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allied
academies
February 18-19, 2019 | Paris, France
Joint Event
Green Chemistry and Technology
8
th
World Congress on
International Conference on
Organic and Inorganic Chemistry
Journal of Industrial and Environmental Chemistry| Volume: 3
Formation of functionalized graphene by submerged liquid plasma process
Jaganathan Senthilnathan
Indian Institute of Technology, India
R
ecently, graphene has been emerged as a smart material
specifically in the field of materials chemistry due to its
remarkablemechanicalflexibility,opticaltransparency,electrical
and thermal conductivity. Functionalization of graphene is an
important route to increase its dispersibility and stability in
aqueous and/or organic solvents. Graphene oxide (GO) and
reduced graphene oxides (r-GO) have been extensively studied
by various research groups, but the major short come are (i)
increase of oxygen in graphene domain increases the number
of sp
3
carbon, (ii) high content of sp
3
carbon restricts electron
mobility and leads to poor electrical properties, (iii) presence
of sp
3
carbon reduces the conductivity and amplifying dis-
orderness in graphene domain. Similarly, studies have been
done on the formation of chemically modified graphene with
organic moieties such as polyaniline, amino acids etc., by π–π
stacking and/or van der Waals interactions. The strength of
graphene hybrids or composite are highly vulnerable and their
long-termassociationwithgraphene is thushighlyquestionable.
In addition, large-scale synthesis of functionalized graphene
should use a sustainable, economical, and eco-friendly process.
In this study we have successfully demonstrated the formation
of highly dispersive nitrogen functionalized graphene (N-FG)
and nitrogen functionalized r-GO by submerged liquid plasma
(SLP) process at ambient condition. Advantages of the SLP
process include a simple setup, minimal surface damage due to
fast moving electrons, no required further purification, possible
large-scale synthesis, low operating cost and eco-friendliness.
N-FG shows greater stability and electrical conductivity due
to the presence of pyridinic and pyrrolic nitrogen. Raman
spectrum confirms only marginal increase in dis-orderness
when compared to the graphene and displayed remarkable
dispersibilityinbothaqueousandorganicsolvents.Furthermore,
fluorescence property of N-FG confirms the presence of
-NH and -N=C- at the graphene sites, as supported by UV-Vis
spectrometry and X-ray photoelectron spectroscopy studies.
e:
jsn@iitm.ac.inJ Ind Environ Chem 2019, Volume 3
DOI: 10.4066/2591-7331-C1-009