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Statements

Subject Item
n2:RIV%2F60461373%3A22310%2F14%3A43897478%21RIV15-MSM-22310___
rdf:type
skos:Concept n18:Vysledek
rdfs:seeAlso
http://pubs.rsc.org/en/content/articlehtml/2014/tc/c4tc00395k
dcterms:description
Functionalization of graphene with heteroatoms is of paramount interest. Doping of graphene materials with electron withdrawing groups leads to the opening of the band gap which further results in a change of its electronic and electrochemical properties. Fluorine exhibits the largest electronegativity and thus it is expected that fluorographenes will have significantly different properties from graphene. Fluorinated graphene was prepared by a scalable method using thermal treatments (at different temperatures) or microwave plasma exfoliation of graphite oxides (prepared via chlorate or permanganate routes) in atmospheres containing SF6, SF4 or MoF6 fluorination agents. We characterized the resulting fluorographenes by scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, combustible elemental analysis and cyclic voltammetry. It was observed that with increasing fluorine content the heterogeneous electron transfer rates increased. The scalable fluorination of graphene with relatively low-toxic agents which yields high-performance electrochemical materials should find many applications in electrochemical devices, such as sensors or supercapacitors. Functionalization of graphene with heteroatoms is of paramount interest. Doping of graphene materials with electron withdrawing groups leads to the opening of the band gap which further results in a change of its electronic and electrochemical properties. Fluorine exhibits the largest electronegativity and thus it is expected that fluorographenes will have significantly different properties from graphene. Fluorinated graphene was prepared by a scalable method using thermal treatments (at different temperatures) or microwave plasma exfoliation of graphite oxides (prepared via chlorate or permanganate routes) in atmospheres containing SF6, SF4 or MoF6 fluorination agents. We characterized the resulting fluorographenes by scanning electron microscopy, Raman spectroscopy, X-ray photoelectron spectroscopy, combustible elemental analysis and cyclic voltammetry. It was observed that with increasing fluorine content the heterogeneous electron transfer rates increased. The scalable fluorination of graphene with relatively low-toxic agents which yields high-performance electrochemical materials should find many applications in electrochemical devices, such as sensors or supercapacitors.
dcterms:title
Fluorographenes via thermal exfoliation of graphite oxide in SF6, SF4 and MoF6 atmospheres Fluorographenes via thermal exfoliation of graphite oxide in SF6, SF4 and MoF6 atmospheres
skos:prefLabel
Fluorographenes via thermal exfoliation of graphite oxide in SF6, SF4 and MoF6 atmospheres Fluorographenes via thermal exfoliation of graphite oxide in SF6, SF4 and MoF6 atmospheres
skos:notation
RIV/60461373:22310/14:43897478!RIV15-MSM-22310___
n3:aktivita
n16:S
n3:aktivity
S
n3:cisloPeriodika
26
n3:dodaniDat
n8:2015
n3:domaciTvurceVysledku
n9:3148262 n9:3177106
n3:druhVysledku
n14:J
n3:duvernostUdaju
n11:S
n3:entitaPredkladatele
n6:predkladatel
n3:idSjednocenehoVysledku
17108
n3:idVysledku
RIV/60461373:22310/14:43897478
n3:jazykVysledku
n19:eng
n3:klicovaSlova
BORON; FLUORINATION; OXYGEN REDUCTION; HYDROGENATED GRAPHENE; SULFUR-DOPED GRAPHENE; REDUCED GRAPHENE OXIDE
n3:klicoveSlovo
n5:REDUCED%20GRAPHENE%20OXIDE n5:SULFUR-DOPED%20GRAPHENE n5:OXYGEN%20REDUCTION n5:HYDROGENATED%20GRAPHENE n5:BORON n5:FLUORINATION
n3:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n3:kontrolniKodProRIV
[48AADE83B4B9]
n3:nazevZdroje
Journal of Materials Chemistry C
n3:obor
n13:CA
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:rokUplatneniVysledku
n8:2014
n3:svazekPeriodika
2
n3:tvurceVysledku
Sofer, Zdeněk Poh, Hwee Ling Klímová, Kateřina Pumera, Martin
n3:wos
000337786900019
s:issn
2050-7526
s:numberOfPages
10
n17:doi
10.1039/c4tc00395k
n12:organizacniJednotka
22310