Chitosan-modified glassy carbon electrodes: Electrochemical behaviour as a function of the preparation method and pH

C. A. Martínez-Huitle; C. Carlesi Jara; M. Cerro-Lopez; M. A. Quiroz

Chitosan-modified glassy carbon electrodes: Electrochemical behaviour as a function of the preparation method and pH

C. A. Martínez-Huitle, C. Carlesi Jara, M. Cerro-Lopez, M. A. Quiroz

SCHOOL OF CHEMICAL ENGINEERING

Research output: Contribution to journal › Article › peer-review

8 Scopus citations

Abstract

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)₆^4-) 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.

Original language	English
Pages (from-to)	53-62
Number of pages	10
Journal	Canadian Journal of Analytical Sciences and Spectroscopy
Volume	54
Issue number	2
State	Published - 2009

Keywords

Chitosan-modified electrodes
Cyclic voltammetry
Electrochemical sensors
Ion permeability

Cite this

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title = "Chitosan-modified glassy carbon electrodes: Electrochemical behaviour as a function of the preparation method and pH",

abstract = "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.",

keywords = "Chitosan-modified electrodes, Cyclic voltammetry, Electrochemical sensors, Ion permeability",

author = "Mart{\'i}nez-Huitle, {C. A.} and Jara, {C. Carlesi} and M. Cerro-Lopez and Quiroz, {M. A.}",

year = "2009",

language = "English",

volume = "54",

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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

SN - 1205-6685

VL - 54

SP - 53

EP - 62

JO - Canadian Journal of Analytical Sciences and Spectroscopy

JF - Canadian Journal of Analytical Sciences and Spectroscopy

IS - 2

ER -

Chitosan-modified glassy carbon electrodes: Electrochemical behaviour as a function of the preparation method and pH

Abstract

Keywords

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