(380f) Effect of Temperature on the Structural Parameter of Graphene Oxide | AIChE

(380f) Effect of Temperature on the Structural Parameter of Graphene Oxide


Das, P. - Presenter, IIT Guwahati
Gumma, S. - Presenter, Indian Institute of Technology Tirupati
Mandal, B., Indian Institute of Technology Guwahati
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oxide (GO) is an atomic sheet of graphite
decorated by several oxygenated functional groups on its basal planes and at
its edges such as hydroxyl, epoxy group and carbonyl groups. It has a
high aspect ratio (>1000), easy surface functionalization, and high thermal
and mechanical properties. GO is a functional
derivative of graphene, is generated directly via oxidation of graphite.
The most common description of GO involves the coexistence of sp2
carbon islands and sp3 carbon regions featuring oxygen containing

the present work, GO nanosheets has been prepared
from graphite powder using a modified Hummer’s methodat various
temperatures between 30°C to 110°C. The structure and
morphological aspects of synthesized white">nanosheets are
characterized using Raman
spectroscopy, X-ray diffraction (XRD), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy
(FTIR), electron microscopic (FESEM /TEM). 12.0pt;line-height:150%;font-family:" times new roman en-in>High-magnification TEM 12.0pt;line-height:150%;font-family:" times new roman>micrograph represent the layer morphology of graphene oxide .The
D band (at 1371 cm−1) and G band (at 1590 cm−1)
peck intensity gradually decreases 12.0pt;line-height:150%;font-family:" times new roman>with increase in
synthesis temperature and it completely disappear at 110°C.  It suggests that with increasing the synthesis
temperature the GO become completely amorphous in nature.