Highly Sensitive Ethanol Gas Sensors Based on Ag-Doped ZnO Nanocones
- Authors
- Umar, Ahmad; Lee, Jong-Heun; Kumar, Rajesh; Al-Dossary, O.
- Issue Date
- 3월-2016
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Ag-ZnO Nanocones; Ethanol; Gas Sensor
- Citation
- NANOSCIENCE AND NANOTECHNOLOGY LETTERS, v.8, no.3, pp.241 - 246
- Indexed
- SCIE
SCOPUS
- Journal Title
- NANOSCIENCE AND NANOTECHNOLOGY LETTERS
- Volume
- 8
- Number
- 3
- Start Page
- 241
- End Page
- 246
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/89269
- DOI
- 10.1166/nnl.2016.2109
- ISSN
- 1941-4900
- Abstract
- Herein, we report the successful synthesis, characterization and ethanol gas sensing applications of Ag-doped ZnO nanocones. The Ag-doped ZnO nanocones were synthesized by a facile hydrothermal process and characterized using various analytical tools such as scanning electron microscopy (SEM), X-ray diffraction (XRD), Fourier transform infrared (FTIR) spectroscopy and UV-visible spectroscopy. The detailed studies revealed that the synthesized Ag-doped ZnO nanocones possess good crystallinity and optical properties. Finally, the prepared Ag-doped ZnO nanocones were used as an electrode material to fabricate highly sensitive and selective gas sensors for reducing gases such as C2H5OH, H-2 and CO. The fabricated Ag-doped ZnO nanocones based sensors exhibited a higher response for C2H5OH as compared to H-2 and CO. Moreover, at a lower operating temperature of 400 degrees C, excellent sensitivity was reported for C2H5OH as compared to the higher temperature of 450 degrees C.
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