalytic activity in the degradation of methyl orange(MO) under xenon lamp irradiation. The degradation efficiency of MO reached 96.3% as the mass ratio of EVOH to SiW12 was 2:1, which may be attributed to the synergistic effect of EVOH and SiW12. More importantly, the composite nanofibrous membrane presented an excellent reusability. There was no significant decrease of photocatalytic activity of the catalyst after three cycles of reactions, which mainly because the hydrogen bonds between SiW12 and EVOH could enhance the stability of SiW12 in the membrane. In view of this, SiW12/EVOH composite nanofibrous membranes exhibited the potential for practical applications to eliminate organic dyes from wastewater.

Key words: Electrospinning, Ethylene vinyl alcohol copolymer, H4SiW12O40, Photocatalysis, Composite nanofibrous membrane

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