Please use this identifier to cite or link to this item: http://hdl.handle.net/10773/20697
Title: Sensing behavior of SnO2/reduced graphene oxide nanocomposites toward NO2
Author: Neri, Giovanni
Leonardi, Salvatore Gianluca
Latino, Mariangela
Donato, Nicola
Baek, Seunghwan
Conte, Donato E.
Russo, Patricia A.
Pinna, Nicola
Keywords: ION BATTERIES
GAS SENSORS
SHEETS
FILMS
CO
Issue Date: 2013
Publisher: ELSEVIER SCIENCE SA
Abstract: Crystalline SnO2/reduced graphene oxide (RGO) nanocomposites were synthesized by a one-pot microwave-assisted non-aqueous sol gel method, in which partially reduction of the graphene oxide and nanoparticle formation occurs simultaneously. Composite samples with different SnO2 loadings on the RGO were prepared and characterized by TEM, XRD, TGA-DSC and FT-IR. Chemoresistive devices, consisting of a thick layer of the samples synthesized on alumina substrates provided with Pt interdigitated electrodes, were fabricated and their electrical and NO2 sensing characteristics investigated. The results obtained have shown the possibility of a fine tuning of the sensing characteristics of the devices fabricated by simply controlling the amount of metal oxide nanoparticles loaded onto the reduced graphene oxide sheets. This was explained on the basis of the critical role played by the n-SnO2/p-RGO heterojunction formed on the composite materials. (C) 2012 Elsevier B.V. All rights reserved.
Peer review: yes
URI: http://hdl.handle.net/10773/20697
DOI: 10.1016/j.snb.2012.10.031
ISSN: 0925-4005
Publisher Version: 10.1016/j.snb.2012.10.031
Appears in Collections:CICECO - Artigos

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