Electrocatalytic Oxidation and Sensitive Determination of Glycine at Poly(NiIIteta) Modified Electrodes

被引：0

作者：

Azad, Uday Pratap ^{[1
]}

Ganesan, Vellaichamy ^{[1
]}

机构：

[1] Banaras Hindu Univ, Fac Sci, Dept Chem, Varanasi 221005, Uttar Pradesh, India

来源：

SENSOR LETTERS | 2013年 / 11卷 / 08期

关键词：

Electrocatalysis; Glycine Oxidation; Modified Electrode; Chronoamperometry; Electrochemical Impedance; GLASSY-CARBON ELECTRODE; NANOTUBE-PASTE ELECTRODE; AMINO-ACIDS; NANOPARTICLES; HYDRAZINE; FILM; CHROMATOGRAPHY; NICKEL(II); COMPLEXES; MEMORY;

D O I：

10.1166/sl.2013.2985

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new electrocatalyst for the electrocatalytic oxidation of glycine (Gly) is reported. A Glassy carbon electrode (GC) was modified with conductive film of polymeric [Ni-II(teta)](2+) (represented as GC/poly(Ni); teta = C-meso-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetra-azacyclotetradecane) and used for the electrocatalytic oxidation and sensitive determination of Gly. Cyclic voltammetry and electrochemical impedance studies of the GC/poly(Ni) electrode show improved kinetics for the oxidation of Gly. The catalytic current at the GC/poly(Ni) electrode in presence of different concentrations of Gly is linear in the range 10.0 mu M to 5.0 mM with two different slopes. The catalytic oxidation rate constant and diffusion coefficient of Gly are determined using chronoamperometry and chronocoulometry.

引用

页码：1490 / 1495

页数：6