Title:	Selective methane chemiresistive detection using MWCNTs array decorated by metal organic framework layer
Authors:	Zabelin, Denis Zabelina, Anna Guselnikova, Olga Miliutina, Elena Kolská, Zdeňka Štulík, Jiří Polanský, Radek Elashnikov, Roman Kalachyova, Evgeniia Švorčík, Václav Lyutakov, Oleksiy
Citation:	ZABELIN, D. ZABELINA, A. GUSELNIKOVA, O. MILIUTINA, E. KOLSKÁ, Z. ŠTULÍK, J. POLANSKÝ, R. ELASHNIKOV, R. KALACHYOVA, E. ŠVORČÍK, V. LYUTAKOV, O. Selective methane chemiresistive detection using MWCNTs array decorated by metal organic framework layer. Surfaces and Interfaces, 2023, roč. 40, č. August 2023, s. nestránkováno. ISSN: 2468-0230
Issue Date:	2023
Publisher:	Elsevier
Document type:	článek article
URI:	2-s2.0-85163955915 http://hdl.handle.net/11025/53861
ISSN:	2468-0230
Keywords in different language:	methane detection;multi-walled carbon nanotubes;metal organic framework;chemiresistive materials
Abstract in different language:	Methane as a main component of natural gas, but simultaneously an explosive compound with pronounced negative environmental impact. Therefore, methane should be detected with high precision and reliability. However, the inertness and non-polar nature of methane is limiting its simple detection (e.g., by a chemiresistive approach) living a gap in sensing solution. In this paper, we propose a selective chemiresistive methane sensor consisting of abundant carbon materials (multi-walled carbon nanotubes - MWCNTs) with a metal-organic framework (PCN-14). The sensor is based on decorating a non-ordered array of MWCNTs with PCN-14, which is known to have high selectivity towards methane. The methane molecules are selectively entrapped by PCN-14 pores, which significantly affect the resistance of created hybrid materials. As a result, we could detect methane under air pressure and at room temperature, with a negligible false response from other interfering gases or moisture (except hydrogen or ethane). Despite its extreme simplicity, our chemiresistive sensor does not require chemical reaction or material-destructive binding/oxidation of methane. Therefore, long operation time and sensor stability were expected and experimentally confirmed. Finally, the initial resistance of MWCNTs-PСN-14 hybrid materials was adjusted to be measurable by a portative multimeter range, which makes our approach very simple and technically undemanding.
Rights:	Plný text je přístupný v rámci univerzity přihlášeným uživatelům © Elsevier
Appears in Collections:	Články / Articles (RICE) Články / Articles (KET) OBD

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