Inverse modeling of CO reactions at SnO
            2 nanowire surfaces for selective detection

G. Tulzer; S. Baumgartner; E. Brunet; G. C. Mutinati; S. Steinhauer; A. Köck; C. Heitzinger A

doi:10.1016/j.proeng.2012.09.270

Inverse modeling of CO reactions at SnO ₂ nanowire surfaces for selective detection

G. Tulzer, S. Baumgartner, E. Brunet, G. C. Mutinati, S. Steinhauer, A. Köck, C. Heitzinger A

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

6 Scopus citations

Abstract

Nanowire gas sensors show high sensitivity towards various gases and offer great potential to improve present gas sensing. In this work, we investigate experimental results achieved with an undoped single SnO ₂ nanowire sensor device for CO pulses in N ₂ atmosphere at different operating temperatures. We calculated the reaction parameters according to the mass action law including frequency factors, activation energies, and numbers of intrinsic as well as extrinsic surface sites. With the values obtained, we then calculated the surface charge of the nanowire sensor by solving the corresponding differential equations. The simulated results agree very well with the experimental values at an operating temperature of 200°C and hence provide good understanding of the chemical reaction. This can be used to simulate the current through the transducer and consequently the sensitivity of the device, and the parameters provided here are useful for computational procedures to provide selectivity.

Original language	English (US)
Title of host publication	Procedia Engineering
Pages	809-812
Number of pages	4
Volume	47
DOIs	https://doi.org/10.1016/j.proeng.2012.09.270
State	Published - 2012
Externally published	Yes
Event	26th European Conference on Solid-State Transducers, EUROSENSOR 2012 - Krakow, Poland Duration: Sep 9 2012 → Sep 12 2012

Other

Other	26th European Conference on Solid-State Transducers, EUROSENSOR 2012
Country/Territory	Poland
City	Krakow
Period	9/9/12 → 9/12/12

Keywords

Gas sensors
Inverse modeling
Nanowire
Selectivity
SnO
Surface reactions

ASJC Scopus subject areas

Engineering(all)

Access to Document

10.1016/j.proeng.2012.09.270

Cite this

Tulzer, G, Baumgartner, S, Brunet, E, Mutinati, GC, Steinhauer, S, Köck, A & A, CH 2012, Inverse modeling of CO reactions at SnO ₂ nanowire surfaces for selective detection in Procedia Engineering. vol. 47, pp. 809-812, 26th European Conference on Solid-State Transducers, EUROSENSOR 2012, Krakow, Poland, 9/9/12. https://doi.org/10.1016/j.proeng.2012.09.270

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title = "Inverse modeling of CO reactions at SnO 2 nanowire surfaces for selective detection ",

abstract = "Nanowire gas sensors show high sensitivity towards various gases and offer great potential to improve present gas sensing. In this work, we investigate experimental results achieved with an undoped single SnO 2 nanowire sensor device for CO pulses in N 2 atmosphere at different operating temperatures. We calculated the reaction parameters according to the mass action law including frequency factors, activation energies, and numbers of intrinsic as well as extrinsic surface sites. With the values obtained, we then calculated the surface charge of the nanowire sensor by solving the corresponding differential equations. The simulated results agree very well with the experimental values at an operating temperature of 200°C and hence provide good understanding of the chemical reaction. This can be used to simulate the current through the transducer and consequently the sensitivity of the device, and the parameters provided here are useful for computational procedures to provide selectivity.",

keywords = "Gas sensors, Inverse modeling, Nanowire, Selectivity, SnO, Surface reactions",

author = "G. Tulzer and S. Baumgartner and E. Brunet and Mutinati, {G. C.} and S. Steinhauer and A. K{\"o}ck and A, {C. Heitzinger}",

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AU - Tulzer, G.

AU - Baumgartner, S.

AU - Brunet, E.

AU - Mutinati, G. C.

AU - Steinhauer, S.

AU - Köck, A.

AU - A, C. Heitzinger

PY - 2012

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N2 - Nanowire gas sensors show high sensitivity towards various gases and offer great potential to improve present gas sensing. In this work, we investigate experimental results achieved with an undoped single SnO 2 nanowire sensor device for CO pulses in N 2 atmosphere at different operating temperatures. We calculated the reaction parameters according to the mass action law including frequency factors, activation energies, and numbers of intrinsic as well as extrinsic surface sites. With the values obtained, we then calculated the surface charge of the nanowire sensor by solving the corresponding differential equations. The simulated results agree very well with the experimental values at an operating temperature of 200°C and hence provide good understanding of the chemical reaction. This can be used to simulate the current through the transducer and consequently the sensitivity of the device, and the parameters provided here are useful for computational procedures to provide selectivity.

AB - Nanowire gas sensors show high sensitivity towards various gases and offer great potential to improve present gas sensing. In this work, we investigate experimental results achieved with an undoped single SnO 2 nanowire sensor device for CO pulses in N 2 atmosphere at different operating temperatures. We calculated the reaction parameters according to the mass action law including frequency factors, activation energies, and numbers of intrinsic as well as extrinsic surface sites. With the values obtained, we then calculated the surface charge of the nanowire sensor by solving the corresponding differential equations. The simulated results agree very well with the experimental values at an operating temperature of 200°C and hence provide good understanding of the chemical reaction. This can be used to simulate the current through the transducer and consequently the sensitivity of the device, and the parameters provided here are useful for computational procedures to provide selectivity.

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KW - Nanowire

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KW - SnO

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