Journal of Radiation Research and Radiation Proces ›› 2018, Vol. 36 ›› Issue (4): 40301-040301.doi: 10.11889/j.1000-3436.2018.rrj.36.040301

• RADIATION CHEMISTRY • Previous Articles     Next Articles

One-step radiation-induced synthesis of Ag/o-MWCNT/rGO nanocomposites for electromagnetic interference shielding

HUANG Furong, WANG Yimeng, CHEN Xibang, LI Jiuqiang, PENG Jing, ZHAI Maolin   

  1. Beijing National Laboratory for Molecular Sciences, Radiochemistry and Radiation Chemistry Key Laboratory of Fundamental Science, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
  • Received:2018-04-02 Revised:2018-05-12 Online:2018-08-20 Published:2018-08-18
  • Supported by:

    Supported by National Natural Science Foundation of China (11575009, 11505011, 11375019)

Abstract:

Herein, silver nitrate, oxidized multiwall carbon nanotube (o-MWCNT), and graphene oxide (GO) were used to synthesize silver/oxidized multiwall carbon nanotube/reduced graphene oxide (Ag/o-MWCNT/rGO) nanocomposites in aqueous solution by one-step gamma radiation-induced reduction at room temperature. Scanning electron micrograph, transmission electron micrograph, X-ray diffraction spectrogram, Raman spectra, ultraviolet-visible absorption spectrum, and X-ray photoelectron spectroscopy confirmed that the structure of Ag/o-MWCNT/rGO nanocomposite prepared under the optimized condition was flower-like, in which GO was reduced to rGO by gamma-irradiation. Nano-silver was dispersed uniformly in the nanocomposite with an average diameter of~102 nm. The introduction of o-MWCNT can increase the interlayer spacing of GO and overcome its restacking, leading to the formation of conductive networks. We decorated the o-MWCNT/rGO with nano-silver, to improve the electromagnetic interference (EMI) shielding effectiveness (SE) of nanocomposites. Ag/o-MWCNT/rGO nanocomposite with high EMI SE will be an attractive candidate for EMI shielding purpose.

Key words: Nano-silver, Oxidized multiwall carbon nanotube (o-MWCNT), Reduced graphene oxide (rGO), Radiation-induced reduction, Electromagnetic interference (EMI) shielding

CLC Number: 

  • O613.71