From 0D to 2D: N-doped carbon nanosheets for detection of alcohol-based chemical vapours
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22310%2F22%3A43924145" target="_blank" >RIV/60461373:22310/22:43924145 - isvavai.cz</a>
Result on the web
<a href="https://pubs.rsc.org/en/content/articlehtml/2022/ra/d2ra03931a" target="_blank" >https://pubs.rsc.org/en/content/articlehtml/2022/ra/d2ra03931a</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1039/d2ra03931a" target="_blank" >10.1039/d2ra03931a</a>
Alternative languages
Result language
angličtina
Original language name
From 0D to 2D: N-doped carbon nanosheets for detection of alcohol-based chemical vapours
Original language description
The application of N-doped carbon nanosheets, with and without embedded carbon dots, as active materials for the room temperature chemoresistive detection of methanol and/or ethanol is presented. The new carbons were made by converting 0D N-doped carbon dots (NCDs) to 2D nitrogen-doped carbon nanosheets by heat treatment (200-700 degrees C). The nanosheets exhibited a lateral size of similar to 3 mu m and a thickness of similar to 12 nm at the highest annealing temperature. Both Raman and TEM analyses showed morphological transitions of the dots to the sheets, whilst XPS analysis revealed transformation of the N-bonding states with increasing temperature. PDF analysis confirmed the presence of defective carbon sheets. Room temperature screening of the chemical vapours of two alcohols (methanol and ethanol), revealed that the structure and the type of N-configuration influenced the detection of the chemical vapours. For instance, the lateral size of the nanosheets and the high charge density N-configurations promoted detection of both methanol and ethanol vapours at good sensitivity (-16.8 x 10(-5) ppm(EtOH)(-1) and 1.2 x 10(-5) ppm(MeOH)(-1)) and low LoD (similar to 44 ppm(EtOH) and similar to 30.3 ppm(MeOH)) values. The study showed that the composite nature as well as the large basal area of the carbon nanosheets enabled generation of adequate defective sites that facilitated easy adsorption of the VOC analyte molecules, thereby eliminating the need to use conducting polymers or the formation of porous molecular frameworks for the alcohol detection.
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
10405 - Electrochemistry (dry cells, batteries, fuel cells, corrosion metals, electrolysis)
Result continuities
Project
<a href="/en/project/GC20-16124J" target="_blank" >GC20-16124J: Two-dimensional layered transition metal dichalcogenides/ nanostructured carbons composites for electrochemical energy storage and conversion</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2022
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
RSC Advances
ISSN
2046-2069
e-ISSN
2046-2069
Volume of the periodical
12
Issue of the periodical within the volume
33
Country of publishing house
GB - UNITED KINGDOM
Number of pages
12
Pages from-to
21440-21451
UT code for WoS article
000835245700001
EID of the result in the Scopus database
2-s2.0-85136959902