Micrometer-sized nanoporous tin dioxide spheres for gas sensing

A1 Originalartikel i en vetenskaplig tidskrift (referentgranskad)

Interna författare/redaktörer

Publikationens författare: J.-H. Smått, M. Lindén, T. Wagner, C.-D. Kohl, M. Tiemann
Publiceringsår: 2011
Tidskrift: Sensors and Actuators B: Chemical
Tidskriftsakronym: SENSOR ACTUAT B-CHEM
Volym: 155
Nummer: 2
Artikelns första sida, sidnummer: 483
Artikelns sista sida, sidnummer: 488
Antal sidor: 6
ISSN: 0925-4005


We report the synthesis of mesoporous tin dioxide (SnO2) materials with well-defined particle morphology. The products consist of uniform spheres with a diameter of 5 mu m. The spheres are hierarchically porous with two distinct pore modes of 5.0 nm and 52 nm, respectively. This special porosity is the result of a synthesis procedure which involves a 'hard templating' (nanocasting) process. The product forms an approximately homogeneous monolayer of spheres on a sensor substrate and shows promising response to methane gas with low cross-sensitivity to water. The structural properties and gas-sensing performance are compared with a mesoporous SnO2 material without defined morphology, prepared by a 'soft templating' procedure. (C) 2011 Elsevier B.V. All rights reserved.


Gas sensor, Mesoporous, Nanocasting, Nanoporous, Tin dioxide

Senast uppdaterad 2020-30-03 vid 08:08

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