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Vol. 29 No. 9 (2017): Vol 29 Issue 9

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Contribution of Edge Structure Towards Enhanced Thermal Stability of Graphene-Based Materials

https://doi.org/10.14233/ajchem.2017.20828
Gopal Avashthi
School of Chemical Sciences, Central University of Gujarat, Gandhinagar-382 030, India
Shrikant S. Maktedar
School of Chemical Sciences, Central University of Gujarat, Gandhinagar-382 030, India
Man Singh
School of Chemical Sciences, Central University of Gujarat, Gandhinagar-382 030, India

Corresponding Author(s) : Man Singh

mansingh50@hotmail.com

Asian Journal of Chemistry, Vol. 29 No. 9 (2017): Vol 29 Issue 9

Abstract

An advanced approach for direct covalent functionalization (DCF) of graphene-based material has been developed. The functionalized graphene oxide (f-GO) has been prepared with the robust sonochemical approach with complete deletion of hazardous acylating and coupling reagents. The as-prepared f-GO was extensively characterized with various analytical techniques like near edge X-ray absorption fine structure (NEXAFS), 13C SSNMR, HRXPS, HRTEM, XRD, Raman, AFM, TGA, DSC and FTIR. An investigation of thermal applications of graphene-based materials has been confined due to the conventional thermal instability of graphene oxide (GO). However, DCF through contribution of C_K edges of graphene oxide, have confirmed the significance of f-GO towards enhanced thermal stability. The total percentage weight loss in TG-DTA has confirmed an enhanced thermal stability of f-GO. The contribution of edge structure towards enhanced thermal stability has confirmed with near edge XAFS spectroscopy. The participation of various atomic domains has synergistically contributed towards enhanced thermal stability of f-GO.

Keywords

Covalent functionalization Synergistic impact Thermal stability Near edge X-ray absorption fine structure spectroscopy
Avashthi, G., Maktedar, S. S., & Singh, M. (2017). Contribution of Edge Structure Towards Enhanced Thermal Stability of Graphene-Based Materials. Asian Journal of Chemistry, 29(9), 2065–2068. https://doi.org/10.14233/ajchem.2017.20828
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