Nickel ferrocyanide modified electrodes as active cation-exchange matrices: real time XRD evaluation of overlayer structure and electrochemical behavior

被引：37

作者：

Kelly, MT

Arbuckle-Keil, GA ^{[1
]}

Johnson, LA

Su, EY

Amos, LJ

Chun, JKM

Bocarsly, AB

机构：

[1] Rutgers State Univ, Camden Coll Arts & Sci, Dept Chem, Camden, NJ 08102 USA

[2] Rutgers State Univ, Dept Geol Sci, Piscataway, NJ 08855 USA

[3] Princeton Univ, Dept Chem, Princeton, NJ 08544 USA

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 2001年 / 500卷 / 1-2期

基金：

美国国家科学基金会;

关键词：

chemically modified electrode; nickel ferrocyanide; X-ray powder diffraction; in situ diffractoelectrochemistry;

D O I：

10.1016/S0022-0728(00)00487-3

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The dynamic Variations in the structure of nickel ferrocyanide modified electrodes was determined using in situ diffractoelectrochemical techniques. X-ray powder diffraction peaks from the nickel ferrocyanide modified electrode were recorded during electrochemical oxidation/reduction of the surface overlayer and reversible changes in the unit cell lattice parameter observed. The electrochemical changes that occur during oxidation/reduction in various alkali cation electrolytes are correlated with changes in the lattice parameter. It is postulated that micro-domains form when two cations having markedly different radii such as cesium and potassium are intercalated into the nickel ferrocyanide structure so that distinct regions of the nickel ferrocyanide layer containing cesium exist separated from regions with the lighter alkali cations. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：311 / 321

页数：11

共 32 条

[11] Analytical applications of cooperative interactions associated with charge transfer in cyanometalate electrodes: Analysis of sodium and potassium in human whale blood [J].