Carbon Nanofibers Synthesized at Different Pressures for Detection of NO2 at Room Temperature | Sciact - CRIS-system of Boreskov Institute of Catalysis

Carbon Nanofibers Synthesized at Different Pressures for Detection of NO2 at Room Temperature Full article

Journal

Chemosensors
ISSN: 2227-9040

Output data

Year: 2023, Volume: 11, Number: 7, Article number : 381, Pages count : 17 DOI: 10.3390/chemosensors11070381

Tags

gas sensors; carbon nanofibers; nitrogen dioxide; ammonia; adsorption; response

Authors

Lapekin Nikita I. ¹ , Kurmashov Pavel B. ¹ , Larina Tatyana V. ² , Chesalov Yurii A. ² , Kurdyumov Dmitry S. ¹ , Ukhina Arina V. ³ , Maksimovskiy Evgene A. ⁴ , Ishchenko Arcady V. ² , Sysoev Vitalii I. ⁴ , Bannov Alexander G. ¹

Affiliations

1	Department of Chemistry and Chemical Engineering, Novosibirsk State Technical University, 630073 Novosibirsk, Russia
2	Boreskov Institute of Catalysis, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia
3	Institute of Solid State Chemistry and Mechanochemistry, Siberian Branch of Russian Academy of Sciences, 630128 Novosibirsk, Russia
4	Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences, 630090 Novosibirsk, Russia

Funding (1)

Ministry of Science and Higher Education of the Russian Federation

FSUN-2023-0008

In this paper, room-temperature chemiresistive gas sensors for NO2 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 COx-free decomposition of methane over the Ni/Al2O3 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 NO2 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 NO2 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.

Lapekin N.I. , Kurmashov P.B. , Larina T.V. , Chesalov Y.A. , Kurdyumov D.S. , Ukhina A.V. , Maksimovskiy E.A. , Ishchenko A.V. , Sysoev V.I. , Bannov A.G.
Carbon Nanofibers Synthesized at Different Pressures for Detection of NO2 at Room Temperature
Chemosensors. 2023. V.11. N7. 381 :1-17. DOI: 10.3390/chemosensors11070381 WOS Scopus РИНЦ AN OpenAlex

Submitted:	Mar 30, 2023
Accepted:	Jul 5, 2023
Published print:	Jul 7, 2023
Published online:	Jul 7, 2023

Web of science:	WOS:001038163100001
Scopus:	2-s2.0-85166289335
Elibrary:	54372732
Chemical Abstracts:	2023:1608562
OpenAlex:	W4383722108

DB	Citing
Scopus	3
OpenAlex	4
Web of science	3
Elibrary	1