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ZnO hierarchical nanostructures grown at room temperature and their C2H5OH sensor applications
- Issue Date
- 20-7월-2011
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- ZnO; Gas sensors; Hierarchical nanostructures; C2H5OH sensors
- Citation
- SENSORS AND ACTUATORS B-CHEMICAL, v.155, no.2, pp.745 - 751
- Indexed
- SCIE
SCOPUS
- Journal Title
- SENSORS AND ACTUATORS B-CHEMICAL
- Volume
- 155
- Number
- 2
- Start Page
- 745
- End Page
- 751
- ISSN
- 0925-4005
- Abstract
- Highly crystalline ZnO hierarchical nanostructures were prepared at room temperature through the alkaline hydrolysis of zinc salt by the forced mixing of two immiscible solutions: Zn-nitrate aqueous solution and oleic-acid-dissolved n-hexane solution, The oleic acid acted as a surfactant in the room-temperature formation of well-defined ZnO hierarchical nanostructures, which subsequently demonstrated a sensitive and selective detection of C2H5OH. The responses of these hierarchical nanostructures to 10-100 ppm C2H5OH ranged from 15.7 to 177.7, which were 7-9 times higher than those of the agglomerated nanoparticles. (C) 2011 Elsevier BM. All rights reserved.
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