Enhanced electromagnetic wave absorption of nanoporous Fe3O4 @ carbon composites derived from metal-organic frameworks. (February 2019)

• Record Type: Journal Article
• Authors: Xiang, Zhen; Song, Yiming; Xiong, Juan; Pan, Zhongbin; Wang, Xiao; Liu, Lei; Liu, Rui; Yang, Huawei; Lu, Wei
• Is Part Of: Carbon. Volume 142(2019)
• Page Start: 20
• Page End: 31
• Publication Date: 2019-02
• Subjects: Metal-organic frameworks -- Nanoporous Fe3O4@C -- Dielectric loss -- Magnetic loss -- Electromagnetic wave absorption; Carbon -- Periodicals; Carbone -- Périodiques; Koolstof; Toepassingen; Electronic journals; 546.681
• DOI: 10.1016/j.carbon.2018.10.014
• Languages: English
• ISSNs: 0008-6223

Abstract

Abstract: Electromagnetic wave absorbing materials have been widely applied in the wireless communication, electronic devices, and radar technology. In this work, metal-organic frameworks derived nanoporous Fe3 O4 @ carbon (Fe3 O4 @NPC) composites were successfully obtained by a simple method. Electromagnetic wave absorbing performances were significantly enhanced due to the optimal impedance matching and strong attenuation via the synergy between the dielectric loss and the magnetic loss. As a result, the Fe3 O4 @NPC composites exhibited excellent electromagnetic wave absorbing properties, in which a strong reflection loss ( RL ) of −65.5 dB at 9.8 GHz as well as a wide absorbing bandwidth of 4.5 GHz ( RL < −10 dB) with a matching thickness of 3.0 mm were achieved. Therefore, the present work can provide a new paradigm for the design and synthesis of electromagnetic wave absorbing materials possessing a promising application potential. Graphical abstract: MOFs derived nanoporous Fe3 O4 @C composites exhibited a promising application in electromagnetic wave absorption. Image 1