Chem. J. Chinese Universities ›› 2021, Vol. 42 ›› Issue (8): 2558.doi: 10.7503/cjcu20210083

• Physical Chemistry • Previous Articles     Next Articles

Pyroelectrically-induced Catalytic Performance of Zr-based MOF Under Cold-hot Alternation

CHANG Shuqing1, XIN Xu1, HUANG Yaqi1, ZHANG Xincong1, FU Yanghe1(), ZHU Weidong1, ZHANG Fumin1, LI Xiaona2()   

  1. 1.Key Laboratory of the Ministry of Education for Advanced Catalysis Materials,Institute of Physical Chemistry,Zhejiang Normal University,Jinhua 321004,China
    2.Jilin Engineering Vocational College,Siping 136001,China
  • Received:2021-02-04 Online:2021-08-10 Published:2021-08-05
  • Contact: FU Yanghe E-mail:yhfu@zjnu.cn;434655268@qq.com
  • Supported by:
    the Natural Science Foundation of Zhejiang Province, China(LY18B030006)

Abstract:

Pyroelectrically-induced catalysis is emerging as a green and highly efficient technology for the degradation of dye wastewater. Zirconium metal organic framework [NH2-UiO-66(Zr)], as the pyroelectric material, was firstly applied in the degradation of Rhodamine B through harvesting cold-hot alternation energy. NH2-UiO-66(Zr) showed excellent ferroelectric response, in which the positive and negative electric charges could be generated on the surface via the pyroelectric effect under cold-hot alternation. The pyroelectrically induced charges would combine with the hydroxide and the dissolved oxygen to form hydroxy radicals and superoxide radical, resulting in the decomposition of dye. The degradation efficiency of RhB can be up to 99.5% over NH2-UiO-66(Zr) after 100 cold-hot cycles, exhibiting good reusability. This work can broaden the application of MOFs and also provide a new avenue for the treatment of dye wastewater.

Key words: Pyroelectric catalysis, Dye degradation, Metal organic framework, Cold-hot alternation, Wastewater treatment

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