Green conversion of graphene oxide to graphene nanosheets and its biosafety study.
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.
Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, Kolkata, West Bengal, India.
Adhiraj
A
Dasgupta
Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, Kolkata, West Bengal, India.|Department of Botany, Dinabandhu Andrews College, Garia, Kolkata, West Bengal, India.
Joy
J
Sarkar
Cell Biology & Genetic Toxicology Laboratory, Centre of Advanced Study in Cell & Chromosome Research, Department of Botany, University of Calcutta, Kolkata, West Bengal, India.
Manosij
M
Ghosh
Department of Polymer Science & Technology, University College of Science & Technology, University of Calcutta, Kolkata, West Bengal, India.
Amartya
A
Bhattacharya
Cell Biology & Genetic Toxicology Laboratory, Centre of Advanced Study in Cell & Chromosome Research, Department of Botany, University of Calcutta, Kolkata, West Bengal, India.
Anita
A
Mukherjee
Department of Polymer Science & Technology, University College of Science & Technology, University of Calcutta, Kolkata, West Bengal, India.
Dipankar
D
Chattopadhyay
Molecular and Applied Mycology and Plant Pathology Laboratory, Department of Botany, University of Calcutta, Kolkata, West Bengal, India.|Center for Research in Nanoscience & Nanotechnology, Technology Campus, University of Calcutta, Kolkata, West Bengal, India.
Krishnendu
http://orcid.org/0000-0003-1193-1823
K
Acharya
D006108:Graphite / Q000737:chemistry*; D055772:Green Chemistry Technology / Q000379:methods*; D046529:Microscopy, Electron, Transmission; D010084:Oxidation-Reduction; D010087:Oxides / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman
D010087:Oxides; D006108:Graphite