Journal
MATERIALS LETTERS
Volume 186, Issue -, Pages 78-81Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2016.09.086
Keywords
3D graphene architectures; Carbon nanotubes; Conductivity; Electromagnetic interference shielding; Carbon materials
Funding
- National Natural Science Foundation of China [11575126, 51502202]
- Natural Science Foundation of Tianjin [16JCZDJC37800]
- Science and Technology Plans of Tianjin [15PTSYJC00230]
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In this work, we reported a green approach for synthesis of large-scale and low cost three dimensional graphene/polyacrylamide/multi-walled carbon nanotubes (3DGPW) architectures by y-ray irradiation. Multi walled carbon nanotubes were used to reduce free radicals and avoid defects brought into graphene during irradiation process. Meanwhile two kinds of conductive networks in the architecture were made up by graphene sheets and multi-walled carbon nanotubes. With the help of free radical scavenger and two kinds of conductive network structures, a remarkable conductivity of 3344.5 S/m was achieved for 3DGPW, which was 20 folds higher than that achieved for three dimensional graphene/ polyacrylamide architectures. In addition, the average value of the electromagnetic interference shielding increased from 9.8 to 24.6 dB. Therefore, the designed 3DGPW architectures could be considered as promising candidates for applications electromagnetic interference shielding materials.
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