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Article

Screen-Printed Electrodes Modified with Metal Phthalocyanines: Characterization and Electrocatalysis in Chlorinated Media

Metrohm DropSens S.L., Vivero Ciencias de la Salud, C/Colegio Santo Domingo de Guzmán s/n, 33010 Oviedo (Asturias), Spain
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Sensors 2020, 20(13), 3702; https://doi.org/10.3390/s20133702
Received: 27 May 2020 / Revised: 30 June 2020 / Accepted: 30 June 2020 / Published: 2 July 2020
(This article belongs to the Special Issue Screen-Printed Electrodes for Sensing)
Metal phthalocyanines are well-known sensing phases with applications in different scientific fields due to their interesting properties. Detailed characterization by Raman spectroscopy was performed in order to study the shifting of the vibrational bands related to the coordination sphere of each metal phthalocyanine. In this work, a study involving the use of screen-printed electrodes (SPEs) with various metal phthalocyanines to electrochemically detect and quantify chlorine (Cl2) gas is presented. The Cl2 gas was generated in-situ via oxidation of the chloride present in form of aqueous salt solutions. The developed method offers not only the possibility to quantify chlorine, but also to discriminate among several chlorinated species due to the changes observed in the voltammetric profiles associated with the interaction between the specie assayed and the phthalocyanine metallic center. Optimization of detecting parameters was also performed to apply this procedure for the quantification of chlorine generated from commercial chlorine tablets. The development of this proof of concept shows interesting possibilities and easy-to-use applications with novel on metal phthalocyanines based SPE sensors. View Full-Text
Keywords: metal phthalocyanines; screen-printed electrodes; electrocatalysis; electrochemical detection; voltammetric sensors; Raman spectroscopy; chlorine detection metal phthalocyanines; screen-printed electrodes; electrocatalysis; electrochemical detection; voltammetric sensors; Raman spectroscopy; chlorine detection
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MDPI and ACS Style

Antuña-Jiménez, D.; Ibáñez, D.; González-García, M.B.; Hernández-Santos, D.; Fanjul-Bolado, P. Screen-Printed Electrodes Modified with Metal Phthalocyanines: Characterization and Electrocatalysis in Chlorinated Media. Sensors 2020, 20, 3702. https://doi.org/10.3390/s20133702

AMA Style

Antuña-Jiménez D, Ibáñez D, González-García MB, Hernández-Santos D, Fanjul-Bolado P. Screen-Printed Electrodes Modified with Metal Phthalocyanines: Characterization and Electrocatalysis in Chlorinated Media. Sensors. 2020; 20(13):3702. https://doi.org/10.3390/s20133702

Chicago/Turabian Style

Antuña-Jiménez, Daniel, David Ibáñez, María B. González-García, David Hernández-Santos, and Pablo Fanjul-Bolado. 2020. "Screen-Printed Electrodes Modified with Metal Phthalocyanines: Characterization and Electrocatalysis in Chlorinated Media" Sensors 20, no. 13: 3702. https://doi.org/10.3390/s20133702

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