A multifunctional covalently linked graphene-MOF hybrid as an effective chemiresistive gas sensor
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27640%2F21%3A10247777" target="_blank" >RIV/61989100:27640/21:10247777 - isvavai.cz</a>
Alternative codes found
RIV/61989100:27740/21:10247777 RIV/61989592:15640/21:73610649
Result on the web
<a href="https://pubs.rsc.org/en/content/articlelanding/2021/TA/D1TA03246A" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2021/TA/D1TA03246A</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d1ta03246a" target="_blank" >10.1039/d1ta03246a</a>
Alternative languages
Result language
angličtina
Original language name
A multifunctional covalently linked graphene-MOF hybrid as an effective chemiresistive gas sensor
Original language description
A hybrid of GA@UiO-66-NH2 was synthesized based on the covalent assembly of graphene acid (GA) and the amine functionalized UiO-66 metal-organic framework through amide bonds. This strategy endows the material with unique properties, such as hierarchical pores, a porous conductive network decorated with functional groups, a high specific surface area, and a good chemical and thermal stability. The resultant hybrid has an electrical resistance of similar to 10(4) omega, whereas the pristine GA and UiO-66-NH2 possess an electrical resistance of similar to 10(2) omega and similar to 10(9) omega, respectively. The hybrid GA@UiO-66-NH2 was demonstrated for CO2 chemiresistive sensing and displayed a very fast response and quick recovery time of similar to 18 s for 100% CO2, at 200 degrees C. While the pristine GA exhibits negligible response under the same conditions, GA@UiO-66-NH2 exhibited a response of 10 +/- 0.6%. Further, in situ temperature dependent Raman studies during CO2 exposure confirm the presence of strong hydrogen bonding interaction between CO2 and the amide functionality present on GA@UiO-66-NH2. The resulting gas sensing characteristics of GA@UiO-66-NH2 are majorly attributed to the better interaction of CO2 at the amide/amine functional groups and the readily accessible hierarchical pores. This design strategy opens new horizons in the development of covalently linked hybrids with hierarchical porous conductive networks which can help to improve the gas sensing properties of MOF-based materials.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10403 - Physical chemistry
Result continuities
Project
Result was created during the realization of more than one project. More information in the Projects tab.
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Materials Chemistry A
ISSN
2050-7488
e-ISSN
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Volume of the periodical
9
Issue of the periodical within the volume
32
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
17434-17441
UT code for WoS article
000681724800001
EID of the result in the Scopus database
2-s2.0-85113263817