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Towards Understanding a Distinct Hydrogen Peroxide Electrocatalytic Enhancement Using Surfactant-Based Coatings on Silver

Published online by Cambridge University Press:  17 February 2014

A. Goodison ,
L. Gonzalez-Macia ,
A. J. Killard  and
A. Morrin
A. Goodison
Affiliation:
School of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland
L. Gonzalez-Macia
Affiliation:
Centre for Research in Biosciences, Department of Applied Sciences, University of the West of England, Coldharbour Lane, Bristol BS16 1QY, UK
A. J. Killard
Affiliation:
Centre for Research in Biosciences, Department of Applied Sciences, University of the West of England, Coldharbour Lane, Bristol BS16 1QY, UK
A. Morrin
Affiliation:
School of Chemical Sciences, National Centre for Sensor Research, Dublin City University, Dublin 9, Ireland
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Abstract

The detection of hydrogen peroxide has been shown to be very important in recent years due to its role in many industrial applications, as well as in biological reactions. Previously, a commercial silver flake-based ink (PF-410, Acheson®), when screen-printed as films to substrate and subsequently coated with surfactant and salt (sodium dodecylbenezene sulphonate (SDBS) and KCl), have been shown to significantly enhance the electrochemical reduction of hydrogen peroxide – up to 80-fold over non-modified films. In this study, an attempt to understand the effect of the silver material within the ink on the catalytic behaviour of the films, as well as the distinct change in behaviour upon modification with surfactant/salt are examined. Factors including Ag morphology, presence of dispersant and Ag material supplier are all investigated to assess their effects on the electrocatalytic breakdown of hydrogen peroxide. To do this, a range of inks were formulated from various Ag materials, e.g., flakes and nanoparticles of various sizes. These inks were then cast as coatings onto conventional glassy carbon (GC) electrodes, and their electrocatalytic behaviours, both as modified and non-modified films were studied.

Keywords

Agcatalyticsensor
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1626: Symposium K – Micro- and Nanoscale Processing of Materials for Biomedical Devices , 2014 , mrsf13-1626-k08-32
Copyright
Copyright © Materials Research Society 2014 

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References

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