Effect of the chemical composition on the sensing properties of In2O3-SnO2 nanoparticles synthesized by a non-aqueous method
authors Neri, G; Bonavita, A; Micali, G; Rizzo, G; Pinna, N; Niederberger, M; Ba, J
nationality International
journal SENSORS AND ACTUATORS B-CHEMICAL
author keywords indium oxide; tin oxide; indium-tin oxide; sol-gel routes; gas sensors
keywords CEO2-FE2O3 THIN-FILMS; GAS SENSOR; METAL-OXIDES; NANOCRYSTALS; SENSITIVITY; ETHANOL; NO2
abstract In2O3-SnO2 nanocrystals have been synthesized by a non-aqueous sol-gel technique with the aim to test them as sensing element in resistive gas sensors. ne whole range of compositions between pure indium oxide and 100% tin oxide, was investigated. XRD, FT-IR, TEM and HRTEM analyses of the synthesized nanopowders give evidence for remarkable structural and sizing variations depending on the tin concentration. In particular, with increasing tin content the mean crystallite size decreases, from 25 nm down to 1-2 nm and, at content higher than 75 wt%, it causes a modification of the lattice structure from cubic to tetragonal. Electrical and sensing tests in dry air have been performed on planar sensor devices in thick film configuration depositing In2O3-SnO2 nanocrystals by screen-printing. CO and C2H5OH have been tested as gas target. The results obtained are discussed in relation to the chemical and microstructural properties of the synthesized In2O3-SnO2 nanocrystals. (C) 2007 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE SA
issn 0925-4005
year published 2008
volume 130
issue 1
beginning page 222
ending page 230
digital object identifier (doi) 10.1016/j.snb.2007.07.141
web of science category Chemistry, Analytical; Electrochemistry; Instruments & Instrumentation
subject category Chemistry; Electrochemistry; Instruments & Instrumentation
unique article identifier WOS:000254681900034
  ciceco authors
  impact metrics
journal analysis (jcr 2017):
journal impact factor 5.667
5 year journal impact factor 5.118
category normalized journal impact factor percentile 92.339
dimensions (citation analysis):
altmetrics (social interaction):



 


Apoio

1suponsers_list_ciceco.jpg