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Chemiresistive properties of imprinted fluorinated graphene films. / Sysoev, Vitalii I.; Bulavskiy, Mikhail O.; Pinakov, Dmitry V. и др.
в: Materials, Том 13, № 16, 3538, 11.08.2020.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Chemiresistive properties of imprinted fluorinated graphene films
AU - Sysoev, Vitalii I.
AU - Bulavskiy, Mikhail O.
AU - Pinakov, Dmitry V.
AU - Chekhova, Galina N.
AU - Asanov, Igor P.
AU - Gevko, Pavel N.
AU - Bulusheva, Lyubov G.
AU - Okotrub, Alexander V.
N1 - Publisher Copyright: © 2020 by the authors. Copyright: Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/8/11
Y1 - 2020/8/11
N2 - The electrical conductivity of graphene materials is strongly sensitive to the surface adsorbates, which makes them an excellent platform for the development of gas sensor devices. Functionalization of the surface of graphene opens up the possibility of adjusting the sensor to a target molecule. Here, we investigated the sensor properties of fluorinated graphene films towards exposure to low concentrations of nitrogen dioxide NO2. The films were produced by liquid-phase exfoliation of fluorinated graphite samples with a composition of CF0.08, CF0.23, and CF0.33. Fluorination of graphite using a BrF3/Br2 mixture at room temperature resulted in the covalent attachment of fluorine to basal carbon atoms, which was confirmed by X-ray photoelectron and Raman spectroscopies. Depending on the fluorination degree, the graphite powders had a different dispersion ability in toluene, which affected an average lateral size and thickness of the flakes. The films obtained from fluorinated graphite CF0.33 showed the highest relative response ca. 43% towards 100 ppm NO2 and the best recovery ca. 37% at room temperature.
AB - The electrical conductivity of graphene materials is strongly sensitive to the surface adsorbates, which makes them an excellent platform for the development of gas sensor devices. Functionalization of the surface of graphene opens up the possibility of adjusting the sensor to a target molecule. Here, we investigated the sensor properties of fluorinated graphene films towards exposure to low concentrations of nitrogen dioxide NO2. The films were produced by liquid-phase exfoliation of fluorinated graphite samples with a composition of CF0.08, CF0.23, and CF0.33. Fluorination of graphite using a BrF3/Br2 mixture at room temperature resulted in the covalent attachment of fluorine to basal carbon atoms, which was confirmed by X-ray photoelectron and Raman spectroscopies. Depending on the fluorination degree, the graphite powders had a different dispersion ability in toluene, which affected an average lateral size and thickness of the flakes. The films obtained from fluorinated graphite CF0.33 showed the highest relative response ca. 43% towards 100 ppm NO2 and the best recovery ca. 37% at room temperature.
KW - Adsorption
KW - Fluorinated graphene
KW - Gas sensor
KW - Nitrogen dioxide
KW - Resistivity
KW - adsorption
KW - OXIDE
KW - AMMONIA
KW - PERFORMANCE
KW - fluorinated graphene
KW - gas sensor
KW - NANOSHEETS
KW - GRAPHITE
KW - FLUOROGRAPHENE
KW - LAYERS
KW - nitrogen dioxide
KW - PLASMA
KW - GAS SENSOR
KW - resistivity
UR - http://www.scopus.com/inward/record.url?scp=85090030318&partnerID=8YFLogxK
U2 - 10.3390/MA13163538
DO - 10.3390/MA13163538
M3 - Article
AN - SCOPUS:85090030318
VL - 13
JO - Materials
JF - Materials
SN - 1996-1944
IS - 16
M1 - 3538
ER -
ID: 25286859