Graphene nanosheets: Ultrasound assisted synthesis and characterization

Karthikeyan Krishnamoorthy; Gui-Shik Kim; Sang Jae Kim

doi:10.1016/j.ultsonch.2012.09.007

Graphene nanosheets: Ultrasound assisted synthesis and characterization

Ultrason Sonochem. 2013 Mar;20(2):644-9. doi: 10.1016/j.ultsonch.2012.09.007. Epub 2012 Sep 27.

Authors

Karthikeyan Krishnamoorthy¹, Gui-Shik Kim, Sang Jae Kim

Affiliation

¹ Nanomaterials and System Lab, Department of Mechanical System Engineering, Jeju National University, Jeju 690-756, Republic of Korea.

PMID: 23089166
DOI: 10.1016/j.ultsonch.2012.09.007

Abstract

A facile sonochemical route for the synthesis of graphene nanosheets via reduction of graphene oxide (GO) has been reported. The synthesized graphene sheets are characterized using UV-vis spectra, Fourier transform infra-red (FT-IR) spectra, transmission electron microscope, X-ray photoelectron spectra (XPS) and Raman spectroscopic techniques. The UV-vis spectroscopy results showed that the absorption peak was red shifted due to the reduction of GO into graphene. FT-IR and XPS spectra revealed the removal of oxygenated functional groups in graphene after the reduction process. Raman spectra confirmed the restoration of new sp(2) carbon domains in graphene sheets after the reduction. The sonochemical approach for the synthesis of graphene nanosheets is relatively fast, cost-effective and efficient as compared to other methods.