Paper Info
Title
Electrodes Modification Based on Metal-Free Phthalocyanine: Example of Electrochemical Sensors for the Detection of Acetic Acid
Abstract
Electroanalytical properties of tetra-tert-butyl phthalocyanine (PcH2-tBu) modified electrodes are studied by cyclic voltammetry (CV). The modified electrodes are obtained by CV deposition techniques on gold (Au) and glassy carbon (C) screen-printed electrodes (SPEs) and used for the electrochemical detection of acetic acid (AA). Based on the CV experiments, the electrodeposition mechanism is detailed. The modified PcH2-tBu electrodes reveal one oxidation and one reduction peak within the potential window of the working electrodes. In the presence of the analyte (acetic acid), the modified electrodes show sensitivity in the range of 10 mM to 400 mM. For the PcH2-tBu modified Au electrode, a limit of detection (LOD) of 5.89 mM (based on the + 0.06V peak) was obtained while for the PcH2-tBu modified C electrode a LOD of 17.76 mM (based on the + 0.07V peak) was achieved. A signal decay of 17%, based on 20 experiments, is obtained when gold is used as working electrode. If carbon is used as working electrode a value of 7% is attained. A signal decay is observed after more than 50 cycles of experiments and is more pronounced when higher concentrations of acetic acid are used. A mechanism of sensing is proposed at the end.
Year
DOI
Venue
2015
10.1155/2015/290598
JOURNAL OF SENSORS
Field
DocType
Volume
Detection limit,Analytical chemistry,Inorganic chemistry,Phthalocyanine,Glassy carbon,Cyclic voltammetry,Acetic acid,Engineering,Electrochemistry,Electrode,Working electrode
Journal
2015
ISSN
Citations 
PageRank 
1687-725X
0
0.34
References 
Authors
0
6
Name
Order
Citations
PageRank
Amadou Ndiaye1154.03
Alain Pauly210.71
Sebastien Delile300.34
Jérôme Brunet410.71
Christelle Varenne510.71
Abhishek Kumar600.34