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Graphene oxide : A No‐Acid Low‐Temperature Synthesis from Graphite
Author(s) -
Pakhira Bholanath,
Samanta Ankit,
Das Gouri S,
Sarkar Sabyasachi
Publication year - 2017
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201700751
Subject(s) - graphene , oxide , derivative (finance) , graphite , graphite oxide , chemistry , nitro , hydrolysis , density functional theory , photochemistry , materials science , combinatorial chemistry , organic chemistry , computational chemistry , nanotechnology , alkyl , financial economics , economics
Graphite responds to nitro addition by NO 2 radical and the nitro derivative isomerizes to energetically favorable nirito form under ambient condition. This derivative readily hydrolyzed in forming poly‐hydroxylated graphene, “graphenol”. The (graph)‐enol responds to irreversible transformation in its keto form with 1,4 hydrogen shift yielding the graphene oxide (GO) as the end product that also possesses C−H bonds. The conventional methodology used in synthesizing GO under strong acid medium inherently follow this NO 2 and similar sigma centric free radical addition reactions. These energy released reactions are supported by density functional theoretical (DFT) calculation.