Research output: Contribution to journal › Article › peer-review
In situ XPS Observation of Selective NOx Adsorption on the Oxygenated Graphene Films. / Sysoev, Vitalii I.; Okotrub, Alexander V.; Gusel'nikov, Artem V. et al.
In: Physica Status Solidi (B) Basic Research, Vol. 255, No. 1, 1700267, 01.01.2018.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - In situ XPS Observation of Selective NOx Adsorption on the Oxygenated Graphene Films
AU - Sysoev, Vitalii I.
AU - Okotrub, Alexander V.
AU - Gusel'nikov, Artem V.
AU - Smirnov, Dmitry A.
AU - Bulusheva, Lyubov G.
PY - 2018/1/1
Y1 - 2018/1/1
N2 - 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.
AB - 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.
KW - graphene oxide
KW - NO adsorption
KW - oxyfluorinated graphene
KW - XPS
KW - OXIDE
KW - AMMONIA
KW - NITROGEN
KW - NH3
KW - NANOSHEETS
KW - GRAPHITE
KW - NOx adsorption
KW - CO
UR - http://www.scopus.com/inward/record.url?scp=85040786980&partnerID=8YFLogxK
U2 - 10.1002/pssb.201700267
DO - 10.1002/pssb.201700267
M3 - Article
AN - SCOPUS:85040786980
VL - 255
JO - Physica Status Solidi (B): Basic Research
JF - Physica Status Solidi (B): Basic Research
SN - 0370-1972
IS - 1
M1 - 1700267
ER -
ID: 12099909