Amphiphilic aminoclay-RGO hybrids: A simple strategy to disperse a high concentration of RGO in water

A. Achari; K. K.R. Datta; M. De; V. P. Dravid; M. Eswaramoorthy

doi:10.1039/c3nr01108a

Amphiphilic aminoclay-RGO hybrids: A simple strategy to disperse a high concentration of RGO in water

A. Achari, K. K.R. Datta, M. De, V. P. Dravid, M. Eswaramoorthy^*

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

45 Scopus citations

Abstract

The aqueous dispersion of graphene or reduced graphene oxide (RGO) is very much important to realize the full potential of these materials in many fields. Herein we present a simple route to prepare highly water dispersible aminoclay-RGO (AC-RGO) hybrids by the in situ condensation of aminoclay over graphene oxide (GO) followed by reduction with hydrazine hydrate. The resultant hybrids are stable in aqueous media even at concentrations up to 7.5 mg RGO per mL. To the best of our knowledge this is the highest concentration of an aqueous dispersion of RGO. Significantly, the hybrids are amphiphilic in nature and show simultaneous adsorption of Cytochrome C through hydrophobic interaction and DNA through electrostatic interaction. This strategy opens up new possibilities for the prospect of RGO in catalysis and biomedical applications.

Original language	English (US)
Pages (from-to)	5316-5320
Number of pages	5
Journal	Nanoscale
Volume	5
Issue number	12
DOIs	https://doi.org/10.1039/c3nr01108a
State	Published - Jun 21 2013

ASJC Scopus subject areas

Materials Science(all)

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10.1039/c3nr01108a

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AB - The aqueous dispersion of graphene or reduced graphene oxide (RGO) is very much important to realize the full potential of these materials in many fields. Herein we present a simple route to prepare highly water dispersible aminoclay-RGO (AC-RGO) hybrids by the in situ condensation of aminoclay over graphene oxide (GO) followed by reduction with hydrazine hydrate. The resultant hybrids are stable in aqueous media even at concentrations up to 7.5 mg RGO per mL. To the best of our knowledge this is the highest concentration of an aqueous dispersion of RGO. Significantly, the hybrids are amphiphilic in nature and show simultaneous adsorption of Cytochrome C through hydrophobic interaction and DNA through electrostatic interaction. This strategy opens up new possibilities for the prospect of RGO in catalysis and biomedical applications.

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Amphiphilic aminoclay-RGO hybrids: A simple strategy to disperse a high concentration of RGO in water

Abstract

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