C2H5OH sensing characteristics of various Co3O4 nanostructures prepared by solvothermal reaction
- Authors
- Choi, Kwon-Il; Kim, Hae-Ryong; Kim, Kang-Min; Li, Dawei; Cao, Guozhong; Lee, Jong-Heun
- Issue Date
- 8-4월-2010
- Publisher
- ELSEVIER SCIENCE SA
- Keywords
- Co3O4; Gas sensors; Nanostructures; C2H5OH sensor; Response/recovery time
- Citation
- SENSORS AND ACTUATORS B-CHEMICAL, v.146, no.1, pp.183 - 189
- Indexed
- SCIE
SCOPUS
- Journal Title
- SENSORS AND ACTUATORS B-CHEMICAL
- Volume
- 146
- Number
- 1
- Start Page
- 183
- End Page
- 189
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/116642
- DOI
- 10.1016/j.snb.2010.02.050
- ISSN
- 0925-4005
- Abstract
- Various morphologies of Co-containing precursors such as nanorods, nanosheets, and nanocubes were prepared by controlling the solvothermal reaction using cobalt acetate. L(+)-lysine, and oxalic acid, all of which were successfully converted into Co3O4 nanostructures without morphological variation. The gas responses of these Co3O4 nanosheets, nanorods, and nanocubes to 100 ppm C2H5OH at 300 degrees C were 10.5, 4.7, and 4.5 times higher than those of the Co3O4 agglomerated nanopowders, respectively. In addition, the selectivity to C2H5OH over CO and H-2, as well as the response/recovery kinetics, were significantly improved. These enhanced gas-sensing characteristics were attributed to the less agglomerated nanostructures of the sensing materials. (c) 2010 Elsevier B.V. All rights reserved.
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Department of Materials Science and Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.