Multifunctional Cellulose/rGO/Fe3O4 Composite Aerogels for Electromagnetic Interference Shielding

Chen Y, Poetschke P, Pionteck J, Voit B, Qi H (2020)

Publication Type: Journal article

Publication year: 2020

Journal

ACS Applied Materials and Interfaces American Chemical Society

Book Volume: 12

Pages Range: 22088-22098

Journal Issue: 19

DOI: 10.1021/acsami.9b23052

Abstract

Cellulose/reduced graphene oxide (rGO)/Fe3O4 aerogels exhibiting strong electromagnetic wave absorption were prepared by a green, simple, and scalable coprecipitation process. With rGO loading of 8 wt % and Fe3O4 content of approx. 15 wt %, the electromagnetic interference shielding effectiveness (EMI SE) of the cellulose/rGO/Fe3O4 aerogel with 0.5 mm thickness reached 32.4-40.1 dB at 8.2-12.4 GHz. The EMI shielding performance of cellulose/rGO/Fe3O4 aerogels was higher for larger rGO loading (varied between 3 and 8 wt %) and greatly improved on increasing the sample thickness (varied between 0.5 and 2 mm). At 2.0 mm thickness, SE values of 49.4-52.4 dB were reached. Absorption plays a major role in the EMI shielding mechanism of cellulose/rGO/Fe3O4 aerogels. The multireflection of microwaves and impedance matching provides the highly efficient EMI shielding caused by the combined effects of the porous structure, rGO sheets, and Fe3O4 nanoparticles. The results demonstrate that these lightweight aerogels are suitable for EMI shielding.

Involved external institutions

Leibniz-Institut für Polymerforschung Dresden e. V. DE Germany (DE) South China University of Technology (SCUT) / 华南理工大学 CN China (CN)

How to cite

APA:

Chen, Y., Poetschke, P., Pionteck, J., Voit, B., & Qi, H. (2020). Multifunctional Cellulose/rGO/Fe3O4 Composite Aerogels for Electromagnetic Interference Shielding. ACS Applied Materials and Interfaces, 12(19), 22088-22098. https://doi.org/10.1021/acsami.9b23052

MLA:

Chen, Yian, et al. "Multifunctional Cellulose/rGO/Fe3O4 Composite Aerogels for Electromagnetic Interference Shielding." ACS Applied Materials and Interfaces 12.19 (2020): 22088-22098.

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