Reactivity of SnO2-CuO nanocrystalline materials with H2S: a coupled electrical and Raman spectroscopic study

Authors
Pagnier, T Boulova, M Galerie, A Gaskov, A Lucazeau, G
Citation
T. Pagnier et al., Reactivity of SnO2-CuO nanocrystalline materials with H2S: a coupled electrical and Raman spectroscopic study, SENS ACTU-B, 71(1-2), 2000, pp. 134-139
Citations number
12
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
09254005 → ACNP
Volume
71
Issue
1-2
Year of publication
2000
Pages
134 - 139
Database
ISI
SICI code
0925-4005(20001115)71:1-2<134:ROSNMW>2.0.ZU;2-2
Abstract
Nanocrystalline CuO-doped SnO2 powders produced by different ways have been subjected to H2S at 100 degreesC. As for pure SnO2, the reversible formati on of SnSx was deduced from Raman spectra and correlated with the changes i n electrical resistance. When the initial resistance of the sample was high , adsorbed SO4 was observed, and in this case only, the reversible formatio n of Cu2S. These various phenomena are discussed in the light of thermodyna mic data and the influence of powder preparation is emphasized. (C) 2000 El sevier Science B.V. All rights reserved.