Premium
Tin Dioxide Opals and Inverted Opals: Near‐Ideal Microstructures for Gas Sensors
Author(s) -
Scott R. W. J.,
Yang S. M.,
Chabanis G.,
Coombs N.,
Williams D. E.,
Ozin G. A.
Publication year - 2001
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/1521-4095(200110)13:19<1468::aid-adma1468>3.0.co;2-o
Subject(s) - materials science , tin dioxide , microstructure , tin , ideal (ethics) , nanotechnology , optoelectronics , chemical engineering , composite material , metallurgy , philosophy , epistemology , engineering
Periodic macroporous forms of nc‐SnO 2 have been synthesized by two methods, giving opals and inverse opals that can be used as structurally well‐defined gas sensors, as demonstrated for CO gas, as well as for toluene and ethanol vapors. The inverse opals, in particular, seem to approximate “ideal” behavior. The Figure shows an SEM image of the amorphous SnO 2 inverse opal structure after toluene extraction.