Chem. J. Chinese Universities ›› 2014, Vol. 35 ›› Issue (5): 941.doi: 10.7503/cjcu20131114

• Articles: Inorganic Chemistry • Previous Articles     Next Articles

Electrospinning Preparation and Visible-light Photocatalytic Activity of MoO3/V2O5 Heterostructures

CHUAI Hongyuan, ZHOU Defeng*(), ZHU Xiaofei, YANG Guocheng, LI Zhaohui   

  1. School of Chemistry and Life Science, Changchun University of Technology, Changchun 130012, China
  • Received:2013-11-18 Online:2014-05-10 Published:2014-04-14
  • Contact: ZHOU Defeng E-mail:defengzhou65@126.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.20871023), the Development of Science and Technology Plan of Jilin Province, China(Nos.2010549, 20130102001JC) and the Program of Jilin Provincial Education Department, China(Nos.2013130, 2013146)

Abstract:

MoO3/V2O5 heterostructures with high photocatalytic activity in visible light region were synthesized via electrospinning technique and sol-gel process. The morphologies and structures of MoO3/V2O5 heterostructures were characterized by X-ray diffraction, field emission scanning electron microscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, and UV-visible diffuse reflectance spectroscopy. The photocatalytic performances of MoO3/V2O5 heterostructures were evaluated by the photodegradation of methylene blue(MB) under visible light irradiation. The results indicated that heterojunctions between MoO3 and V2O5 were formed when the n(Mo)/n(V) ratio was above 1∶8, and the separation of photogenerated electron-hole pairs on MoO3/V2O5 heterostructures was promoted, which made the decolorization rate of MB by MoO3/V2O5 heterostructures much higher than usage of pure V2O5 nanofibers. The optimum n(V)/n(Mo) ratio of MoO3/V2O5 heterostructures was found to be about 1∶6 and the decolorization rate of MB could be reached 97.24%. In addition, the photocatalytic mechanism of the MoO3/V2O5 heterostructures was further analyzed and discussed.

Key words: Photocatalyst, Heterostructures, Electrospinning, MoO3/V2O5

CLC Number: 

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