Single-walled carbon nanotubes filled with sulfur and phosphorus compounds for real-time detection of NO2 in air

Single-walled carbon nanotubes filled with sulfur and phosphorus compounds for real-time detection of NO2 in air Научная публикация

Журнал

Carbon
ISSN: 0008-6223 , E-ISSN: 1873-3891

Вых. Данные

Год: 2025, Том: 233, Номер статьи : 119915, Страниц : 11 DOI: 10.1016/j.carbon.2024.119915

Ключевые слова

Gas sensor, Nitrogen dioxide, Single-walled carbon nanotubes, Filling, Phosphorus, Sulfur

Авторы

Sysoev Vitalii I. ¹ , Sedelnikova Olga V. ¹ , Vorfolomeeva Anna A. ¹ , Geraseva Tatyana A. ¹ , Bulusheva Lyubov G. ¹ , Okotrub Alexander V. ¹

Организации

1	Nikolaev Institute of Inorganic Chemistry, Siberian Branch of Russian Academy of Sciences

Filling cavities in single-walled carbon nanotubes (SWCNTs) opens up additional opportunities for modifying their surface physicochemical properties. Here, we use a vaporization-condensation method to encapsulate individual phosphorus and sulfur and their mixtures and study the effect of filler composition on the gas sensor properties of SWCNTs with respect to nitrogen dioxide exposure. The introduction of a filler leads to significant improvement in the sensor's response to low concentrations of nitrogen dioxide in the air by enhancing charge transfer, reducing the number of adsorption sites inside the bundles/nanotubes, and lowering the adsorption energy. Sensors based on filled SWCNTs exhibit a calculated detection limit of 2–7 ppb NO2 at a response time of less than 1 min, long-term stability of more than one year, and exceptional selectivity to NO2.

Sysoev V.I. , Sedelnikova O.V. , Vorfolomeeva A.A. , Geraseva T.A. , Bulusheva L.G. , Okotrub A.V.
Single-walled carbon nanotubes filled with sulfur and phosphorus compounds for real-time detection of NO2 in air
Carbon. 2025. V.233. 119915 :1-11. DOI: 10.1016/j.carbon.2024.119915 OpenAlex

Принята к публикации:	12 дек. 2024 г.
Опубликована online:	13 дек. 2024 г.
Опубликована в печати:	1 февр. 2025 г.

OpenAlex:

W4405364515

БД	Цитирований
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