Abstract: 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.

Cite: Sysoev V.I. , Bulavskiy M.O. , Pinakov D.V. , Chekhova G.N. , Asanov I.P. , Gevko P.N. , Bulusheva L.G. , Okotrub A.V.
Chemiresistive Properties of Imprinted Fluorinated Graphene Films
Materials. 2020. V.13. N16. 3538 :1-12. DOI: 10.3390/ma13163538 WOS Scopus РИНЦ OpenAlex

Dates:

Submitted:	Jul 16, 2020
Accepted:	Aug 7, 2020
Published online:	Aug 11, 2020

Identifiers:

Web of science:	WOS:000567346000001
Scopus:	2-s2.0-85090030318
Elibrary:	45329776
OpenAlex:	W3048486285

Citing:

DB	Citing
Web of science	17
Scopus	15
Elibrary	16
OpenAlex	15

Altmetrics: