• 文献标题:   Covalent Bonding of MXene/Reduced Graphene Oxide Composites for Efficient Electromagnetic Wave Absorption
  • 文献类型:   Article, Early Access
  • 作  者:   YANG FX, HUANG Y, HAN XP, ZHANG S, YU M, ZHANG JP, SUN X
  • 作者关键词:   electromagnetic wave absorption, covalent bond, mxene, reduced graphene oxide, impedance matching
  • 出版物名称:   ACS APPLIED NANO MATERIALS
  • ISSN:  
  • 通讯作者地址:  
  • 被引频次:   0
  • DOI:   10.1021/acsanm.2c05150 EA FEB 2023
  • 出版年:   2023

▎ 摘  要

Due to their high conductivity and unique surface chemical characteristics, MXene and reduced graphene oxide (rGO) have received a great deal of attention in the field of electromagnetic wave absorption (EMA). This study describes the covalent modification of rGO with amino-functionalized MXene to create an electromagnetic absorbent material called MXene-rGO composite. After amidation, an amide bond successfully assembles MXene and rGO. The absorber performs admirably when the mass ratio of MXene to rGO is 1:2 (sample MG-3). With a thickness of 2.7 mm, the best reflection loss (R-L) is -47.98 dB at 6.4 GHz. Additionally, the best effective absorption bandwidth (EAB) (R-L < -10 dB) is 4.08 GHz (11.84-15.92 GHz) with a 1.4 mm matching thickness. The performance of the EMA can be obtained by adjusting the dielectric parameters and the migration rate of the electrons using the covalent bond as a stable carrier channel. The high dielectric loss, superior impedance matching, and strong attenuation ability contribute to the great absorption performance.