Electrochemical behaviour of nickel electrodes modified with nitrophenyl groups

被引：16
作者：
Kullapere, Marko
Matisen, Leonard
Saar, Agu
Sammelselg, Vaino
Tammeveski, Kaido
机构：
[1] Univ Tartu, Inst Chem Phys, EE-51014 Tartu, Estonia
[2] Univ Tartu, Inst Phys, EE-51014 Tartu, Estonia
来源：
ELECTROCHEMISTRY COMMUNICATIONS | 2007年 / 9卷 / 09期
关键词：
blocking properties; nickel; modified electrode; hexacyanoferrate; diazonium reduction;
D O I：
10.1016/j.elecom.2007.07.001
中图分类号：
O646 [电化学、电解、磁化学];
学科分类号：
081704 ;
摘要：
The electrochemical modification of the Ni electrode surface with nitrophenyl (NP) groups was performed by the diazonium reduction method. For the first time the barrier properties of NP-modified nickel surfaces were characterized using Fe(CN)(6)(3-/4-) as a redox probe. 6 Electrochemical measurements were carried out in 0. 1 M KOH containing 5 mM K3Fe(CN)(6) using cyclic voltammetry and the rotating disk electrode (RDE) technique. The nitrophenyl groups are strongly bonded to the nickel surface since they can withstand sonication in acetonitrile. The results of the X-ray photoelectron spectroscopy (XPS) analysis confirmed the irreversible attachment of nitrophenyl groups onto the nickel electrode surface. (c) 2007 Elsevier B.V. All rights reserved.
引用
收藏
页码：2412 / 2417
页数：6
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