Next Article in Journal
Theoretical Study on Synchronous Characterization of Surface and Interfacial Mechanical Properties of Thin-Film/Substrate Systems with Residual Stress Based on Pressure Blister Test Technique
Next Article in Special Issue
Facile and Rapid Formation of Giant Vesicles from Glass Beads
Previous Article in Journal
Rheo-Kinetic Study of Sol-Gel Phase Transition of Chitosan Colloidal Systems
Previous Article in Special Issue
Magnetic Nanoparticles Coated with a Thermosensitive Polymer with Hyperthermia Properties
Article Menu
Issue 1 (January) cover image

Export Article

Open AccessArticle
Polymers 2018, 10(1), 48; https://doi.org/10.3390/polym10010048

A Comparative Study of Poly(Azure A) Film-Modified Disposable Electrodes for Electrocatalytic Oxidation of H2O2: Effect of Doping Anion

Department of Physical Chemistry, School of Industrial Engineers, University of Castilla-La Mancha, Campus Universitario s/n, 02071 Albacete, Spain
Present address: Department of Physical Chemistry, Faculty of Chemistry, University of Valencia, C/Dr. Moliner 50, 46100 Burjassot, Spain.
*
Author to whom correspondence should be addressed.
Received: 8 November 2017 / Revised: 23 December 2017 / Accepted: 3 January 2018 / Published: 6 January 2018
(This article belongs to the Special Issue Selected Papers from "ECIS 2017")
View Full-Text   |   Download PDF [2445 KB, uploaded 6 January 2018]   |  

Abstract

In the present paper, poly(azure A) (PAA) films were electrosynthetized in the presence of different doping anions on disposable screen-printed carbon electrodes (SPCEs). The anions used included inorganic monoatomic (chloride and fluoride), inorganic polyatomic (nitrate and sulfate) and organic polyatomic (dodecyl sulfate, DS) species. The coated electrodes thus obtained were characterized by electrochemical techniques and SEM. They showed improved electrocatalytic activities towards hydrogen peroxide oxidation compared to that of a bare SPCE. In particular, the insertion of DS anions inside PAA films provided a special sensitivity to the electrocatalysis of H2O2, which endowed these electrodes with promising analytical features for H2O2 quantification. We obtained a wide linear response for H2O2 within a range of 5 µM to 3 mM and a limit of detection of 1.43 ± 0.10 µM (signal-to-noise ratio of 3). Furthermore, sensitivity was 72.4 ± 0.49 nA·µM−1∙cm−2 at a relatively low electrocatalytic oxidation overpotential of 0.5 V vs. Ag. The applicability of this boosted system was tested by the analysis of H2O2 in commercial samples of a hair lightener and an antiseptic and was corroborated by spectrophotometric methods. View Full-Text
Keywords: conducting polymers; poly(azure A); sodium dodecyl sulfate; electrochemical sensor; disposable screen-printed electrodes; hydrogen peroxide conducting polymers; poly(azure A); sodium dodecyl sulfate; electrochemical sensor; disposable screen-printed electrodes; hydrogen peroxide
Figures

Graphical abstract

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Supplementary material

SciFeed

Share & Cite This Article

MDPI and ACS Style

Agrisuelas, J.; González-Sánchez, M.-I.; Gómez-Monedero, B.; Valero, E. A Comparative Study of Poly(Azure A) Film-Modified Disposable Electrodes for Electrocatalytic Oxidation of H2O2: Effect of Doping Anion. Polymers 2018, 10, 48.

Show more citation formats Show less citations formats

Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Polymers EISSN 2073-4360 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top