Selective methane chemiresistive detection using MWCNTs array decorated by metal organic framework layer

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F23%3A43926956" target="_blank" >RIV/60461373:22310/23:43926956 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/49777513:23220/23:43968918 RIV/44555601:13440/23:43897915

Výsledek na webu

<a href="https://doi.org/10.1016/j.surfin.2023.103105" target="_blank" >https://doi.org/10.1016/j.surfin.2023.103105</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.surfin.2023.103105" target="_blank" >10.1016/j.surfin.2023.103105</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Selective methane chemiresistive detection using MWCNTs array decorated by metal organic framework layer

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

Selective methane chemiresistive detection using MWCNTs array decorated by metal organic framework layer

Popis výsledku anglicky

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.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

20501 - Materials engineering

Projekt

<a href="/cs/project/GA20-03913S" target="_blank" >GA20-03913S: Organické senzory plynů – nové struktury, elektrické parametry, vlastnosti a funkce</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2023

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

SURFACES AND INTERFACES

ISSN

2468-0230

e-ISSN

—

Svazek periodika

40

Číslo periodika v rámci svazku

August 2023

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

8

Strana od-do

"103105/1"-8

Kód UT WoS článku

001032795200001

EID výsledku v databázi Scopus

2-s2.0-85163955915