Title :
Development of an amperometric H2O2 sensor based on MOx/reduced graphene oxide nanocomposites
Author :
Leonardi, S.G. ; Aloisio, D. ; Donato, N. ; Latino, M. ; Russo, P. ; Pinna, N. ; Neri, G.
Author_Institution :
Dept. of Electron. Eng., Chem. & Ind. Eng., Univ. of Messina, Messina, Italy
Abstract :
Pt-MOx/RGO composites (MOx = SnO2, TiO2) have been synthesized by a simple and fast non-aqueous sol-gel procedure assisted by microwave and characterized by SEM, TEM, XPS, XRD and FTIR spectroscopy. Screen-printed flexible sensors based on the composites synthesized have been applied for the amperometric detection of hydrogen peroxide (H2O2). The electrochemical characteristics of various Pt-MOx/RGO-modified screen printed electrodes were investigated and discussed. The developed sensor allowed the detection of H2O2, with a linear response from 0.1 to 20 mM of H2O2 and a sensitivity of 40 μA mM-1 cm-2, exhibiting furthermore good reproducibility and stability.
Keywords :
Fourier transform spectroscopy; X-ray diffraction; X-ray photoelectron spectra; amperometric sensors; electrochemical electrodes; graphene; hydrogen compounds; infrared spectroscopy; nanocomposites; nanosensors; platinum; scanning electron microscopy; sol-gel processing; thick film sensors; tin compounds; titanium compounds; transmission electron microscopy; FTIR spectroscopy; H2O2; Pt-SnO2-CO; Pt-TiO2-CO; SEM; TEM; XPS; XRD; amperometric sensor; graphene oxide nanocomposite; hydrogen peroxide dectection; microwave assisted nonaqueous sol-gel process; screen printed electrode; screen printed flexible sensor; Electrodes; Graphene; Hydrogen; Metals; Nanocomposites; Nanoparticles; Amperometric sensor; graphene oxide; hydrogen peroxide; nanocomposites;
Conference_Titel :
Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS & EUROSENSORS XXVII), 2013 Transducers & Eurosensors XXVII: The 17th International Conference on
Conference_Location :
Barcelona
DOI :
10.1109/Transducers.2013.6626978
