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Synthesis of unique ZnO/SnO2 core–shell structural microspheres and their gas-sensing properties
- Source :
-
Materials Letters . Dec2012, p5-8. 4p. - Publication Year :
- 2012
-
Abstract
- Abstract: Nanomaterials with unusual architectures or morphologies often exhibit novel functional properties. Here, we apply a simple two-step solution method to synthesize the ZnO/SnO2 microspheres with an average size of 1–2μm, which exhibit a unique core–shell architecture with a uniform dispersion of SnO2 nanoparticles on surfaces of spherical ZnO cores. We further investigate in detail the morphology evolution with reaction time, based upon which a likely growth mechanism is proposed. In property, the prepared core–shell structural ZnO/SnO2 microspheres show excellent gas-sensing functions to ethanol gas of 50ppm at an optimal temperature as low as 250°C, rendering the hybrid microspheres a promising gas-sensing material for the on-site detection of ethanol. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 0167577X
- Database :
- Academic Search Index
- Journal :
- Materials Letters
- Publication Type :
- Academic Journal
- Accession number :
- 82679871
- Full Text :
- https://doi.org/10.1016/j.matlet.2012.08.055