Improvement in Sensing Properties of SnO2 Nanowires by Functionalizing with Pt Nanodots Synthesized by &γ-Ray Radiolysis
Abstract:Selectively-grown networked SnO2 nanowires were functionalized with Pt nanodots by the radiolysis process. NO2 sensing characteristics of Pt-functionalized SnO2 nanowires were compared with those of bare SnO2 nanowires. The results demonstrate that the Pt functionalization greatly enhances the sensitivity and response time in SnO2 nanowire-based gas sensors. The enhancement is likely to be associated with the spillover effect and/or easy dissociation of NO2 into more active chemical species by the catalytic effect of Pt.
Document Type: Research Article
Publication date: February 1, 2012
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