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Fabrication of graphene by bromine-intercalation and sonochemical exfoliation
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Materials Chemistry, Inorganic Chemistry. (oorganisk kemi)
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Experimental Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Experimental Physics.
Uppsala University, Disciplinary Domain of Science and Technology, Chemistry, Department of Biochemistry and Organic Chemistry.
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2009 (English)Conference paper, Published paper (Refereed)
Abstract [en]

We present a method of producing suspensions of graphene sheets by combining intercalation and mild sonication. Ultrasonic treatment of graphite leads to the formation of small graphene-like flakes in solution. The delamination of the graphite is dramatically increased by intercalation of bromine. After ultrasonic treatment, large amounts of graphene-like flakes with varying thickness are observed in SEM and TEM. They can be adsorbed onto a surface of a suitable substrate by a simple dipping technique. The effect of polar and non-polar solvents as well as adsorption of the graphene on hydrophobic and hydrophilic substrates will be demonstrated and compared. Finally, the general approach of using ultrasonic treatment and intercalation as a facile route to graphene synthesis compared to other methods will be discussed.

Place, publisher, year, edition, pages
2009.
National Category
Inorganic Chemistry Engineering and Technology
Research subject
Inorganic Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-109424OAI: oai:DiVA.org:uu-109424DiVA: diva2:272434
Conference
Graphene Week, 2-7 March 2009, Obergurgl, Austria
Note

Department of Materials Chemistry, Ångström Laboratory, Uppsala University, PO Box 538, SE-752 21 Uppsala, Sweden

Available from: 2009-10-15 Created: 2009-10-15 Last updated: 2016-04-14

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Rubino, StefanoLeifer, KlausJansson, Ulf

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