Room-Temperature NO<sub>2</sub> Gas Sensors Based on Granulated Carbon Nanofiber Material
Room-temperature gas sensors based on granulated carbon nanofiber material were investigated for the detection of NO<sub>2</sub>. The granulated material consisting of intertwined carbon nanofibers was synthesized by the decomposition of CH<sub>4</sub> over the Ni/Al<sub&g...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-12-01
|
| Series: | Chemosensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2227-9040/10/12/525 |
| _version_ | 1797460865866268672 |
|---|---|
| author | Alexander G. Bannov Nikita I. Lapekin Pavel B. Kurmashov Arina V. Ukhina Anton Manakhov |
| author_facet | Alexander G. Bannov Nikita I. Lapekin Pavel B. Kurmashov Arina V. Ukhina Anton Manakhov |
| author_sort | Alexander G. Bannov |
| collection | DOAJ |
| description | Room-temperature gas sensors based on granulated carbon nanofiber material were investigated for the detection of NO<sub>2</sub>. The granulated material consisting of intertwined carbon nanofibers was synthesized by the decomposition of CH<sub>4</sub> over the Ni/Al<sub>2</sub>O<sub>3</sub> catalyst in a vibro-fluidized bed reactor. Carbon material was investigated using transmission electron microscopy, Raman spectroscopy, low-temperature nitrogen adsorption, and X-ray photoelectron spectroscopy. Investigation of the gas sensors towards NO<sub>2</sub> at room temperature (25 ± 2 °C) was carried out in a dynamic flow-through setup in the range from 1 to 500 ppm. A comparison of the sensitivity gas sensor to NH<sub>3</sub> and CH<sub>4</sub> was also given. The sensor based on non-treated carbon nanofiber material showed the response ΔR/R<sub>0</sub> of 5.1 % to 10 ppm of NO<sub>2</sub>. It was found that the sensor response to NO<sub>2</sub> decreased when increasing the relative humidity. The effect of the relative humidity was more pronounced for low concentrations of nitrogen dioxide and decreases with a further increase in them. |
| first_indexed | 2024-03-09T17:12:11Z |
| format | Article |
| id | doaj.art-3e09fe735b294c51aa59c31e07e7d2ab |
| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-09T17:12:11Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-3e09fe735b294c51aa59c31e07e7d2ab2023-11-24T13:59:27ZengMDPI AGChemosensors2227-90402022-12-01101252510.3390/chemosensors10120525Room-Temperature NO<sub>2</sub> Gas Sensors Based on Granulated Carbon Nanofiber MaterialAlexander G. Bannov0Nikita I. Lapekin1Pavel B. Kurmashov2Arina V. Ukhina3Anton Manakhov4Department of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, RussiaDepartment of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, RussiaDepartment of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, RussiaInstitute of Solid State Chemistry and Mechanochemistry SB RAS, Kutateladze 18, 630090 Novosibirsk, RussiaNational University of Science and Technology “MISiS”, Leninsky Prospekt 4, 119049 Moscow, RussiaRoom-temperature gas sensors based on granulated carbon nanofiber material were investigated for the detection of NO<sub>2</sub>. The granulated material consisting of intertwined carbon nanofibers was synthesized by the decomposition of CH<sub>4</sub> over the Ni/Al<sub>2</sub>O<sub>3</sub> catalyst in a vibro-fluidized bed reactor. Carbon material was investigated using transmission electron microscopy, Raman spectroscopy, low-temperature nitrogen adsorption, and X-ray photoelectron spectroscopy. Investigation of the gas sensors towards NO<sub>2</sub> at room temperature (25 ± 2 °C) was carried out in a dynamic flow-through setup in the range from 1 to 500 ppm. A comparison of the sensitivity gas sensor to NH<sub>3</sub> and CH<sub>4</sub> was also given. The sensor based on non-treated carbon nanofiber material showed the response ΔR/R<sub>0</sub> of 5.1 % to 10 ppm of NO<sub>2</sub>. It was found that the sensor response to NO<sub>2</sub> decreased when increasing the relative humidity. The effect of the relative humidity was more pronounced for low concentrations of nitrogen dioxide and decreases with a further increase in them.https://www.mdpi.com/2227-9040/10/12/525carbon nanofiberscarbon nanomaterialssensorsgas sensorsnitrogen dioxideresponse |
| spellingShingle | Alexander G. Bannov Nikita I. Lapekin Pavel B. Kurmashov Arina V. Ukhina Anton Manakhov Room-Temperature NO<sub>2</sub> Gas Sensors Based on Granulated Carbon Nanofiber Material Chemosensors carbon nanofibers carbon nanomaterials sensors gas sensors nitrogen dioxide response |
| title | Room-Temperature NO<sub>2</sub> Gas Sensors Based on Granulated Carbon Nanofiber Material |
| title_full | Room-Temperature NO<sub>2</sub> Gas Sensors Based on Granulated Carbon Nanofiber Material |
| title_fullStr | Room-Temperature NO<sub>2</sub> Gas Sensors Based on Granulated Carbon Nanofiber Material |
| title_full_unstemmed | Room-Temperature NO<sub>2</sub> Gas Sensors Based on Granulated Carbon Nanofiber Material |
| title_short | Room-Temperature NO<sub>2</sub> Gas Sensors Based on Granulated Carbon Nanofiber Material |
| title_sort | room temperature no sub 2 sub gas sensors based on granulated carbon nanofiber material |
| topic | carbon nanofibers carbon nanomaterials sensors gas sensors nitrogen dioxide response |
| url | https://www.mdpi.com/2227-9040/10/12/525 |
| work_keys_str_mv | AT alexandergbannov roomtemperaturenosub2subgassensorsbasedongranulatedcarbonnanofibermaterial AT nikitailapekin roomtemperaturenosub2subgassensorsbasedongranulatedcarbonnanofibermaterial AT pavelbkurmashov roomtemperaturenosub2subgassensorsbasedongranulatedcarbonnanofibermaterial AT arinavukhina roomtemperaturenosub2subgassensorsbasedongranulatedcarbonnanofibermaterial AT antonmanakhov roomtemperaturenosub2subgassensorsbasedongranulatedcarbonnanofibermaterial |