Bi₂Fe₄O₉(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 Bi₂Fe₄O₉/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 Bi₂Fe₄O₉/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.

使用简单易用的水热法按比例制备Bi ₂ Fe ₄ O ₉（BFO）纳米立方体，然后将其组装在还原的氧化石墨烯（rGO）多层板上。通过适当地调整阻抗匹配并获得不同的BFO和rGO比例，可以实现Bi ₂ Fe ₄ O ₉ / rGO纳米杂化物的优异的微波吸收性能。使用Bi ₂ Fe ₄ O ₉在12.8 GHz时获得的最小反射损耗值为-61.5 dB/ rGO比率为2：1，-10 dB以下的最宽带宽高达5.0 GHz（从10.8至15.8 GHz），厚度为2.4 mm。另外，还研究了吸波性能的基本机理。