TY - JOUR
T1 - Chitosan-modified glassy carbon electrodes
T2 - Electrochemical behaviour as a function of the preparation method and pH
AU - Martínez-Huitle, C. A.
AU - Jara, C. Carlesi
AU - Cerro-Lopez, M.
AU - Quiroz, M. A.
PY - 2009
Y1 - 2009
N2 - This contribution is aimed to compare the electrochemical properties of chitosan-modified glassy carbon electrodes. Different modified electrodes were prepared by changing the composition of the starting chitosan solution and were electrochemically characterized by means of cyclic voltammetry. The permeability properties of the chitosan surface films for cationic (Ru(NH3) 63+) and anionic (Fe(CN)64-) species at different pH were tested. The electrochemical response was strongly pH dependent for both ionic species. The study proves that, by changing the chitosan solution used in the preparation procedure, a charge-based molecular recognition of ionic species is possible.
AB - This contribution is aimed to compare the electrochemical properties of chitosan-modified glassy carbon electrodes. Different modified electrodes were prepared by changing the composition of the starting chitosan solution and were electrochemically characterized by means of cyclic voltammetry. The permeability properties of the chitosan surface films for cationic (Ru(NH3) 63+) and anionic (Fe(CN)64-) species at different pH were tested. The electrochemical response was strongly pH dependent for both ionic species. The study proves that, by changing the chitosan solution used in the preparation procedure, a charge-based molecular recognition of ionic species is possible.
KW - Chitosan-modified electrodes
KW - Cyclic voltammetry
KW - Electrochemical sensors
KW - Ion permeability
UR - http://www.scopus.com/inward/record.url?scp=72349099897&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:72349099897
VL - 54
SP - 53
EP - 62
JO - Canadian Journal of Analytical Sciences and Spectroscopy
JF - Canadian Journal of Analytical Sciences and Spectroscopy
SN - 1205-6685
IS - 2
ER -