Carbon Nanofibers Synthesized at Different Pressures for Detection of NO<sub>2</sub> at Room Temperature
In this paper, room-temperature chemiresistive gas sensors for NO<sub>2</sub> detection based on CVD-grown carbon nanofibers (CNFs) were investigated. Transmission electron microscopy, low-temperature nitrogen adsorption, and X-ray diffraction were used to investigate the carbon nanomate...
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| Format: | Article |
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MDPI AG
2023-07-01
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| Series: | Chemosensors |
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| Online Access: | https://www.mdpi.com/2227-9040/11/7/381 |
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| author | Nikita I. Lapekin Pavel B. Kurmashov Tatyana V. Larina Yurii A. Chesalov Dmitry S. Kurdyumov Arina V. Ukhina Evgene A. Maksimovskiy Arcady V. Ishchenko Vitalii I. Sysoev Alexander G. Bannov |
| author_facet | Nikita I. Lapekin Pavel B. Kurmashov Tatyana V. Larina Yurii A. Chesalov Dmitry S. Kurdyumov Arina V. Ukhina Evgene A. Maksimovskiy Arcady V. Ishchenko Vitalii I. Sysoev Alexander G. Bannov |
| author_sort | Nikita I. Lapekin |
| collection | DOAJ |
| description | In this paper, room-temperature chemiresistive gas sensors for NO<sub>2</sub> detection based on CVD-grown carbon nanofibers (CNFs) were investigated. Transmission electron microscopy, low-temperature nitrogen adsorption, and X-ray diffraction were used to investigate the carbon nanomaterials. CNFs were synthesized in a wide range of pressure (1–5 bar) by CO<sub>x</sub>-free decomposition of methane over the Ni/Al<sub>2</sub>O<sub>3</sub> catalyst. It was found that the increase in pressure during the synthesis of CNFs induced the later deactivation of the catalyst, and the yield of CNFs decreased when increasing pressure. Sensing properties were determined in a dynamic flow-through installation at NO<sub>2</sub> concentrations ranging from 1 to 400 ppm. Ammonia detection was tested for comparison in a range of 100–500 ppm. The obtained sensors based on CNFs synthesized at 1 bar showed high responses of 1.7%, 5.0%, and 10.0% to 1 ppm, 5 ppm, and 10 ppm NO<sub>2</sub> at 25 ± 2 °C, respectively. It was shown that the obtained non-modified carbon nanomaterials can be used successfully used for room temperature detection of nitrogen dioxide. It was found that the increase in relative humidity (RH) of air induced growth of response, and this effect was facilitated after reaching RH ~35% for CNFs synthesized at elevated pressures. |
| first_indexed | 2024-03-11T01:11:23Z |
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| institution | Directory Open Access Journal |
| issn | 2227-9040 |
| language | English |
| last_indexed | 2024-03-11T01:11:23Z |
| publishDate | 2023-07-01 |
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| record_format | Article |
| series | Chemosensors |
| spelling | doaj.art-1a676ba7bd984d39b9e62c5d8e02e4792023-11-18T18:47:31ZengMDPI AGChemosensors2227-90402023-07-0111738110.3390/chemosensors11070381Carbon Nanofibers Synthesized at Different Pressures for Detection of NO<sub>2</sub> at Room TemperatureNikita I. Lapekin0Pavel B. Kurmashov1Tatyana V. Larina2Yurii A. Chesalov3Dmitry S. Kurdyumov4Arina V. Ukhina5Evgene A. Maksimovskiy6Arcady V. Ishchenko7Vitalii I. Sysoev8Alexander G. Bannov9Department of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, RussiaDepartment of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, RussiaBoreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, RussiaDepartment of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, RussiaInstitute of Solid State Chemistry and Mechanochemistry, Siberian Branch of Russian Academy of Sciences, 630128 Novosibirsk, RussiaInstitute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, RussiaBoreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, RussiaInstitute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, RussiaDepartment of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, RussiaIn this paper, room-temperature chemiresistive gas sensors for NO<sub>2</sub> detection based on CVD-grown carbon nanofibers (CNFs) were investigated. Transmission electron microscopy, low-temperature nitrogen adsorption, and X-ray diffraction were used to investigate the carbon nanomaterials. CNFs were synthesized in a wide range of pressure (1–5 bar) by CO<sub>x</sub>-free decomposition of methane over the Ni/Al<sub>2</sub>O<sub>3</sub> catalyst. It was found that the increase in pressure during the synthesis of CNFs induced the later deactivation of the catalyst, and the yield of CNFs decreased when increasing pressure. Sensing properties were determined in a dynamic flow-through installation at NO<sub>2</sub> concentrations ranging from 1 to 400 ppm. Ammonia detection was tested for comparison in a range of 100–500 ppm. The obtained sensors based on CNFs synthesized at 1 bar showed high responses of 1.7%, 5.0%, and 10.0% to 1 ppm, 5 ppm, and 10 ppm NO<sub>2</sub> at 25 ± 2 °C, respectively. It was shown that the obtained non-modified carbon nanomaterials can be used successfully used for room temperature detection of nitrogen dioxide. It was found that the increase in relative humidity (RH) of air induced growth of response, and this effect was facilitated after reaching RH ~35% for CNFs synthesized at elevated pressures.https://www.mdpi.com/2227-9040/11/7/381gas sensorscarbon nanofibersnitrogen dioxideammoniaadsorptionresponse |
| spellingShingle | Nikita I. Lapekin Pavel B. Kurmashov Tatyana V. Larina Yurii A. Chesalov Dmitry S. Kurdyumov Arina V. Ukhina Evgene A. Maksimovskiy Arcady V. Ishchenko Vitalii I. Sysoev Alexander G. Bannov Carbon Nanofibers Synthesized at Different Pressures for Detection of NO<sub>2</sub> at Room Temperature Chemosensors gas sensors carbon nanofibers nitrogen dioxide ammonia adsorption response |
| title | Carbon Nanofibers Synthesized at Different Pressures for Detection of NO<sub>2</sub> at Room Temperature |
| title_full | Carbon Nanofibers Synthesized at Different Pressures for Detection of NO<sub>2</sub> at Room Temperature |
| title_fullStr | Carbon Nanofibers Synthesized at Different Pressures for Detection of NO<sub>2</sub> at Room Temperature |
| title_full_unstemmed | Carbon Nanofibers Synthesized at Different Pressures for Detection of NO<sub>2</sub> at Room Temperature |
| title_short | Carbon Nanofibers Synthesized at Different Pressures for Detection of NO<sub>2</sub> at Room Temperature |
| title_sort | carbon nanofibers synthesized at different pressures for detection of no sub 2 sub at room temperature |
| topic | gas sensors carbon nanofibers nitrogen dioxide ammonia adsorption response |
| url | https://www.mdpi.com/2227-9040/11/7/381 |
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