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Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (1): 6-10.

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New Inorganic-organic Hybrid Tetravanadate: Preparation, Characterization and Application in Chemically Modified Electrode

SUN Ying-hua2, LI Xiao-ping2, MEI Ze-min2, ZHU Yu2 and NIU Li1*   

  1. 1. State Key Laboratory of Electroanalytical Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China;
    2. Department of Chemistry, Baicheng Normal College, Baicheng 137000, P. R. China
  • Received:2010-07-07 Revised:2010-10-23 Online:2011-01-25 Published:2011-01-04
  • Contact: NIU Li E-mail:lniu@ciac.jl.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(No.20827004) and the Fund of Department of Science and Technology of Jilin Province, China(No.20080518).

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Abstract: A new inorganic-organic hybrid tetravanadate [Co(2,2'-bpy)3]2V4O12·11H2O(1) has been prepared and characterized. X-Ray diffraction study reveals that compound 1 contains classical cluster anions [V4O12]4–, coordinated cations [Co(2,2'-bpy)3]2+ and eleven water molecules, in which an interesting decamer water cluster is formed. The hybrid nanoparticles were firstly used as a bulk-modifier to fabricate a chemically modified paste electrode (1-CPE). The electrochemical behavior and electrocatalysis of 1-CPE have been studied in detail. The results indicate that 1-CPE has a good electrocatalytic activity toward the reduction of bromate in a 0.5 mol/L H2SO4 aqueous solution. 1-CPE shows remarkable stability that be ascribed to the hydrogen bonding interactions between V4O12 cluster and water cluster, which are very important for practical application in electrode modification.

Key words: Electrochemistry, Hydrothermal, Modified electrode, Tetravanadate