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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 30, Number 12
BKCSDE 30(12)
December 20, 2009 

 
Title
Characterization of Graphene Sheets Formed by the Reaction of Carbon Monoxide with Aluminum Sulfide
Author
Ilsun Yoon, Chang Duk Kim, Bong Ki Min, Young Ki Kim, Bongsoo Kim, Woo Sik Jung*
Keywords
Graphene sheets, Carbon monoxide, Aluminum sulfide, Raman spectroscopy
Abstract
Graphene sheets formed by the reaction of carbon monoxide (CO) with aluminum sulfide (Al2S3) at reaction temperatures ≥ 800 oC were characterized by X-ray diffraction (XRD), Raman spectroscopy, and high-resolution transmission electron microscopy (HRTEM). The graphene sheets, formed as CO was reduced to gaseous carbon by the reaction with Al2S3, in the temperature range 800 - 1100 oC, did not exhibit their characteristic XRD peaks because of the small number of graphene layers and/or low crystallinity of graphene sheets. Raman spectra of graphene sheets showed that the intensity ratio of the D band to the G band decreased and the 2D band was shifted to higher frequencies with increasing reaction temperature, indicating that the number of graphene layers increased with increasing reaction temperature.
Page
3045 - 3048
Full Text
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