Chemical Journal of Chinese Universities ›› 2019, Vol. 40 ›› Issue (11): 2367-2374.doi: 10.7503/cjcu20190286

• Physical Chemistry • Previous Articles     Next Articles

Controllable Preparation and Photocatalytic Properties of Three-dimensional Porous Zinc-tungsten Oxide Heterojunctions

LIU Meihong,TAO Ran,LI Bing,LI Xinghua(),HAN Chaohan,LI Xiaowei,SHAO Changlu()   

  1. School of Physics, Center for Advanced Optoelectronic Functional Materials Research, Key Laboratory of UV Light-Emitting Materials and Technology of Ministry of Education, Northeast Normal University, Changchun 130024, China
  • Received:2019-05-20 Online:2019-11-10 Published:2019-09-05
  • Contact: LI Xinghua,SHAO Changlu E-mail:lixh781@nenu.edu.cn;clshao@nenu.edu.cn
  • Supported by:
    ? Supported by the National Natural Science Foundation of China(51572045);Supported by the National Natural Science Foundation of China(51732003);Supported by the National Natural Science Foundation of China(61803080);Supported by the National Natural Science Foundation of China(91233204)

Abstract:

The zinc and tungsten oxides and their heterojunctions were controllably prepared by adjusting the precursor compositions using a vacuum freeze-drying technology. Owing to the introduction of a polymer in the precursor, the calcined oxide materials could maintain their three-dimensional connected porous structures. The photocatalytic experiments showed that the obtained series of materials could achieve the decolorization degradation of Rhodamine B and exhibit component-dependent photocatalytic activity. The zinc oxide/zinc tungstate three-dimensional porous heterojunctions showed higher photocatalytic activity than the other samples, which could completely decolorize Rhodamine B within 180 min.

Key words: Vacuum freeze-drying, Three-dimensional porous material, Zinc-tungsten oxide, Hetero-structure, Photocatalysis, Rhodamine B

CLC Number: