Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Excellent lightweight carbon-based microwave absorbers derived from metal–organic frameworks with tunable electromagnetic properties

Author affiliations

Abstract

Metal–organic frameworks (MOFs) have attracted extensive interest owing to their tunable compositions and large specific surface areas. Herein, Fe3O4@carbon and Fe3C@carbon composites were fabricated from iron-based MOFs (MIL-53(Fe)) via a facile hydrothermal and calcination process. Based on the Gibbs free energy theory, nanocrystal transformation from Fe3O4 to Fe3C can be well controlled when the calcination temperature is above 689 °C, revealing that the temperature plays key roles in improving the electromagnetic parameters and microwave absorbing performance. Using elaborately designed MIL-53(Fe) as a precursor for carbon-based lightweight microwave absorbers, a minimum reflection loss (RLmin) value of −30.48 dB at a very thin matching thickness of only 1.4 mm and an effective microwave bandwidth of 4.40 GHz (from 13.6 to 18 GHz) can be achieved. It is believed that this work can arouse interest to further exploit metal–organic frameworks for lightweight carbon-based microwave absorbers.

Graphical abstract: Excellent lightweight carbon-based microwave absorbers derived from metal–organic frameworks with tunable electromagnetic properties

Back to tab navigation

Supplementary files

Article information


Submitted
20 Jan 2020
Accepted
11 Mar 2020
First published
11 Mar 2020

Inorg. Chem. Front., 2020, Advance Article
Article type
Research Article

Excellent lightweight carbon-based microwave absorbers derived from metal–organic frameworks with tunable electromagnetic properties

W. Gu, J. Zheng, X. Liang, X. Cui, J. Chen, Z. Zhang and G. Ji, Inorg. Chem. Front., 2020, Advance Article , DOI: 10.1039/D0QI00099J

Social activity

Search articles by author

Spotlight

Advertisements