文献类型：期刊文献

英文题名：The Combined Sol-Gel and Ascorbic Acid Reduction Strategy Enabling Ba2Co2Fe12O22 Hexaferrite/Graphene Composite with Enhanced Microwave Absorption Ability

作者：He, Yu[1]; Wang, Ruoqi[1]; Wu, Xiaohan[1]; Tang, Chuanhao[1]; Qian, Jun[1]; Zuo, Peiyuan[1]; Zhuang, Qixin[1]; Liu, Xing[2]

机构：[1] Key Laboratory of Special Functional Polymeric Materials and Related Technology, Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, China

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230437419)

语种：英文

外文关键词：Ascorbic acid - Barium compounds - Cobalt compounds - Ferrite - Graphene - Reducing agents - Sol-gels

摘要：Graphene featuring low density and high specific surface area, is highly suitable for loading ferrite nanoparticles. However, the current efficient reducing graphene method in fabricating ferrite/graphene composites require high temperatures/pressures, ae well as highly toxic and explosive reducing agents. We herein propose a strategy for synthesizing Ba2Co2Fe12O22 hexaferrite/graphene composite MAMs by mildly reducing graphene oxide using ascorbic acid. This method enables the reduced graphene oxide with comparable C/O ratios and conductivity comparing to that achieved by other reduction methods. The proper mass ratio of graphene oxide to ferrite particles (1:2) and optimized electromagnetic parameters endow the microwave absorbing materials with a minimum reflection loss value of approximately -45.25 dB and an effective bandwidth of around 4.75 GHz. The simulation calculations are further investigated to verify the practical application of this absorber. Accordingly, it is reasonable to conclude this study provides a new synthetic approach on advanced ferrite/graphene composite based MAMs. ? 2023, The Authors. All rights reserved.