Magnetic reduced graphene oxide nanocomposite as an effective electromagnetic wave absorber and its absorbing mechanism

详细信息    查看全文

• 作者：Ying Huang^a ; ^{yingh@nwpu.edu.cn" class="auth_mail" title="E-mail the corresponding author} ; Xiao Ding^a ; Suping Li^a ; Na Zhang^a ; Jianguo Wang^b
• 关键词：A. Powders ; chemical preparation ; D. Ferrites ; E. Functional applications ; Nanoparticle ; Electromagnetic wave absorbing mechanism
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：15 November 2016
• 年：2016
• 卷：42
• 期：15
• 页码：17116-17122
• 全文大小：2414 K

文摘

A magnetic reduced graphene oxide (MRGO) composite consisting of graphene oxide and Fe₃O₄ particles in the range of 5–20 nm has been prepared by the one-pot hydrothermal process. RGO nanosheets provide flexible substrates for nanoparticle decoration, while Fe₃O₄ nanoparticles can also effectively prevent nanosheets to restack each other. Compared with previously literature, the synthesized RGO-Fe₃O₄ composite exhibits excellent electromagnetic wave absorption. The minimum reflection loss (R_L) value of −49.05 dB has been observed at 14.16 GHz with a thickness of 2.08 mm. The absorption bandwidth (R_L<−10 dB) corresponding to the minimum R_L is 4.60 GHz. The electromagnetic wave absorption properties of the RGO-Fe₃O₄ composite have been interpreted through the quarter-wavelength matching model.