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Electrooxidation of Aliphatic and Aromatic Amines at a Ni,Al Based Hydrotalcite Modified Electrode
Author(s) -
Carpani Irene,
Tonelli Domenica
Publication year - 2006
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.200603696
Subject(s) - hydrotalcite , amperometry , chemistry , electrode , pyridine , electrochemistry , inorganic chemistry , chronoamperometry , steric effects , organic chemistry , cyclic voltammetry , catalysis
The electrocatalytic oxidation of a wide series of aliphatic and aromatic amines was investigated in alkaline solutions at a gold electrode modified with a Ni,Al based hydrotalcite. All the amino compounds, with the exception of pyridine, were detected by the amperometric sensor. Chronoamperometric measurements at a rotating disk allowed us to use the same modified electrode for sequential analysis of several analytes in order to investigate the factors affecting the electrochemical response. By varying the characteristics of the substrate, parameters like steric hindrance, kind of amino group, and number of oxidizable sites have been studied. The concentration ranges, where the amperometric response was linear, have been determined for the amines investigated.