Chinese Journal of Applied Chemistry ›› 2020, Vol. 37 ›› Issue (4): 481-488.DOI: 10.11944/j.issn.1000-0518.2020.04.190268

• Full Papers • Previous Articles    

Syntheses and Catalytic Properties of Keggin-Type Polyoxometalate-Based Crystal Materials

ZHANG Zhuanfang*(),ZHENG Jianhua,XIN Jianjiao,ZHAO Nan,CHEN Jie,XU Rui   

  1. Center of Teaching Experiment Management Equiment,Qiqihar University,Qiqihar,Heilongjiang 161006,China
  • Received:2019-10-12 Accepted:2020-02-17 Published:2020-04-01 Online:2020-04-10
  • Contact: ZHANG Zhuanfang
  • Supported by:
    Supported by the Education Department Basic Business of Heilongjiang(No.135309452)


By introducing polyoxotungstates [PW12O40]3- into the Co-bbp(bbp:3,5-bis(pyrid-4-yl)pyridine) system, a new polyoxometalate-based inorganic-organic hybrid, [Co(Hbbp)2][PW12O40] (1), was synthesized under the hydrothermal condition. The structure was determined by single-crystal X-ray diffraction analysis. Structural analyses show that metal Co coordinates with bbp to form the metal-organic monomer which stacks through ππ bond between ligands to from a two-dimensional layered framework structure. [PW12O40]3- is embedded into the gaps as the template, forming a multi-acid-based supramolecular compound. The properties of compound 1 was investigated, and the results indicate that the degradation ratio of rhodamine B (RhB) reaches 94% after 120 min (under visible light). In addition, compound 1 is a multifunctional catalyst and has good electrocatalytic activities towards the reduction of NO2- and oxidation of ascorbic acid.

Key words: Keggin polyoxometalate, supramolecular compound, hydrothermal syntheses, catalytic property