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

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

doi:10.11889/j.1000-3436.2018.rrj.36.040301

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

RADIATION CHEMISTRY | 更新时间：2021-12-10

- One-step radiation-induced synthesis of Ag/o-MWCNT/rGO nanocomposites for electromagnetic interference shielding
- Journal of Radiation Research and Radiation Processing Vol. 36, Issue 4, (2018)
- 作者机构：
  
  1.北京大学化学与分子工程学院放射化学与辐射化学重点学科实验室北京分子科学国家研究中心北京 100871
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(11575009);National Natural Science Foundation of China(11505011);National Natural Science Foundation of China(11375019)
- DOI：10.11889/j.1000-3436.2018.rrj.36.040301
  CLC：
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Furong HUANG, Yimeng WANG, Xibang CHEN, et al. One-step radiation-induced synthesis of Ag/o-MWCNT/rGO nanocomposites for electromagnetic interference shielding. [J]. Journal of Radiation Research and Radiation Processing 36(4):040301-9(2018)
DOI：

Furong HUANG, Yimeng WANG, Xibang CHEN, et al. One-step radiation-induced synthesis of Ag/o-MWCNT/rGO nanocomposites for electromagnetic interference shielding. [J]. Journal of Radiation Research and Radiation Processing 36(4):040301-9(2018) DOI： 10.11889/j.1000-3436.2018.rrj.36.040301.

摘要

以硝酸银、氧化碳纳米管(o-MWCNT)和氧化石墨烯(GO)为原料，采用辐射还原一步法在水溶液中成功制备了银/氧化碳纳米管/还原氧化石墨烯(Ag/o-MWCNT/rGO)复合材料。通过扫描电镜、透射电镜、X射线衍射谱图、拉曼光谱、紫外-可见吸收光谱、X射线光电子能谱等表征手段，证实了优化合成的Ag/o-MWCNT/rGO纳米复合材料为花状结构，银纳米粒子在碳材料中分散均匀，平均粒径约为102 nm，GO被还原为rGO。在合成的纳米复合材料中，o-MWCNT可以增加rGO的层间距，防止其堆积，同时促进导电网络的形成，而且银纳米粒子也有利于提高电磁屏蔽效能。电磁屏蔽结果表明，辐射还原法制备的Ag/o-MWCNT/rGO纳米复合材料具有良好的性能，有望用于制备高性能的电磁屏蔽材料。

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 spectrum, 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.

关键词

纳米银氧化碳纳米管还原氧化石墨烯辐射还原电磁屏蔽

Keywords

Nano-silverOxidized multiwall carbon nanotube (o-MWCNT)Reduced graphene oxide (rGO)Radiation-induced reductionElectromagnetic interference (EMI) shielding

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