Ionic liquid-supported synthesis of CeO                         2                          nanoparticles and its enhanced ethanol gas sensing properties

Dung Van Dao; Thuy T.D. Nguyen; Sanjit M. Majhi; Ganpurev Adilbish; Hu Jun Lee; Yeon Tae Yu; In-Hwan Lee

doi:10.1016/j.matchemphys.2019.03.025

Ionic liquid-supported synthesis of CeO ₂ nanoparticles and its enhanced ethanol gas sensing properties

Dung Van Dao, Thuy T.D. Nguyen, Sanjit M. Majhi, Ganpurev Adilbish, Hu Jun Lee, Yeon Tae Yu, In-Hwan Lee

Research output: Contribution to journal › Article

9 Citations (Scopus)

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	https://doi.org/10.1016/j.matchemphys.2019.03.025
Publication status	Published - 2019 Jun 1

Keywords

Ceria
Gas sensor
Ionic liquid
Nanoparticles

ASJC Scopus subject areas

Materials Science(all)
Condensed Matter Physics

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Van Dao, D., Nguyen, T. T. D., Majhi, S. M., Adilbish, G., Lee, H. J., Yu, Y. T., & Lee, I-H. (2019). Ionic liquid-supported synthesis of CeO ₂ nanoparticles and its enhanced ethanol gas sensing properties Materials Chemistry and Physics, 231, 1-8. https://doi.org/10.1016/j.matchemphys.2019.03.025

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

Van Dao, D, Nguyen, TTD, Majhi, SM, Adilbish, G, Lee, HJ, Yu, YT & Lee, I-H 2019, ' Ionic liquid-supported synthesis of CeO ₂ nanoparticles and its enhanced ethanol gas sensing properties ', Materials Chemistry and Physics, vol. 231, pp. 1-8. https://doi.org/10.1016/j.matchemphys.2019.03.025

Van Dao, Dung ; Nguyen, Thuy T.D. ; Majhi, Sanjit M. ; Adilbish, Ganpurev ; Lee, Hu Jun ; Yu, Yeon Tae ; Lee, In-Hwan. / Ionic liquid-supported synthesis of CeO ₂ nanoparticles and its enhanced ethanol gas sensing properties In: Materials Chemistry and Physics. 2019 ; Vol. 231. pp. 1-8.

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title = " Ionic liquid-supported synthesis of CeO 2 nanoparticles and its enhanced ethanol gas sensing properties ",

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. ",

keywords = "Ceria, Gas sensor, Ionic liquid, Nanoparticles",

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AU - Majhi, Sanjit M.

AU - Adilbish, Ganpurev

AU - Lee, Hu Jun

AU - Yu, Yeon Tae

AU - Lee, In-Hwan

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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.

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