H 2S sensing performance of electrospun CuO-loaded SnO 2 nanofibers

Sun Woo Choi; Jin Zhang; Katoch Akash; Sang Sub Kim

doi:10.1016/j.snb.2012.02.054

H ₂S sensing performance of electrospun CuO-loaded SnO ₂ nanofibers

Sun Woo Choi, Jin Zhang, Katoch Akash, Sang Sub Kim

Inha University

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

86 Scopus citations

Abstract

We report the synthesis of CuO-loaded SnO ₂ nanofibers via electrospinning as well as their H ₂S sensing properties in a comparative manner with unloaded, pure SnO ₂ nanofibers. Greatly enhanced H ₂S sensing capability was observed by loading a trace amount of CuO into SnO ₂ nanofibers. At 10 ppm H ₂S, the CuO-loaded SnO ₂ nanofibers showed a response of 1.98 × 10 ⁴ and response and recovery times of 1 and 10 s, respectively. In addition, the CuO-loaded SnO ₂ nanofibers showed outstanding selectivity to H ₂S. Along with the unique sensing mechanism based on the creation and disruption of p-n junctions, the high specific surface area provided by the one-dimensional nanofiber shape and the facilitation of p-n junctions due to the presence of nanograins are responsible for the outstanding H ₂S sensing capability observed in the CuO-loaded SnO ₂ nanofibers.

Original language	English
Pages (from-to)	54-60
Number of pages	7
Journal	Sensors and Actuators B: Chemical
Volume	169
DOIs	https://doi.org/10.1016/j.snb.2012.02.054
State	Published - 5 Jul 2012

Keywords

CuO loading
Electrospinning
Gas sensing
H S
Nanofibers
SnO

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10.1016/j.snb.2012.02.054

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@article{45ef08939b2943848503f335722065ef,

title = "H 2S sensing performance of electrospun CuO-loaded SnO 2 nanofibers",

abstract = "We report the synthesis of CuO-loaded SnO 2 nanofibers via electrospinning as well as their H 2S sensing properties in a comparative manner with unloaded, pure SnO 2 nanofibers. Greatly enhanced H 2S sensing capability was observed by loading a trace amount of CuO into SnO 2 nanofibers. At 10 ppm H 2S, the CuO-loaded SnO 2 nanofibers showed a response of 1.98 × 10 4 and response and recovery times of 1 and 10 s, respectively. In addition, the CuO-loaded SnO 2 nanofibers showed outstanding selectivity to H 2S. Along with the unique sensing mechanism based on the creation and disruption of p-n junctions, the high specific surface area provided by the one-dimensional nanofiber shape and the facilitation of p-n junctions due to the presence of nanograins are responsible for the outstanding H 2S sensing capability observed in the CuO-loaded SnO 2 nanofibers.",

keywords = "CuO loading, Electrospinning, Gas sensing, H S, Nanofibers, SnO",

author = "Choi, {Sun Woo} and Jin Zhang and Katoch Akash and Kim, {Sang Sub}",

year = "2012",

month = jul,

day = "5",

doi = "10.1016/j.snb.2012.02.054",

language = "English",

volume = "169",

pages = "54--60",

journal = "Sensors and Actuators B: Chemical",

issn = "0925-4005",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - H 2S sensing performance of electrospun CuO-loaded SnO 2 nanofibers

AU - Choi, Sun Woo

AU - Zhang, Jin

AU - Akash, Katoch

AU - Kim, Sang Sub

PY - 2012/7/5

Y1 - 2012/7/5

N2 - We report the synthesis of CuO-loaded SnO 2 nanofibers via electrospinning as well as their H 2S sensing properties in a comparative manner with unloaded, pure SnO 2 nanofibers. Greatly enhanced H 2S sensing capability was observed by loading a trace amount of CuO into SnO 2 nanofibers. At 10 ppm H 2S, the CuO-loaded SnO 2 nanofibers showed a response of 1.98 × 10 4 and response and recovery times of 1 and 10 s, respectively. In addition, the CuO-loaded SnO 2 nanofibers showed outstanding selectivity to H 2S. Along with the unique sensing mechanism based on the creation and disruption of p-n junctions, the high specific surface area provided by the one-dimensional nanofiber shape and the facilitation of p-n junctions due to the presence of nanograins are responsible for the outstanding H 2S sensing capability observed in the CuO-loaded SnO 2 nanofibers.

AB - We report the synthesis of CuO-loaded SnO 2 nanofibers via electrospinning as well as their H 2S sensing properties in a comparative manner with unloaded, pure SnO 2 nanofibers. Greatly enhanced H 2S sensing capability was observed by loading a trace amount of CuO into SnO 2 nanofibers. At 10 ppm H 2S, the CuO-loaded SnO 2 nanofibers showed a response of 1.98 × 10 4 and response and recovery times of 1 and 10 s, respectively. In addition, the CuO-loaded SnO 2 nanofibers showed outstanding selectivity to H 2S. Along with the unique sensing mechanism based on the creation and disruption of p-n junctions, the high specific surface area provided by the one-dimensional nanofiber shape and the facilitation of p-n junctions due to the presence of nanograins are responsible for the outstanding H 2S sensing capability observed in the CuO-loaded SnO 2 nanofibers.

KW - CuO loading

KW - Electrospinning

KW - Gas sensing

KW - H S

KW - Nanofibers

KW - SnO

UR - http://www.scopus.com/inward/record.url?scp=84861907557&partnerID=8YFLogxK

U2 - 10.1016/j.snb.2012.02.054

DO - 10.1016/j.snb.2012.02.054

M3 - Article

AN - SCOPUS:84861907557

SN - 0925-4005

VL - 169

SP - 54

EP - 60

JO - Sensors and Actuators B: Chemical

JF - Sensors and Actuators B: Chemical

ER -

H ₂S sensing performance of electrospun CuO-loaded SnO ₂ nanofibers

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Keywords

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