A modified composite film electrode of polyoxometalate/carbon nanotubes and its electrocatalytic reduction

作者：Guo Weihua; Xu Lin^*; Xu Bingbing; Yang Yanyan; Sun Zhixia; Liu Shuping

来源：Journal of Applied Electrochemistry, 2009, 39(5): 647-652.

DOI：10.1007/s10800-008-9704-2

• Polyoxometalates
• Electrochemical growth
• Electrocatalytic
• Carbon nanotubes

Keggin-type polyoxometalate (H(4)SiMo(12)O(40)) and carbon nanotubes (CNTs) coated by poly(allylamine hydrochloride) (PAH) were alternately deposited on glassy carbon (GC) electrodes by an electrochemical growth method in acidic aqueous solution. The preparation of the film electrode was simple and convenient. Thus-prepared multilayer films and the electrochemical behavior of the composite film modified electrode were characterized by UV-vis spectroscopy and cyclic voltammetry. It was shown that the multilayer films are uniform and stable. The resulting multilayer film modified electrode behaves as an electrochemical sensor because of its low overpotential for the catalytic reduction of S(2)O(8) (2-) and NO(2) (-) in acidic aqueous solution.

• 出版日期2009-5
• 单位东北师范大学