The Ti wire functionalized with inherent TiO2 nanotubes by anodization as one-electrode gas sensor: A proof-of-concept study
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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en
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9
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Sensors and Actuators B: Chemical, Volume 306
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.Description
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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 TiO 2 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