Design of selective gas sensors using electrospun Pd-doped SnO2 hollow nanofibers

Joong Ki Choi; In Sung Hwang; Sun Jung Kim; Joon Shik Park; Soon Sup Park; Unyong Jeong; Yun Chan Kang; Jong Heun Lee

doi:10.1016/j.snb.2010.07.013

Design of selective gas sensors using electrospun Pd-doped SnO₂ hollow nanofibers

Joong Ki Choi, In Sung Hwang, Sun Jung Kim, Joon Shik Park, Soon Sup Park, Unyong Jeong, Yun Chan Kang, Jong Heun Lee

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

211 Citations (Scopus)

Abstract

Undoped and Pd-doped SnO₂ hollow nanofibers were prepared by single capillary electrospinning and their gas sensing characteristics for 100 ppm H₂, 100 ppm CO, 500 ppm CH₄, and 100 ppm C ₂H₅OH were investigated. The gas responses and responding kinetics were closely dependent upon the sensor temperature and Pd doping concentration. The undoped and 0.08 wt% Pd-doped SnO₂ nanofibers showed selective detection to C₂H₅OH at 385 and 440 °C. In the 0.4 wt% Pd-doped SnO₂ nanofiber sensor, the selective detection to CH₄ and H₂ was optimized at 440 °C with the minimum cross-sensitivity to C₂H₅OH. The tuning of gas selectivity via the combinatorial control of Pd doping concentration and sensor temperature in the electrospun hollow nanofibers was discussed in relation to the gas sensing mechanism.

Original language	English
Pages (from-to)	191-199
Number of pages	9
Journal	Sensors and Actuators, B: Chemical
Volume	150
Issue number	1
DOIs	https://doi.org/10.1016/j.snb.2010.07.013
Publication status	Published - 2010 Oct 21

Keywords

Electrospinning
Gas sensors
Hollow nanofibers
Pd-SnO
Selective detection

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.2010.07.013

Cite this

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title = "Design of selective gas sensors using electrospun Pd-doped SnO2 hollow nanofibers",

abstract = "Undoped and Pd-doped SnO2 hollow nanofibers were prepared by single capillary electrospinning and their gas sensing characteristics for 100 ppm H2, 100 ppm CO, 500 ppm CH4, and 100 ppm C 2H5OH were investigated. The gas responses and responding kinetics were closely dependent upon the sensor temperature and Pd doping concentration. The undoped and 0.08 wt% Pd-doped SnO2 nanofibers showed selective detection to C2H5OH at 385 and 440 °C. In the 0.4 wt% Pd-doped SnO2 nanofiber sensor, the selective detection to CH4 and H2 was optimized at 440 °C with the minimum cross-sensitivity to C2H5OH. The tuning of gas selectivity via the combinatorial control of Pd doping concentration and sensor temperature in the electrospun hollow nanofibers was discussed in relation to the gas sensing mechanism.",

keywords = "Electrospinning, Gas sensors, Hollow nanofibers, Pd-SnO, Selective detection",

author = "Choi, {Joong Ki} and Hwang, {In Sung} and Kim, {Sun Jung} and Park, {Joon Shik} and Park, {Soon Sup} and Unyong Jeong and Kang, {Yun Chan} and Lee, {Jong Heun}",

note = "Funding Information: This work was supported by KOSEF NRL program grant funded by the Korean Government (MEST) (No. R0A-2008-000-20032-0 ), “The next generation core technology for Intelligent Information and electronics” funded by Ministry of Knowledge Economy, Korea University Grant and the Fundamental R&D program for Core Technology of Materials ( M2008010013 ) funded by Ministry of Knowledge Economy. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.",

year = "2010",

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doi = "10.1016/j.snb.2010.07.013",

language = "English",

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AU - Choi, Joong Ki

AU - Hwang, In Sung

AU - Kim, Sun Jung

AU - Park, Joon Shik

AU - Park, Soon Sup

AU - Jeong, Unyong

AU - Kang, Yun Chan

AU - Lee, Jong Heun

N1 - Funding Information: This work was supported by KOSEF NRL program grant funded by the Korean Government (MEST) (No. R0A-2008-000-20032-0 ), “The next generation core technology for Intelligent Information and electronics” funded by Ministry of Knowledge Economy, Korea University Grant and the Fundamental R&D program for Core Technology of Materials ( M2008010013 ) funded by Ministry of Knowledge Economy. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.

PY - 2010/10/21

Y1 - 2010/10/21

N2 - Undoped and Pd-doped SnO2 hollow nanofibers were prepared by single capillary electrospinning and their gas sensing characteristics for 100 ppm H2, 100 ppm CO, 500 ppm CH4, and 100 ppm C 2H5OH were investigated. The gas responses and responding kinetics were closely dependent upon the sensor temperature and Pd doping concentration. The undoped and 0.08 wt% Pd-doped SnO2 nanofibers showed selective detection to C2H5OH at 385 and 440 °C. In the 0.4 wt% Pd-doped SnO2 nanofiber sensor, the selective detection to CH4 and H2 was optimized at 440 °C with the minimum cross-sensitivity to C2H5OH. The tuning of gas selectivity via the combinatorial control of Pd doping concentration and sensor temperature in the electrospun hollow nanofibers was discussed in relation to the gas sensing mechanism.

AB - Undoped and Pd-doped SnO2 hollow nanofibers were prepared by single capillary electrospinning and their gas sensing characteristics for 100 ppm H2, 100 ppm CO, 500 ppm CH4, and 100 ppm C 2H5OH were investigated. The gas responses and responding kinetics were closely dependent upon the sensor temperature and Pd doping concentration. The undoped and 0.08 wt% Pd-doped SnO2 nanofibers showed selective detection to C2H5OH at 385 and 440 °C. In the 0.4 wt% Pd-doped SnO2 nanofiber sensor, the selective detection to CH4 and H2 was optimized at 440 °C with the minimum cross-sensitivity to C2H5OH. The tuning of gas selectivity via the combinatorial control of Pd doping concentration and sensor temperature in the electrospun hollow nanofibers was discussed in relation to the gas sensing mechanism.

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KW - Pd-SnO

KW - Selective detection

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