Abstract
An ultraselective and ultrasensitive trimethylamine (TMA) sensor was achieved using MoO3 nanoplates-prepared by ultrasonic spray pyrolysis followed by a heat treatment at 450 C. The small and thin MoO3 nanoplates with gas-accessible structures showed an unusually high response to 5 ppm TMA (ratio of resistance to air and gas = 373.74) at 300 C with detection limit as low as 45 ppb. Moreover, the ratios of the cross-responses to interfering gases (i.e., 5 ppm C2H5OH, CO, CH4, C3H8, H2, and NO2) to the response to 5 ppm TMA were extremely low (0.008-0.016). The source of the ultraselective and highly sensitive detection of TMA with negligible interference from other gases is discussed with respect to the acid/base properties, size, and morphology of the MoO3 sensing materials.
| Original language | English |
|---|---|
| Pages (from-to) | 189-196 |
| Number of pages | 8 |
| Journal | Sensors and Actuators, B: Chemical |
| Volume | 195 |
| DOIs | |
| Publication status | Published - 2014 May 1 |
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Keywords
- Gas sensors
- MoO nanoplates
- Selective detection
- Trimethylamine
- Ultrasonic spray pyrolysis
ASJC Scopus subject areas
- Instrumentation
- Materials Chemistry
- Surfaces, Coatings and Films
- Metals and Alloys
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Electrical and Electronic Engineering
Cite this
Ultraselective and ultrasensitive detection of trimethylamine using MoO3 nanoplates prepared by ultrasonic spray pyrolysis. / Cho, Yoon Ho; Ko, You Na; Kang, Yun Chan; Kim, Il Doo; Lee, Jong Heun.
In: Sensors and Actuators, B: Chemical, Vol. 195, 01.05.2014, p. 189-196.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Ultraselective and ultrasensitive detection of trimethylamine using MoO3 nanoplates prepared by ultrasonic spray pyrolysis
AU - Cho, Yoon Ho
AU - Ko, You Na
AU - Kang, Yun Chan
AU - Kim, Il Doo
AU - Lee, Jong Heun
PY - 2014/5/1
Y1 - 2014/5/1
N2 - An ultraselective and ultrasensitive trimethylamine (TMA) sensor was achieved using MoO3 nanoplates-prepared by ultrasonic spray pyrolysis followed by a heat treatment at 450 C. The small and thin MoO3 nanoplates with gas-accessible structures showed an unusually high response to 5 ppm TMA (ratio of resistance to air and gas = 373.74) at 300 C with detection limit as low as 45 ppb. Moreover, the ratios of the cross-responses to interfering gases (i.e., 5 ppm C2H5OH, CO, CH4, C3H8, H2, and NO2) to the response to 5 ppm TMA were extremely low (0.008-0.016). The source of the ultraselective and highly sensitive detection of TMA with negligible interference from other gases is discussed with respect to the acid/base properties, size, and morphology of the MoO3 sensing materials.
AB - An ultraselective and ultrasensitive trimethylamine (TMA) sensor was achieved using MoO3 nanoplates-prepared by ultrasonic spray pyrolysis followed by a heat treatment at 450 C. The small and thin MoO3 nanoplates with gas-accessible structures showed an unusually high response to 5 ppm TMA (ratio of resistance to air and gas = 373.74) at 300 C with detection limit as low as 45 ppb. Moreover, the ratios of the cross-responses to interfering gases (i.e., 5 ppm C2H5OH, CO, CH4, C3H8, H2, and NO2) to the response to 5 ppm TMA were extremely low (0.008-0.016). The source of the ultraselective and highly sensitive detection of TMA with negligible interference from other gases is discussed with respect to the acid/base properties, size, and morphology of the MoO3 sensing materials.
KW - Gas sensors
KW - MoO nanoplates
KW - Selective detection
KW - Trimethylamine
KW - Ultrasonic spray pyrolysis
UR - http://www.scopus.com/inward/record.url?scp=84893217611&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84893217611&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2014.01.021
DO - 10.1016/j.snb.2014.01.021
M3 - Article
AN - SCOPUS:84893217611
VL - 195
SP - 189
EP - 196
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
SN - 0925-4005
ER -