Issue 7, 2019
From the journal:

RSC Advances

Controllable reduction of graphene oxide by electron-beam irradiation

Yu Yang,a   Liang Chen,*b   De-Yuan Li,a   Ruo-Bing Yi,a   Jia-Wei Mo,b   Ming-Hong Wu*a  and  Gang Xu ORCID logo *a  

* Corresponding authors

a Shanghai Applied Radiation Institute, Shanghai University, Shanghai 200444, China
E-mail: mhwu@shu.edu.cn, xugang@shu.edu.cn

b Department of Optical Engineering, Zhejiang A&F University, Lin'an, Zhejiang 311300, China
E-mail: liang_chen05@126.com

Abstract

The oxygen content of graphene oxide (GO) is directly related to its physical and chemical properties, such as hydrophilicity, suspension stability, adsorption, and ion-sieving ability of GO membranes. Here, a series of reduced GO (rGO) with C/O atomic ratios from 1.6 to 4.8 were prepared conveniently by electron-beam irradiation (EBI) with irradiation-dose control. Moreover, a single oxygen-containing group, i.e., epoxy or carbonyl, could be retained mainly in the rGO. The interlayer spacing of rGO could be changed from 9.6 Å to 7.4 Å through control of the oxygen content. The prepared rGO exhibited an excellent adsorption effect on Pb(II) ions, and the max adsorption capacity reached 194.76 mg g−1 for rGO with a low irradiation dose (5 kGy), which showed that the ratio of oxygen-containing groups is important for improving the adsorption of rGO in aqueous solution. These results indicated that highly efficient, environmentally friendly, and advanced EBI technology has good potential prospects for use in the large-scale production of rGO with precise control of the oxygen content.

Graphical abstract: Controllable reduction of graphene oxide by electron-beam irradiation

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Article information

DOI
https://doi.org/10.1039/C8RA06797J
Article type
Paper
Submitted
13 Aug 2018
Accepted
14 Jan 2019
First published
25 Jan 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 3597-3604

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Controllable reduction of graphene oxide by electron-beam irradiation

Y. Yang, L. Chen, D. Li, R. Yi, J. Mo, M. Wu and G. Xu, RSC Adv., 2019, 9, 3597 DOI: 10.1039/C8RA06797J

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