The Ti wire functionalized with inherent TiO2 nanotubes by anodization as one-electrode gas sensor: A proof-of-concept study

Andrey V. Lashkov; Fedor S. Fedorov; Mikhail Yu Vasilkov; Alexey V. Kochetkov; Ilia V. Belyaev; Ilia A. Plugin; Alexey S. Varezhnikov; Anastasia N. Filipenko; Stepan A. Romanov; Albert G. Nasibulin; Ghenadii Korotcenkov; Victor V. Sysoev

doi:10.1016/j.snb.2019.127615

The Ti wire functionalized with inherent TiO₂ nanotubes by anodization as one-electrode gas sensor: A proof-of-concept study

Andrey V. Lashkov, Fedor S. Fedorov^*, Mikhail Yu Vasilkov, Alexey V. Kochetkov, Ilia V. Belyaev, Ilia A. Plugin, Alexey S. Varezhnikov, Anastasia N. Filipenko, Stepan A. Romanov, Albert G. Nasibulin, Ghenadii Korotcenkov, Victor V. Sysoev

^*Corresponding author for this work

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Abstract

We propose a Ti wire functionalized with inherent anatase TiO₂ nanotubes by an anodization process to serve as a one-electrode gas sensor. The design is similar to other known one-electrode gas sensors when the wire is employed both as a heater and measuring resistive element. We discuss the low-cost fabrication protocol, the structure of the sensor characterized by Raman spectroscopy and electron microscopy, and show the proof-of-concept sensor responses to a few organic vapors, acetone and alcohols, in mixture with air. We have found the response-to-concentration curves to follow a linear fit with a detection limit below 1000 ppm. These findings enlarge the range of possible gas sensor architectures based on nanostructured material for research and practical applications.

Original language	English
Article number	127615
Number of pages	9
Journal	Sensors and Actuators, B: Chemical
Volume	306
DOIs	https://doi.org/10.1016/j.snb.2019.127615
Publication status	Published - 1 Mar 2020
MoE publication type	A1 Journal article-refereed

Keywords

Anodization
One electrode
Organic vapor
Selectivity
Ti wire
Titanium oxide nanotube

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10.1016/j.snb.2019.127615

CHEM-Lashkov et al-2020-Ti wire functionalized-SensActBAccepted author manuscript, 2.18 MBLicence: CC BY-NC-ND
CHEM-Lashkov et al-2020-Ti wire functionalized-Supplement-SensActBOther version, 625 KBLicence: CC BY-NC-ND

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Lashkov, A. V., Fedorov, F. S., Vasilkov, M. Y., Kochetkov, A. V., Belyaev, I. V., Plugin, I. A., Varezhnikov, A. S., Filipenko, A. N., Romanov, S. A., Nasibulin, A. G., Korotcenkov, G., & Sysoev, V. V. (2020). The Ti wire functionalized with inherent TiO₂ nanotubes by anodization as one-electrode gas sensor: A proof-of-concept study. Sensors and Actuators, B: Chemical, 306, [127615]. https://doi.org/10.1016/j.snb.2019.127615

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abstract = "We propose a Ti wire functionalized with inherent anatase TiO2 nanotubes by an anodization process to serve as a one-electrode gas sensor. The design is similar to other known one-electrode gas sensors when the wire is employed both as a heater and measuring resistive element. We discuss the low-cost fabrication protocol, the structure of the sensor characterized by Raman spectroscopy and electron microscopy, and show the proof-of-concept sensor responses to a few organic vapors, acetone and alcohols, in mixture with air. We have found the response-to-concentration curves to follow a linear fit with a detection limit below 1000 ppm. These findings enlarge the range of possible gas sensor architectures based on nanostructured material for research and practical applications.",

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Lashkov, AV, Fedorov, FS, Vasilkov, MY, Kochetkov, AV, Belyaev, IV, Plugin, IA, Varezhnikov, AS, Filipenko, AN, Romanov, SA, Nasibulin, AG, Korotcenkov, G & Sysoev, VV 2020, 'The Ti wire functionalized with inherent TiO₂ nanotubes by anodization as one-electrode gas sensor: A proof-of-concept study', Sensors and Actuators, B: Chemical, vol. 306, 127615. https://doi.org/10.1016/j.snb.2019.127615

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AU - Vasilkov, Mikhail Yu

AU - Kochetkov, Alexey V.

AU - Belyaev, Ilia V.

AU - Plugin, Ilia A.

AU - Varezhnikov, Alexey S.

AU - Filipenko, Anastasia N.

AU - Romanov, Stepan A.

AU - Nasibulin, Albert G.

AU - Korotcenkov, Ghenadii

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AB - We propose a Ti wire functionalized with inherent anatase TiO2 nanotubes by an anodization process to serve as a one-electrode gas sensor. The design is similar to other known one-electrode gas sensors when the wire is employed both as a heater and measuring resistive element. We discuss the low-cost fabrication protocol, the structure of the sensor characterized by Raman spectroscopy and electron microscopy, and show the proof-of-concept sensor responses to a few organic vapors, acetone and alcohols, in mixture with air. We have found the response-to-concentration curves to follow a linear fit with a detection limit below 1000 ppm. These findings enlarge the range of possible gas sensor architectures based on nanostructured material for research and practical applications.

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