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Title: Preparation of graphene-Fe{sub 3}O{sub 4} nanocomposites using Fe{sup 3+} ion-containing magnetic ionic liquid

Graphene-Fe{sub 3}O{sub 4} (GN-Fe{sub 3}O{sub 4}) magnetic nanocomposites were prepared, GN-coated magnetic ionic liquid (MIL) as its precursors, which were used as both a magnetic resource and solvent. The method has proved to be valuable for the Fe{sub 3}O{sub 4} nanoparticles (NPs) well dispersed in the solution through strong interactions with GN, which are of interest because of their stability and chemical properties. In the process, strong interactions creates a condition for uniform dispersion in GN and [BMIm]FeCl{sub 4} (MIL) solution, and accelerate the formation of Fe{sub 3}O{sub 4} NPs. A transmission electron microscopy image has shown that the as-formed Fe{sub 3}O{sub 4} NPs with a diameter as small as 5–7 nm were deposited on GN sheets. Furthermore, the final material showed a superior properties than conventional method, which can be ascribed to the fact that [BMIm]FeCl{sub 4} plays a vital role in the process of producing small NPs size.
Authors:
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Publication Date:
OSTI Identifier:
22420622
Resource Type:
Journal Article
Resource Relation:
Journal Name: Materials Research Bulletin; Journal Volume: 59; Other Information: Copyright (c) 2014 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; CHEMICAL PROPERTIES; FERRITES; GRAPHENE; IRON CHLORIDES; IRON IONS; LIQUIDS; MOLTEN SALTS; NANOCOMPOSITES; NANOPARTICLES; PHASE STABILITY; SOLVENTS; TRANSMISSION ELECTRON MICROSCOPY