Acta Phys. -Chim. Sin. ›› 2002, Vol. 18 ›› Issue (05): 404-408.doi: 10.3866/PKU.WHXB20020505

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Electrochemical and Electrocatalytic Properties of Microperoxidase-11 Adsorbed on the Poly-L-Lysine Modified Ag Electrode

Wang Feng-Bin;Jiang Hui-Jun;Xing Wei;Lu Tian-Hong;Chen Hui-Lan   

  1. Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun　130022;Department of Chemistry and Environment Sciences,Nanjing Normail University,Nanjing　210097;State Key Laboratory of Coordination Chemistry,Nanjing University,Nanjing　210093
  • Received:2001-09-18 Revised:2001-12-04 Published:2002-05-15
  • Contact: Lu Tian-Hong E-mail:tianhonglu1999@yahoo.com

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Abstract: It is found that Ply adsorbed roughed silver electrode,it is easy to immobilize MP11 with the electrostatic interaction and to prepare the MP11/Ply/Ag modified electrode.The preparation method of the modified electrode is simple.In addition,the modified electrode obtained shows the high and stable electrocatalytic activity for O2 reduction.It is also found that when the sixth coordination of heme in MP11 is replaced with other coordination species with stronger coordination ability,such as imidazole,its formal redox potential shifts to the negative direction and the electrocatalytic activity for O2 reduction is reduced.

Key words: Microperoxidase-11, Poly-L-Lysine, Imidazole, Modified electrode, 　Electrocatalysis