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Nanomolar Determination of Penicillamine by Using a Novel Cobalt/Polyaniline/Carbon Paste Nanocomposite Electrode
Author(s) -
Amiri Mandana,
Nekoiean Khadijeh,
Bezaatpour Abolfazl
Publication year - 2012
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.201200281
Subject(s) - polyaniline , nanocomposite , cyclic voltammetry , materials science , differential pulse voltammetry , cobalt , electrode , carbon paste electrode , fourier transform infrared spectroscopy , horizontal scan rate , electrochemistry , nuclear chemistry , polymer chemistry , inorganic chemistry , chemistry , chemical engineering , polymer , nanotechnology , composite material , engineering , polymerization
The fabrication of cobalt/polyaniline nanocomposite was performed using a simple chemical method. It was characterized by using TEM and FTIR techniques. The nanocomposite was applied as a modifier in a carbon paste electrode for selective determination of penicillamine. Penicillamine reacts with emeraldine polyaniline by using 1,4, Michael addition reaction. It can decrease the voltammetric peak current of emeraldine polyaniline. The effects of pH and potential sweep rate on the response of the electrode were investigated. Differential pulse voltammetry was applied for quantitative determination. Dynamic linear ranges were obtained in the ranges of 1.0×10 −8 –1.0×10 −7 mol L −1 and 1.0×10 −9 –1.0×10 −8 mol L −1 .