Enhanced H2S sensing characteristics of Pt doped SnO2 nanofibers sensors with micro heater

Ki Young Dong; Joong Ki Choi; In Sung Hwang; Jin Woo Lee; Byung Hyun Kang; Dae Jin Ham; Jong Heun Lee; Byeong Kwon Ju

doi:10.1016/j.snb.2011.03.043

Enhanced H₂S sensing characteristics of Pt doped SnO₂ nanofibers sensors with micro heater

Ki Young Dong, Joong Ki Choi, In Sung Hwang, Jin Woo Lee, Byung Hyun Kang, Dae Jin Ham, Jong Heun Lee, Byeong Kwon Ju

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

99 Citations (Scopus)

Abstract

Gas sensors were designed and fabricated using oxide nanofibers as the sensing materials on micro platforms using micromachining technology. Pure and Pt doped SnO₂ nanofibers were prepared by electrospinning and their H₂S gas sensing characteristics were subsequently investigated. The sensing temperatures of 300 and 500 °C could be attained at the heater powers of 36 and 94 mW, respectively, and the sensors showed high and fast responses to H₂S. The responses of 0.08 wt% Pt doped SnO₂ nanofibers to 4-20 ppm H₂S, were 25.9-40.6 times higher than those of pure SnO₂ nanofibers. The gas sensing characteristics were discussed in relation to the catalytic promotion effect of Pt, nano-scale morphology of electrospun nanofibers, and sensor platform using micro heater.

Original language	English
Pages (from-to)	154-161
Number of pages	8
Journal	Sensors and Actuators, B: Chemical
Volume	157
Issue number	1
DOIs	https://doi.org/10.1016/j.snb.2011.03.043
Publication status	Published - 2011 Sept 20

Keywords

Gas sensors
HS sensors
Micro heater
Pt-SnO
SnO nanofibers

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

Access to Document

10.1016/j.snb.2011.03.043

Cite this

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title = "Enhanced H2S sensing characteristics of Pt doped SnO2 nanofibers sensors with micro heater",

abstract = "Gas sensors were designed and fabricated using oxide nanofibers as the sensing materials on micro platforms using micromachining technology. Pure and Pt doped SnO2 nanofibers were prepared by electrospinning and their H2S gas sensing characteristics were subsequently investigated. The sensing temperatures of 300 and 500 °C could be attained at the heater powers of 36 and 94 mW, respectively, and the sensors showed high and fast responses to H2S. The responses of 0.08 wt% Pt doped SnO2 nanofibers to 4-20 ppm H2S, were 25.9-40.6 times higher than those of pure SnO2 nanofibers. The gas sensing characteristics were discussed in relation to the catalytic promotion effect of Pt, nano-scale morphology of electrospun nanofibers, and sensor platform using micro heater.",

keywords = "Gas sensors, HS sensors, Micro heater, Pt-SnO, SnO nanofibers",

author = "Dong, {Ki Young} and Choi, {Joong Ki} and Hwang, {In Sung} and Lee, {Jin Woo} and Kang, {Byung Hyun} and Ham, {Dae Jin} and Lee, {Jong Heun} and Ju, {Byeong Kwon}",

note = "Funding Information: This work was supported by World Class University (WCU, R32-2009-000-10082-0 ) Project of the Ministry of Education, Science and Technology (Korea Science and Engineering Foundation) and partially supported by Basic Science Research Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Education, Science and Technology (no. 2009-0083126 ). This work of prof. J.-H. Lee was supported by KOSEF NRL program (no. R0A-2008-000-20032-0 ). ",

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language = "English",

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T1 - Enhanced H2S sensing characteristics of Pt doped SnO2 nanofibers sensors with micro heater

AU - Dong, Ki Young

AU - Choi, Joong Ki

AU - Hwang, In Sung

AU - Lee, Jin Woo

AU - Kang, Byung Hyun

AU - Ham, Dae Jin

AU - Lee, Jong Heun

AU - Ju, Byeong Kwon

N1 - Funding Information: This work was supported by World Class University (WCU, R32-2009-000-10082-0 ) Project of the Ministry of Education, Science and Technology (Korea Science and Engineering Foundation) and partially supported by Basic Science Research Program through the National Research Foundation (NRF) of Korea funded by the Ministry of Education, Science and Technology (no. 2009-0083126 ). This work of prof. J.-H. Lee was supported by KOSEF NRL program (no. R0A-2008-000-20032-0 ).

PY - 2011/9/20

Y1 - 2011/9/20

N2 - Gas sensors were designed and fabricated using oxide nanofibers as the sensing materials on micro platforms using micromachining technology. Pure and Pt doped SnO2 nanofibers were prepared by electrospinning and their H2S gas sensing characteristics were subsequently investigated. The sensing temperatures of 300 and 500 °C could be attained at the heater powers of 36 and 94 mW, respectively, and the sensors showed high and fast responses to H2S. The responses of 0.08 wt% Pt doped SnO2 nanofibers to 4-20 ppm H2S, were 25.9-40.6 times higher than those of pure SnO2 nanofibers. The gas sensing characteristics were discussed in relation to the catalytic promotion effect of Pt, nano-scale morphology of electrospun nanofibers, and sensor platform using micro heater.

AB - Gas sensors were designed and fabricated using oxide nanofibers as the sensing materials on micro platforms using micromachining technology. Pure and Pt doped SnO2 nanofibers were prepared by electrospinning and their H2S gas sensing characteristics were subsequently investigated. The sensing temperatures of 300 and 500 °C could be attained at the heater powers of 36 and 94 mW, respectively, and the sensors showed high and fast responses to H2S. The responses of 0.08 wt% Pt doped SnO2 nanofibers to 4-20 ppm H2S, were 25.9-40.6 times higher than those of pure SnO2 nanofibers. The gas sensing characteristics were discussed in relation to the catalytic promotion effect of Pt, nano-scale morphology of electrospun nanofibers, and sensor platform using micro heater.

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KW - HS sensors

KW - Micro heater

KW - Pt-SnO

KW - SnO nanofibers

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