AUTHOR=Lu Min , Sun Yuan-Kai , Yang Shu-Hao , Wang Hui-Ya , Guan Xiao-Hui , Wang Guang-Sheng 

TITLE=Three-Dimensional Bi2Fe4O9 Nanocubes Loaded on Reduced Graphene Oxide for Enhanced Electromagnetic Absorbing Properties

JOURNAL=Frontiers in Chemistry

VOLUME=8

YEAR=2020

URL=https://www.frontiersin.org/journals/chemistry/articles/10.3389/fchem.2020.00608

DOI=10.3389/fchem.2020.00608

ISSN=2296-2646

ABSTRACT=<p>Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub>(BFO) nanocubes were prepared in proportion using a simple and easy hydrothermal method, and were then assembled on reduced graphene oxide (rGO) multilayered sheets. The excellent microwave absorption properties of Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub>/rGO nanohybrids were achieved by properly adjusting the impedance matching and getting a high attenuation capability contributed from different ratios of the BFO and rGO. A minimum reflection loss value of −61.5 dB at 12.8 GHz was obtained with a Bi<sub>2</sub>Fe<sub>4</sub>O<sub>9</sub>/rGO ratio of 2:1, and the broadest bandwidth below −10 dB was up to 5.0 GHz (from 10.8 to 15.8 GHz) with a thickness of 2.4 mm. Additionally, the elementary mechanism of wave absorption performance is also investigated.</p>