物理化学学报 >> 1989, Vol. 5 >> Issue (03): 353-357.doi: 10.3866/PKU.WHXB19890319

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Cu(bpy)22+—Nafion聚合物膜修饰电极研究

钟传键; 王水菊; 田昭武   

  1. 厦门大学化学系物理化学研究所; 厦门大学测试中心
  • 收稿日期:1987-10-24 修回日期:1988-02-22 发布日期:1989-06-15
  • 通讯作者: 钟传键

AN INVESTIGATION OF THE Cu(bpy)22+-INCORPORATED NAFION FILMS COATED ON ELECTRODE SURFACES

Zhong Chuanjian*; Wang Shuiju; Tian Zhaowu   

  1. Department of Chemistry and Institute of Physical Chemistry; Xiamen University; Xiamen
  • Received:1987-10-24 Revised:1988-02-22 Published:1989-06-15
  • Contact: Zhong Chuanjian

Abstract: Electrodes coated with Nafion polymer films in which the cationic copper-bipyridyl complex(Cu(bpy)_2~(2+)) has been incorporated have been investigated by using XPS,ESR and cyclic voltammetric means. It is revealed that there exist considerably strong interactions between the incorporated species and the polymers, sulfonic sites,and that (at least) two kinds of environment are involved in the films. Much larger cyclic voltammetric response of the incorporated species (Cu(Ⅱ)←→Cu(Ⅰ)) is observed when a small amount of acid and/or, particularly, organic reagent which is electrochemically inactivei is added to the aqueous solution. The experimenatal results are explained by taking the different regions of Nafion into account. It is also preliminarily demon strated from cyclic voltammetry that the incorporated complexes in the polymer films exhibit electrocatalytic activity toward the reduction of dioxygen dissolved in the aqueous electrolyte.