TY - JOUR
T1 - The Ti wire functionalized with inherent TiO2 nanotubes by anodization as one-electrode gas sensor
T2 - A proof-of-concept study
AU - Lashkov, Andrey V.
AU - Fedorov, Fedor S.
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
AU - Sysoev, Victor V.
PY - 2020/3/1
Y1 - 2020/3/1
N2 - 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.
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.
KW - Anodization
KW - One electrode
KW - Organic vapor
KW - Selectivity
KW - Ti wire
KW - Titanium oxide nanotube
UR - http://www.scopus.com/inward/record.url?scp=85076835183&partnerID=8YFLogxK
U2 - 10.1016/j.snb.2019.127615
DO - 10.1016/j.snb.2019.127615
M3 - Article
AN - SCOPUS:85076835183
SN - 0925-4005
VL - 306
JO - Sensors and Actuators, B: Chemical
JF - Sensors and Actuators, B: Chemical
M1 - 127615
ER -