Amperometric Sensing of H2O2 using Pt-TiO2/Reduced Graphene Oxide Nanocomposites
authors Leonardi, SG; Aloisio, D; Donato, N; Russo, PA; Ferro, MC; Pinna, N; Neri, G
nationality International
journal CHEMELECTROCHEM
author keywords amperometric sensors; graphene; hydrogen peroxide; platinum; titanium oxide
keywords HYDROGEN-PEROXIDE REDUCTION; FUNCTIONALIZED GRAPHENE; GRAPHITE OXIDE; NONAQUEOUS SYNTHESIS; MESOPOROUS PLATINUM; FUEL-CELLS; NANOPARTICLES; OXIDATION; NANOSTRUCTURES; BIOSENSOR
abstract Nanostructures made of titanium dioxide and/or platinum nanoparticles supported on reduced graphene oxide (RGO) were synthesized by a simple and fast microwave-assisted route and characterized by X-ray diffraction (XRD), transmission electron microscopy (TEM), Fourier-transform infrared (FTIR) and Raman spectroscopies. The composites consist of RGO sheets fully and homogeneously coated with a dense layer of 8 nm TiO2 and/or 2 nm Pt nanoparticles. Screen-printed flexible sensors based on Pt-TiO2/RGO composites are applied for the amperometric detection of hydrogen peroxide ( H2O2). The electrochemical characteristics of Pt/RGO, TiO2/RGO and Pt-TiO2/RGO-modified screen printed electrodes are investigated and discussed. The developed sensor allows the detection of H2O2, with a linear response from 0 to 20 mm of H2O2 and a sensitivity of 40 mu AmM-1 cm(-2). The resulting device is also suitable for the analysis of this toxic compound in milk.
publisher WILEY-V C H VERLAG GMBH
issn 2196-0216
year published 2014
volume 1
issue 3
beginning page 617
ending page 624
digital object identifier (doi) 10.1002/celc.201300106
web of science category Electrochemistry
subject category Electrochemistry
unique article identifier WOS:000338295800019
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journal analysis (jcr 2019):
journal impact factor 4.154
5 year journal impact factor 4.146
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