Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 27, Issue 13-15, Pages 4143-4146Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2007.02.106
Keywords
powders-chemical preparation; films; electrical properties; sensors
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In this work, SnO2-Bi2O3 and SnO2-Sb2O3 nanoparticles were obtained by using polymeric precursor method. Powders were characterized using X-ray diffraction (XRD). transmission electron microscopy (TEM) and differential thermal analysis and thermogravimetric analysis (DTA/TGA). Thick films were deposited on alumina substrates on which electrodes have been previously deposited by sputtering. The electric response of thick films was measured under oxygen and carbon monoxide atmospheres. It was determined that bismuth addition improves the sensor response to the oxygen presence. On the other hand. antimony addition diminishes the sample resistance due to the possible replacement of Sri (4+) by Sb5+. (c) 2007 Published by Elsevier Ltd.
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