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Reference type: Journal
Authors: Kodakari N, Sakamoto T, Shinkawa K, Funabiki H, Katada N, Niwa M
Article Title: Molecular-sieving gas sensor prepared by chemical vapor deposition of silica on tin oxide using an organic template.
Publication date: 1998
Journal: Bulletin of the Chemical Society of Japan
Volume: 71
Issue: (2)
Page numbers: 513-519.
DOI: 10.1246/bcsj.71.513

Abstract: A tin(IV) oxide surface was modified by the chemical vapor deposition (CVD) of tetramethoxysilane after the preadsorption of benzoate anion as a template to obtain a novel gas sensor with a molecular-sieving function. The sensitivity to large molecules was strongly suppressed by the modification, whereas the sensitivity to small molecules was relatively less modified. It is considered that the silica overlayer with pores whose size was controlled by the template molecule prevented large molecules from reacting with the exposed tin oxide surface, resulting in the molecular-sieving property. The catalytic activity for the oxidation of the alcohol was measured in order to support the idea that the reactivity of organic molecules was suppressed by silica


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