Tris(1,10-phenanthroline)iron(II)-bentonite film as efficient electrochemical sensing platform for nitrite determination

被引：37

作者：

Azad, Uday Pratap ^{[1
]}

Turllapati, Srichaitanya ^{[1
]}

Rastogi, Pankaj Kumar ^{[1
]}

Ganesan, Vellaichamy ^{[1
]}

机构：

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

来源：

ELECTROCHIMICA ACTA | 2014年 / 127卷

关键词：

Electrochemical sensing platform; Clay modified electrode; Nitrite oxidation; Electrocatalysis; Amperometry; CLAY-MODIFIED ELECTRODES; GLASSY-CARBON ELECTRODE; ELECTROCATALYTIC OXIDATION; NANOPARTICLES; ADSORPTION; COBALT(II); REDUCTION; HYDRAZINE; BENTONITE; COMPLEXES;

D O I：

10.1016/j.electacta.2014.02.012

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Development of an efficient amperometric sensor for nitrites using Fe(phen)(3)(2+) (where phen = 1,10-phenanthroline) incorporated a bentonite film as electrochemical sensing platform (ESP) is reported. The ESP showed high electrocatalytic activity for nitrite oxidation by decreasing the nitrite oxidation potential and increasing the peak current. It shows linear increase in current with increase in the concentration of nitrite from 1.0 mu M to 100.0 mM and 1.0 mu M to 25.0 mM by cyclic voltammetry and amperometry, respectively. Kinetic parameters such as catalytic rate constant, diffusion coefficient, etc. are evaluated using chronoamperometry and chronocoulometry. Magnitude of interference caused by other species has been examined in simulated mixtures containing high concentration of interfering species and the influence of interferences was found to be negligible. The constructed sensor is successfully applied for the determination of nitrite in potable water samples. (c) 2014 Elsevier Ltd. All rights reserved.

引用

页码：193 / 199

页数：7

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