Abstract: Graphene derivatives are promising sensor materials due to their high surface area available for molecule adsorption and conductivity changes under the adsorbate impact. The selectivity of such materials can be tuned through the attaching of certain functional groups preferably interacting with the defined gases. In the present work, we compare the reactivity of graphene oxide, oxyfluorinated graphene, and fluorinated graphene toward gaseous NOx molecules. The interaction of the molecules with the graphene-based films was monitored by in situ X-ray photoelectron and near-edge X-ray absorption fine structure spectroscopy measurements. The spectra before and after exposure of the films to a gaseous NOx mixture detected equal concentrations of adsorbed NO2 and NO species on graphene oxide, the preferable interaction of oxyfluorinated graphene with NO2 and the absence of the adsorbed molecules on the fluorinated graphene surface. These results are useful for the development of selective graphene-based gas sensors.

Cite: Sysoev V.I. , Okotrub A.V. , Gusel'nikov A.V. , Smirnov D.A. , Bulusheva L.G.
In situ XPS Observation of Selective NOx Adsorption on the Oxygenated Graphene Films
Physica Status Solidi B-basic Solid State Physics. 2018. V.255. N1. 1700267 :1-5. DOI: 10.1002/pssb.201700267 WOS Scopus РИНЦ OpenAlex

Dates:

Submitted:	Jun 2, 2017
Published online:	Sep 5, 2017

Identifiers:

Web of science:	WOS:000422746100020
Scopus:	2-s2.0-85040786980
Elibrary:	35497542
OpenAlex:	W2751541028

Citing:

DB	Citing
OpenAlex	22
Web of science	22
Scopus	24
Elibrary	22

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