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 C2H 5OH. 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.
Original language | English |
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Pages (from-to) | 745-751 |
Number of pages | 7 |
Journal | Sensors and Actuators, B: Chemical |
Volume | 155 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2011 Jul 20 |
Keywords
- CHOH sensors
- Gas sensors
- Hierarchical nanostructures
- ZnO
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Instrumentation
- Condensed Matter Physics
- Surfaces, Coatings and Films
- Metals and Alloys
- Electrical and Electronic Engineering
- Materials Chemistry