Rapid thermal annealing of nickel-carbon nanowires for graphene nanoribbons formation
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Marković, Zoran M.
Jovanović, Svetlana P.
Kepić, Dejan P.
Holclajtner-Antunović, Ivanka D.
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In this paper, we present a novel method for graphene nanoribbons formation using nickel nanowires as templates. Modification of electrochemical procedure for nickel nanowires synthesis was introduced by implementing graphene quantum dots as a carbon source. Thus, nickel nanowires with graphene quantum dots were prepared. These wires were exposed to rapid thermal annealing at high temperatures (500 degrees C, 700 degrees C and 800 degrees C). During this process carbon atoms dissolve in metal and precipitate to the nickel surface forming nickel-carbon nanowires. Atomic force microscopy, scanning electron microscopy and Raman spectroscopy were characterization methods used for analysis of changes in nickel-carbon nanowires properties depending on the different annealing temperatures. After etching nickel with nitric acid, graphene nanoribbons with average diameters of 32 nm and average lengths of 4 mu m were obtained. (C) 2016 Elsevier B.V. All rights reserved.
Keywords:Graphene nanoribbons / Nickel nanowires / Template synthesis / Graphene quantum dots / Rapid thermal annealing / Photoluminescence
Source:Synthetic Metals, 2016, 218, 43-49
- SASPRO - Mobility Programme of Slovak Academy of Sciences: Supportive Fund for Excellent Scientists (EU-609427)
- Thin films of single wall carbon nanotubes and graphene for electronic application (RS-172003)
- SASPRO Programme [1237/02/02-b], Slovak Academy of Sciences