NDLI: Investigation of the effects of temperature and time on reduction of graphene oxide by microwave hydrothermal reactor

Content Provider	Springer Nature Link
Author	KIMIAGAR, SALIMEH RASHIDI, NASIM GHADIM, EHSAN EZZATPOUR
Copyright Year	2015
Abstract	Graphene oxide (GO) sheets were synthesized by modified Hummers method. Microwave hydrothermal reactor (MHR) was applied to reduce graphene oxide. Different temperatures 50 and 180°C were applied to fabricate four samples with 4, 10, 25 and 60 min exposure times. The deoxygenation of the GO sheets after exposure to MHR was revealed by using UV–visible, Fourier transform infrared, X-ray photoelectron spectroscopy (XPS), thermogravimetric analysis (TGA) and Raman spectroscopy. Based on XPS analysis, the O/C ratio of the GO sheets decreased from 49 to 17% after exposure to MHR. On the other hand, characterization by TGA illustrated that the O/C ratio of the GO dramatically decreases after exposure of MHR and reached from 37 to 7%. Raman spectroscopy demonstrated that there was no increase in defects’ density after reduction. The results confirmed that sample with 180°C exposure temperature and 60 min exposure time was reduced completely. Therefore this can help to advance using MHR as the green technique of GO reduction.
Starting Page	1699
Ending Page	1704
Page Count	6
File Format	PDF
ISSN	02504707
Journal	Bulletin of Materials Science
Volume Number	38
Issue Number	7
e-ISSN	09737669
Language	English
Publisher	Indian Academy of Sciences
Publisher Date	2015-12-04
Publisher Institution	Indian Academy of Sciences
Publisher Place	Bangalore, India
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Graphene nanostructures microwave hydrothermal reactor reduction. Materials Science Engineering
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science

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