Ultraselective and ultrasensitive detection of H2S in highly humid atmosphere using CuO-loaded SnO2 hollow spheres for real-time diagnosis of halitosis

Kwon Il Choi; Hyo Joong Kim; Yun Chan Kang; Jong Heun Lee

doi:10.1016/j.snb.2013.12.111

Ultraselective and ultrasensitive detection of H₂S in highly humid atmosphere using CuO-loaded SnO₂ hollow spheres for real-time diagnosis of halitosis

Kwon Il Choi, Hyo Joong Kim, Yun Chan Kang, Jong Heun Lee

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

170 Citations (Scopus)

Abstract

The CuO-loaded SnO₂ hollow spheres were prepared by ultrasonic spray pyrolysis and their H₂S sensing characteristics in dry and humid atmospheres for the diagnosis of halitosis were investigated. The loading of CuO to SnO₂ hollow spheres decreased the humidity dependence of H₂S sensing characteristics down to negligible level, increased the gas response (ratio of resistance to air and gas) in highly humid atmosphere (relative humidity 80%) to 1 ppm H₂S from 3.13 to 22.4, and enhanced the selectivity to H₂S over CO, NH₃, CH ₃COCH₃, C₆H₆, CH₃C ₆H₅, (CH₃)₂C₆H ₄, and NO at 300 C. Ultraselective and ultrasensitive detection of H₂S under highly humid atmosphere with negligible interferences from other biomarker gases provides a promising and reliable analysis tool for real-time diagnosis of halitosis from exhaled breath.

Original language	English
Pages (from-to)	371-376
Number of pages	6
Journal	Sensors and Actuators, B: Chemical
Volume	194
DOIs	https://doi.org/10.1016/j.snb.2013.12.111
Publication status	Published - 2014 Apr

Bibliographical note

Funding Information:
This work was supported by NRF grant funded by the Korea Government (MEST) (No. 2013R1A2A1A01006545 ).

Keywords

CuO-loaded SnO
Gas sensor
HS
Halitosis
Humidity dependence

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.2013.12.111

Cite this

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title = "Ultraselective and ultrasensitive detection of H2S in highly humid atmosphere using CuO-loaded SnO2 hollow spheres for real-time diagnosis of halitosis",

abstract = "The CuO-loaded SnO2 hollow spheres were prepared by ultrasonic spray pyrolysis and their H2S sensing characteristics in dry and humid atmospheres for the diagnosis of halitosis were investigated. The loading of CuO to SnO2 hollow spheres decreased the humidity dependence of H2S sensing characteristics down to negligible level, increased the gas response (ratio of resistance to air and gas) in highly humid atmosphere (relative humidity 80%) to 1 ppm H2S from 3.13 to 22.4, and enhanced the selectivity to H2S over CO, NH3, CH 3COCH3, C6H6, CH3C 6H5, (CH3)2C6H 4, and NO at 300 C. Ultraselective and ultrasensitive detection of H2S under highly humid atmosphere with negligible interferences from other biomarker gases provides a promising and reliable analysis tool for real-time diagnosis of halitosis from exhaled breath.",

keywords = "CuO-loaded SnO, Gas sensor, HS, Halitosis, Humidity dependence",

author = "Choi, {Kwon Il} and Kim, {Hyo Joong} and Kang, {Yun Chan} and Lee, {Jong Heun}",

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

year = "2014",

month = apr,

doi = "10.1016/j.snb.2013.12.111",

language = "English",

volume = "194",

pages = "371--376",

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

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T1 - Ultraselective and ultrasensitive detection of H2S in highly humid atmosphere using CuO-loaded SnO2 hollow spheres for real-time diagnosis of halitosis

AU - Choi, Kwon Il

AU - Kim, Hyo Joong

AU - Kang, Yun Chan

AU - Lee, Jong Heun

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

PY - 2014/4

Y1 - 2014/4

N2 - The CuO-loaded SnO2 hollow spheres were prepared by ultrasonic spray pyrolysis and their H2S sensing characteristics in dry and humid atmospheres for the diagnosis of halitosis were investigated. The loading of CuO to SnO2 hollow spheres decreased the humidity dependence of H2S sensing characteristics down to negligible level, increased the gas response (ratio of resistance to air and gas) in highly humid atmosphere (relative humidity 80%) to 1 ppm H2S from 3.13 to 22.4, and enhanced the selectivity to H2S over CO, NH3, CH 3COCH3, C6H6, CH3C 6H5, (CH3)2C6H 4, and NO at 300 C. Ultraselective and ultrasensitive detection of H2S under highly humid atmosphere with negligible interferences from other biomarker gases provides a promising and reliable analysis tool for real-time diagnosis of halitosis from exhaled breath.

AB - The CuO-loaded SnO2 hollow spheres were prepared by ultrasonic spray pyrolysis and their H2S sensing characteristics in dry and humid atmospheres for the diagnosis of halitosis were investigated. The loading of CuO to SnO2 hollow spheres decreased the humidity dependence of H2S sensing characteristics down to negligible level, increased the gas response (ratio of resistance to air and gas) in highly humid atmosphere (relative humidity 80%) to 1 ppm H2S from 3.13 to 22.4, and enhanced the selectivity to H2S over CO, NH3, CH 3COCH3, C6H6, CH3C 6H5, (CH3)2C6H 4, and NO at 300 C. Ultraselective and ultrasensitive detection of H2S under highly humid atmosphere with negligible interferences from other biomarker gases provides a promising and reliable analysis tool for real-time diagnosis of halitosis from exhaled breath.

KW - CuO-loaded SnO

KW - Gas sensor

KW - HS

KW - Halitosis

KW - Humidity dependence

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