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Tuning of fluorine content in graphene: towards large-scale production of stoichiometric fluorographene
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SYSNO ASEP 0447781 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Tuning of fluorine content in graphene: towards large-scale production of stoichiometric fluorographene Author(s) Mazánek, V. (CZ)
Jankovský, O. (CZ)
Luxa, J. (CZ)
Sedmidubský, D. (CZ)
Janoušek, Zbyněk (UOCHB-X) RID
Šembera, Filip (UOCHB-X) RID
Mikulics, M. (DE)
Sofer, Z. (CZ)Number of authors 8 Source Title Nanoscale. - : Royal Society of Chemistry - ISSN 2040-3364
Roč. 7, č. 32 (2015), s. 13646-13655Number of pages 10 s. Language eng - English Country GB - United Kingdom Keywords graphite oxide ; doped graphene ; reduction Subject RIV CF - Physical ; Theoretical Chemistry R&D Projects GA15-09001S GA ČR - Czech Science Foundation (CSF) Institutional support UOCHB-X - RVO:61388963 UT WOS 000359234100043 EID SCOPUS 84938827334 DOI 10.1039/c5nr03243a Annotation The availability of well-defined modified graphene derivatives such as fluorographene, graphane, thiographene or hydroxygraphene is of pivotal importance for tuning the resulting material properties in numerous potential applications. A series of fluorinated graphene with various contents of fluorine was synthesized by a simple fluorination procedure in an autoclave with a nitrogen/fluorine atmosphere at different exposure times and temperatures. To investigate the composition, structure and properties all samples were characterized in detail by a number of analytical techniques such as SEM, XRD, EDS, AFM, STEM, combustible elemental analysis, STA, XPS, Raman spectroscopy, UV-VIS spectroscopy and cyclic voltammetry. The fully fluorinated graphene with the overall stoichiometry C1F1.05 had a bright white color indicating a significant change of band-gap. In comparison to other samples such a high concentration of fluorine led to the occurrence of exotic thermal behavior, strong luminescence in the visible spectral region and also the unique super-hydrophobic behavior observed on the material surface. The described tunable fluorination should pave the way to fluorographene based devices with tailored properties. Workplace Institute of Organic Chemistry and Biochemistry Contact asep@uochb.cas.cz ; Kateřina Šperková, Tel.: 232 002 584 ; Jana Procházková, Tel.: 220 183 418 Year of Publishing 2016 Electronic address http://pubs.rsc.org/en/content/articlepdf/2015/nr/c5nr03243a
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