Journal
SCRIPTA MATERIALIA
Volume 67, Issue 3, Pages 293-296Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2012.05.008
Keywords
Nanostructured materials; Semiconductors; Nanocomposite; Sensors; Formaldehyde
Categories
Funding
- National Natural Science Foundation of China [21006116]
- Chinese Ministry of Science Technology [2010CB534916, 2012CB723106]
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Here we present a sensitive formaldehyde (HCHO) gas sensor based on an ordered array of Ag-In2O3 composite nanorods, which is synthesized via the nanocasting route by directly using the solvent-extracted mesoporous silica as a hard template. Incorporation of metallic Ag nanoparticles in the nanorod array significantly improves its gas-sensing properties. The response of the ordered array of Ag-In2O3 composite nanorods to 85 ppm HCHO is 4.5 times higher than that for a pure In2O3 nanorod array without Ag. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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