Carbon nanowall-based gas sensors for carbon dioxide gas detection.

Autor: Zhumadilov RY; Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan.; Department of Physics, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan.; Institute of Applied Science and Information Technologies, Almaty, 050038, Kazakhstan., Yerlanuly Y; Department of Physics, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan.; Institute of Applied Science and Information Technologies, Almaty, 050038, Kazakhstan.; Kazakh-British Technical University, Almaty, 050000, Kazakhstan., Parkhomenko HP; Department of Physics, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan., Soltabayev B; National Laboratory Astana, Astana, 010000, Kazakhstan.; Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan., Orazbayev SA; Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan.; Institute of Applied Science and Information Technologies, Almaty, 050038, Kazakhstan., Bakenov Z; National Laboratory Astana, Astana, 010000, Kazakhstan.; Department of Chemical and Materials Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, 010000, Kazakhstan., Ramazanov TS; Al-Farabi Kazakh National University, Almaty, 050040, Kazakhstan.; Institute of Applied Science and Information Technologies, Almaty, 050038, Kazakhstan., Gabdullin MT; Institute of Applied Science and Information Technologies, Almaty, 050038, Kazakhstan.; Kazakh-British Technical University, Almaty, 050000, Kazakhstan., Jumabekov AN; Department of Physics, School of Sciences and Humanities, Nazarbayev University, Astana, 010000, Kazakhstan.
Jazyk: angličtina
Zdroj: Nanotechnology [Nanotechnology] 2024 Jan 30; Vol. 35 (16). Date of Electronic Publication: 2024 Jan 30.
DOI: 10.1088/1361-6528/ad1a7e
Abstrakt: Carbon nanowalls (CNWs) have attracted significant attention for gas sensing applications due to their exceptional material properties such as large specific surface area, electric conductivity, nano- and/or micro-porous structure, and high charge carrier mobility. In this work, CNW films were synthesized and used to fabricate gas sensors for carbon dioxide (CO 2 ) gas sensing. The CNW films were synthesized using an inductively-coupled plasma (ICP) plasma-enhanced chemical vapor deposition (PECVD) method and their structural and morphological properties were characterized using Raman spectroscopy and electron microscopy. The obtained CNW films were used to fabricate gas sensors employing interdigitated gold (Au) microelectrodes. The gas sensors were fabricated using both direct synthesis of CNW films on interdigitated Au microelectrodes on quartz and also transferring presynthesized CNW films onto interdigitated Au microelectrodes on glass. The CO 2 gas-sensing properties of fabricated devices were investigated for different concentrations of CO 2 gas and temperature-ranges. The sensitivities of fabricated devices were found to have a linear dependence on the concentration of CO 2 gas and increase with temperature. It was revealed that devices, in which CNW films have a maze-like structure, perform better compared to the ones that have a petal-like structure. A sensitivity value of 1.18% was obtained at 500 ppm CO 2 concentration and 100 °C device temperature. The CNW-based gas sensors have the potential for the development of easy-to-manufacture and efficient gas sensors for toxic gas monitoring.
(© 2024 IOP Publishing Ltd.)
Databáze: MEDLINE
Externí odkaz: