Abstract
Reducing the particle size of ceria nanostrutures could provide an efficient approach to improve gas sensing properties thereof. Here, we synthesized small CeO 2 nanoparticles (3–5 nm) in the support of [EMIM][Tf 2 N] ionic liquid. The obtained CeO 2 nanoparticles showed relatively large surface areas (68.29 m 3 /g) and especially high content of Ce 3+ ions (13.5%), which increase the chemisorption of reagents and oxygen leading on enhancing gas sensing performance. Namely, at the optimal operating temperature of 400 °C, the gas response of synthesized CeO 2 sensor to 100 ppm of ethanol was 2.3, which was 1.83 times higher than that of commercial one (1.26). The superior gas sensing mechanism of synthesized CeO 2 was also discussed on the basis of the electrical resistance change. The present work could provide novel pathway to synthesize ceria and related materials, which would be possibly expected to be potential candidates for gas sensing, by the use of ionic liquid hereafter.
| Original language | English |
|---|---|
| Pages (from-to) | 1-8 |
| Number of pages | 8 |
| Journal | Materials Chemistry and Physics |
| Volume | 231 |
| DOIs | |
| Publication status | Published - 2019 Jun 1 |
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Keywords
- Ceria
- Gas sensor
- Ionic liquid
- Nanoparticles
ASJC Scopus subject areas
- Materials Science(all)
- Condensed Matter Physics
Cite this
Ionic liquid-supported synthesis of CeO 2 nanoparticles and its enhanced ethanol gas sensing properties . / Van Dao, Dung; Nguyen, Thuy T.D.; Majhi, Sanjit M.; Adilbish, Ganpurev; Lee, Hu Jun; Yu, Yeon Tae; Lee, In-Hwan.
In: Materials Chemistry and Physics, Vol. 231, 01.06.2019, p. 1-8.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ionic liquid-supported synthesis of CeO 2 nanoparticles and its enhanced ethanol gas sensing properties
AU - Van Dao, Dung
AU - Nguyen, Thuy T.D.
AU - Majhi, Sanjit M.
AU - Adilbish, Ganpurev
AU - Lee, Hu Jun
AU - Yu, Yeon Tae
AU - Lee, In-Hwan
PY - 2019/6/1
Y1 - 2019/6/1
N2 - Reducing the particle size of ceria nanostrutures could provide an efficient approach to improve gas sensing properties thereof. Here, we synthesized small CeO 2 nanoparticles (3–5 nm) in the support of [EMIM][Tf 2 N] ionic liquid. The obtained CeO 2 nanoparticles showed relatively large surface areas (68.29 m 3 /g) and especially high content of Ce 3+ ions (13.5%), which increase the chemisorption of reagents and oxygen leading on enhancing gas sensing performance. Namely, at the optimal operating temperature of 400 °C, the gas response of synthesized CeO 2 sensor to 100 ppm of ethanol was 2.3, which was 1.83 times higher than that of commercial one (1.26). The superior gas sensing mechanism of synthesized CeO 2 was also discussed on the basis of the electrical resistance change. The present work could provide novel pathway to synthesize ceria and related materials, which would be possibly expected to be potential candidates for gas sensing, by the use of ionic liquid hereafter.
AB - Reducing the particle size of ceria nanostrutures could provide an efficient approach to improve gas sensing properties thereof. Here, we synthesized small CeO 2 nanoparticles (3–5 nm) in the support of [EMIM][Tf 2 N] ionic liquid. The obtained CeO 2 nanoparticles showed relatively large surface areas (68.29 m 3 /g) and especially high content of Ce 3+ ions (13.5%), which increase the chemisorption of reagents and oxygen leading on enhancing gas sensing performance. Namely, at the optimal operating temperature of 400 °C, the gas response of synthesized CeO 2 sensor to 100 ppm of ethanol was 2.3, which was 1.83 times higher than that of commercial one (1.26). The superior gas sensing mechanism of synthesized CeO 2 was also discussed on the basis of the electrical resistance change. The present work could provide novel pathway to synthesize ceria and related materials, which would be possibly expected to be potential candidates for gas sensing, by the use of ionic liquid hereafter.
KW - Ceria
KW - Gas sensor
KW - Ionic liquid
KW - Nanoparticles
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UR - http://www.scopus.com/inward/citedby.url?scp=85064193232&partnerID=8YFLogxK
U2 - 10.1016/j.matchemphys.2019.03.025
DO - 10.1016/j.matchemphys.2019.03.025
M3 - Article
VL - 231
SP - 1
EP - 8
JO - Materials Chemistry and Physics
JF - Materials Chemistry and Physics
SN - 0254-0584
ER -