Inverse opal gas sensors : Zn(II)-doped tin dioxide systems for low temperature detection of pollutant gases
Sutti, Alessandra, Baratto, Camilla, Calestani, Gianluca, Dionigi, Chiara, Ferroni, Matteo, Faglia, Guido and Sberveglieri, Giorgio 2008, Inverse opal gas sensors : Zn(II)-doped tin dioxide systems for low temperature detection of pollutant gases, Sensors and actuators B : chemical : international journal devoted to research and development of physical and chemical transducers, vol. 130, no. 1, pp. 567-573.
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Title
Inverse opal gas sensors : Zn(II)-doped tin dioxide systems for low temperature detection of pollutant gases
Sensors and actuators B : chemical : international journal devoted to research and development of physical and chemical transducers
Volume number
130
Issue number
1
Start page
567
End page
573
Publisher
Elsevier S.A.
Place of publication
Lausanne, Switzerland
Publication date
2008-03-14
ISSN
0925-4005 1873-3077
Summary
Focusing here on the effects of zinc doping in a nanocrystalline matrix of tin dioxide, inverse opal prototype sensors are presented and extensively studied as superior candidates for gas sensing applications. Courtesy of factors including controlled porosity, enhanced surface to volume ratio and homogeneous dispersion of species in the crystalline lattice assured by the sol–gel technique, prototype sensors were prepared with high dopant ratios in a range of new compositions. Exploiting their high sensitivities to low-gas concentrations at low working temperatures, and thanks to the presented templated sol–gel approach, the prepared sensors open up new frontiers in compositional control over the sensing oxide materials, consequently widening the possibilities available in on-demand gas sensor synthesis.