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Green conversion of graphene oxide to graphene nanosheets and its biosafety study
A DASGUPTA, J SARKAR, M GHOSH, A BHATTACHARYA, A MUKHERJEE, ,
Published in Public Library of Science
2017
PMID: 28158272
Volume: 12
   
Issue: 2
Abstract
Chemical reduction of graphene oxide (GO) to graphene employs the use of toxic and environmentally harmful reducing agents, hindering mass production of graphene which is of tremendous technological importance. In this study we report a green approach to the synthesis of graphene, bio-reduced by crude polysaccharide. The polysaccharide reduces exfoliated GO to graphene at room temperature in an aqueous medium. Transmission electron microscopy image provides clear evidence for the formation of few layer graphene. Characterization of the resulting polysaccharide reduced GO by Raman spectroscopy, Fourier transform infrared spectroscopy and Energy dispersive X-ray analysis confirms reduction of GO to graphene. We also investigated the degree of biosafety of the reduced GO and found it to be safe under 100 μg/ml. © 2017 Dasgupta et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
About the journal
JournalPLoS ONE
PublisherPublic Library of Science
ISSN1932-6203
Open AccessNo