Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 9, Issue 47, Pages 26839-26851Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d1ta08788f
Keywords
-
Funding
- National Key Research and Development Program of China [2017YFA0204600]
- 2020 Industry-University-Research Project of Qingpu District Science and Technology Commission of Shanghai
- National Natural Science Foundation of China (NSFC) [51872313]
Ask authors/readers for more resources
A novel, green, and facile plasmolysis-inspired route was developed to fabricate yolk-shell hydrogel-core@void@MXene-shell nanocomposite microspheres, which showed excellent electromagnetic interference shielding effectiveness.
Benefiting from a specific multilayered structure, yolk-shell microspheres with void spaces are considered promising electromagnetic shielding materials which do well in enhancing the decay of electromagnetic waves. Commonly reported synthesis methods of yolk-shell nanostructures include sacrificial templates and tedious subsequential treatment. In this work, a novel, green and facile plasmolysis-inspired route was developed to fabricate uniform yolk-shell hydrogel-core@void@MXene-shell (poly(N-isopropylacrylamide)@void@polystyrene@MXene, abbreviated to PNIPAM@void@PS@Ti3C2Tx) nanocomposite microspheres. The void space between the PNIPAM core and the PS supporting layer was created on the basis of the shrinkage of the soft PNIPAM hydrogel core due to the removal of water in the hydrogel. In addition, a microsphere model was developed to predict that the void space can modulate the impedance matching to attenuate the reflection of electromagnetic waves on the surface of the microsphere and enhance the entry of electromagnetic waves. Ultrathin hydrogel-core@void@MXene-shell (PNIPAM@void@PS@Ti3C2Tx) self-supporting films could be prepared via filtration-drying of PNIPAM@PS@Ti3C2Tx nanocomposite microspheres. The 25 mu m ultrathin nanocomposite film showed excellent electromagnetic interference (EMI) shielding effectiveness of 72 dB at 9.5 GHz and exhibited a wide absorption spectral range from 8.2 GHz to 12.4 GHz (>30 dB). The electromagnetic parameters of the equivalent medium model are obtained through the retrieval algorithm of the actually measured S-parameters, and models were constructed to simulate and explain the electromagnetic shielding performance.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available