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MnO2 decorated graphene nanoribbons with superior permittivity and excellent microwave shielding properties
Abstract
Microwave shielding properties of chemically synthesized MnO2 decorated graphene nanoribbons (GNRs) are reported for the first time. The nature of MnO2 decoration on the GNRs has been investigated using scanning electron microscopy, X-ray diffraction, Raman spectroscopy and high resolution transmission electron microscopy. The electromagnetic interference (EMI) shielding effectiveness of this material was investigated in the microwave region (Ku-band, 12.4–18 GHz). The presence of MnO2 on GNR enhances the interfacial polarization, multiple scattering, natural resonances and the effective anisotropy energy, which leads to absorption dominated high shielding effectiveness of −57 dB (blocking >99.9999% radiation) by a 3 mm thick sample. Dielectric attributes (ε′ and ε′′) were evaluated to understand the mechanism of the excellent shielding effectiveness. The material will be an excellent choice for radar absorbing applications.
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Citations
Cites
Narrow graphene nanoribbons from carbon nanotubes
Jiao, L., Zhang, L., Wang, X., Diankov, G., & Dai, H. (2009) · Nature · doi:10.1038/nature07919 · Cited by 2,441
Cited by
Sankaran, S., Deshmukh, K., Ahamed, M. B., & Khadheer Pasha, S. K. (2018) · Composites Part A: Applied Science and Manufacturing · doi:10.1016/j.compositesa.2018.08.006 · Cited by 837
Xia, Y., Gao, W., & Gao, C. (2022) · Advanced Functional Materials · doi:10.1002/adfm.202204591 · Cited by 734
Dielectric polarization in electromagnetic wave absorption: Review and perspective
Quan, B., Liang, X., Ji, G., Cheng, Y., Liu, W., Ma, J., Zhang, Y., Li, D., & Xu, G. (2017) · Journal of Alloys and Compounds · doi:10.1016/j.jallcom.2017.09.082 · Cited by 677
Toward the Application of High Frequency Electromagnetic Wave Absorption by Carbon Nanostructures
Li, Q., Zhang, Z., Qi, L., Liao, Q., Kang, Z., & Zhang, Y. (2019) · Advanced Science · doi:10.1002/advs.201801057 · Cited by 615
Metadata
- Authors
- Gupta, T. K., Singh, B. P., Singh, V. N., Teotia, S., Singh, A. P., Elizabeth, I., Dhakate, S. R., Dhawan, S. K., & Mathur, R. B.
- Venue
- Journal of Materials Chemistry A
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2014
- Volume
- 2
- Issue
- 12
- Pages
- 4256
- ISSN
- 2050-7488 (ISSN-L)
- 2050-7496
- OpenAlex
- W2050854385
- Cited by
- 232
- References
- 1
- FWCI
- 6.59
- Type
- journal article
- Language
- en
- Open access
- closed
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- Gupta, T. K., Singh, B. P., Singh, V. N., Teotia, S., Singh, A. P., Elizabeth, I., Dhakate, S. R., Dhawan, S. K., & Mathur, R. B. (2014). MnO2 decorated graphene nanoribbons with superior permittivity and excellent microwave shielding properties. Journal of Materials Chemistry A. https://doi.org/10.1039/c3ta14854h
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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