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An improved process for the graphene preparation via redox potential control

Published online by Cambridge University Press:  20 June 2019

Yue Zhang  and
Xuanjun Wang
Yue Zhang
Affiliation:
Section 207, Xi’an Research Institute of High-Tech, Xi’an, Shaanxi 710025, People’s Republic of China
Xuanjun Wang*
Affiliation:
Section 207, Xi’an Research Institute of High-Tech, Xi’an, Shaanxi 710025, People’s Republic of China
*
a)Address all correspondence to this author. e-mail: wangxj503@sina.com
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Abstract

The physicochemical properties and broad applications of graphene have been extensively studied, but its preparation method is still a bottleneck, and it cannot simultaneously meet the requirements of low process cost and high quality of products in the time being. In this article, the redox potential was employed to control the quality of graphene prepared from graphene oxide by chemical reduction. The effects of the initial redox potential on the productivity, microscopic morphology, and structural and intrinsic properties of graphene were investigated. Results showed that there was an optimum initial redox potential range between −1200 and −1180 mV. In such a range could the graphene with a high yield be obtained, and layers of graphene products could be stabilized at 1 or 2 layers. Therefore, the redox potential could be used as an effective parameter instead of trying to design orthogonal tests to determine the optimal conditions and control the synthesis of graphene.

Keywords

graphenepreparationredox potentialgraphene oxide
Type
Article
Information
Journal of Materials Research , Volume 34 , Issue 18 , 30 September 2019 , pp. 3212 - 3219
Copyright
Copyright © Materials Research Society 2019 

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