Ultraselective and ultrasensitive detection of trimethylamine using MoO3 nanoplates prepared by ultrasonic spray pyrolysis

Yoon Ho Cho; You Na Ko; Yun Chan Kang; Il Doo Kim; Jong Heun Lee

doi:10.1016/j.snb.2014.01.021

Ultraselective and ultrasensitive detection of trimethylamine using MoO₃ nanoplates prepared by ultrasonic spray pyrolysis

Yoon Ho Cho, You Na Ko, Yun Chan Kang, Il Doo Kim, Jong Heun Lee

Research output: Contribution to journal › Article › peer-review

73 Citations (Scopus)

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	https://doi.org/10.1016/j.snb.2014.01.021
Publication status	Published - 2014 May

Keywords

Gas sensors
MoO nanoplates
Selective detection
Trimethylamine
Ultrasonic spray pyrolysis

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Instrumentation
Condensed Matter Physics
Surfaces, Coatings and Films
Metals and Alloys
Electrical and Electronic Engineering
Materials Chemistry

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title = "Ultraselective and ultrasensitive detection of trimethylamine using MoO3 nanoplates prepared by ultrasonic spray pyrolysis",

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.",

keywords = "Gas sensors, MoO nanoplates, Selective detection, Trimethylamine, Ultrasonic spray pyrolysis",

author = "Cho, {Yoon Ho} and Ko, {You Na} and Kang, {Yun Chan} and Kim, {Il Doo} and Lee, {Jong Heun}",

note = "Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MEST) (No. 2013R1A2A1A01006545 ). ",

year = "2014",

month = may,

doi = "10.1016/j.snb.2014.01.021",

language = "English",

volume = "195",

pages = "189--196",

journal = "Sensors and Actuators, B: Chemical",

issn = "0925-4005",

publisher = "Elsevier",

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AU - Cho, Yoon Ho

AU - Ko, You Na

AU - Kang, Yun Chan

AU - Kim, Il Doo

AU - Lee, Jong Heun

N1 - Funding Information: This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MEST) (No. 2013R1A2A1A01006545 ).

PY - 2014/5

Y1 - 2014/5

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

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