期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 155, 期 2, 页码 745-751出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2011.01.040
关键词
ZnO; Gas sensors; Hierarchical nanostructures; C2H5OH sensors
资金
- Korean government (MEST) [R0A-2008-000-20032-0]
- Ministry of Knowledge Economy [M2008010013]
- Korea Institute of Industrial Technology(KITECH) [M2008010013] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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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