Tin dioxide opals and inverted opals: Near-ideal microstructures for gas sensors

Authors
Scott, RWJ Yang, SM Chabanis, G Coombs, N Williams, DE Ozin, GA
Citation
Rwj. Scott et al., Tin dioxide opals and inverted opals: Near-ideal microstructures for gas sensors, ADVAN MATER, 13(19), 2001, pp. 1468
Citations number
25
Categorie Soggetti
Multidisciplinary,"Material Science & Engineering
Journal title
ADVANCED MATERIALS
ISSN journal
09359648 → ACNP
Volume
13
Issue
19
Year of publication
2001
Database
ISI
SICI code
0935-9648(20011002)13:19<1468:TDOAIO>2.0.ZU;2-7
Abstract
Periodic macroporous forms Of nC-SnO2 have been synthesized by two methods, giving opals and inverse opals that can be used as structurally well-defin ed gas sensors, as demonstrated for CO gas, as well as for toluene and etha nol vapors. The inverse opals, in particular, seem to approximate "ideal" b ehavior. The Figure shows an SEM image of the amorphous SnO2 inverse opal s tructure after toluene extraction.