Journal of Radiation Research and Radiation Proces ›› 2018, Vol. 36 ›› Issue (1): 10302-010302.doi: 10.11889/j.1000-3436.2018.rrj.36.010302

• RADIATION CHEMISTRY • Previous Articles     Next Articles

Preparation of reduced graphene oxide via gamma-ray irradiation

LI Jihao1, HUANG Zeru2, HUANG Weibing1   

  1. 1. Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, China;
    2. High School Affiliated to Shanghai Jiao Tong University, Shanghai 200439, China
  • Received:2017-12-05 Revised:2018-01-15 Online:2018-02-20 Published:2018-02-08
  • Supported by:

    Supported by National Natural Science Foundation of China (11505270)

Abstract:

We report here a rapid and cost-effective approach for reduction and functionalization of graphene oxide (GO) using ethylenediamine (EDA) in water medium by gamma-ray irradiation in a nitrogen atmosphere. The reduction degree, which can be controlled by varying the absorbed doses (5.3, 15, 20, and 35.3 kGy), was investigated in detail by ultra-violet visible (UV-vis) spectroscopy, Fourier transform infrared spectroscopy (FT-IR), X-ray diffract meter (XRD), X-ray photoelectron spectroscopy (XPS), and thermogravimetric analysis (TGA). It was found that the GO dispersion changed from yellow to black with increasing absorbed doses. The results of FT-IR, UV-vis, TGA, and XPS demonstrated that the reduction degree increased with absorbed dose and modification of GO with N-H from EDA molecules occurred. The rGO dispersion in water was stable without precipitate. The ratio of C/O reached 7.21 in rGO-at 35.3 kGy. In addition, a reduction mechanism for determining interactions among the EDA molecules, active radicals from the radiolysis of water, oxygen-containing groups on GO sheets, and some EDA molecules attached onto the rGO sheet because of the recombination of radicals is proposed.

Key words: Reduced graphene oxide, Graphene oxide, Gamma-ray, Ethylenediamine

CLC Number: 

  • TL13