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Doping Graphene by Chemical Treatments Using Acid and Basic Substances
Instituto de Investigaciones en Materiales, UNAM, Distrito Federal, México
Centro de Ciencias Aplicadas y Desarrollo Tecnológico, UNAM, Distrito Federal, México
Instituto de Investigaciones en Materiales, UNAM, Distrito Federal, México
- 1 Instituto de Investigaciones en Materiales, UNAM, Distrito Federal, México
- 2 Centro de Ciencias Aplicadas y Desarrollo Tecnológico, UNAM, Distrito Federal, México
- 3 Instituto de Investigaciones en Materiales, UNAM, Distrito Federal, México
Journal of Materials Science and Chemical Engineering·Volume 03 (2015)·Pages 17–21·Published 29 October 2015·DOI10.4236/msce.2015.310003
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Abstract
We prepared single-layer graphene films through mechanical exfoliation of Kish graphite and chemical vapor deposition techniques. These samples were treated in nitric acid, sulfuric acid, sodium hydroxide and ammonium hydroxide solutions to induce doping. We used Micro Raman Spectroscopy before and after the chemical functionalization to monitor differences in the Raman spectrum. We found shifting for both G and 2D peaks of graphene and a significant upshifting in samples treated with sulfuric acid, similar to those reported for nitric acid.
KeywordsGrapheneDopingFerric NitrateRaman Spectroscopy
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