New method to obtain stable small-sized SnO2 powders for gas sensors

Authors
Cirera, A Dieguez, A Diaz, R Cornet, A Morante, JR
Citation
A. Cirera et al., New method to obtain stable small-sized SnO2 powders for gas sensors, SENS ACTU-B, 58(1-3), 1999, pp. 360-364
Citations number
5
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
09254005 → ACNP
Volume
58
Issue
1-3
Year of publication
1999
Pages
360 - 364
Database
ISI
SICI code
0925-4005(19990921)58:1-3<360:NMTOSS>2.0.ZU;2-5
Abstract
A new method based on the pyrolytic reaction of SnCl4 . 5(H2O) in the range of 400-900 degrees C is reported to produce stable small gains of SnO2 fro m 6 to 34 nm. The characterisation of these nanocrystallites is discussed, giving important results about oxygen incorporation to the SnO2 lattice and grain growth. This allows the understanding of the crystalline features of the samples. The influence of this new method on grain growth topics (nucl eation, Ostwald ripening, coalescence) is discussed. Examples of the CO and NO2 detection are reported, showing its relation with structural parameter s. (C) 1999 Elsevier Science S.A. All rights reserved.