文献类型：期刊文献

英文题名：Interconnected magnetic carbon@NixCo(1-x)Fe(2)O(4) nanospheres with core-shell structure: An efficient and thin electromagnetic wave absorber

作者：Chen, Xingliang[1];Wang, Yan[2];Liu, Hailing[1];Jin, Shu[1];Wu, Guanglei[3]

机构：[1]Shaoxing Univ, Key Lab Clean Dyeing & Finishing Technol Zhejiang, Shaoxing 312000, Peoples R China;[2]Xian Technol Univ, Sch Mat & Chem Engn, Xian 710021, Peoples R China;[3]Qingdao Univ, Coll Mat Sci & Engn, Inst Mat Energy & Environm, State Key Lab Biofibers & Ecotext, Qingdao 266071, Peoples R China

年份：2022

卷号：606

起止页码：526

外文期刊名：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录：SCI-EXPANDED(收录号：WOS:000703525600006)、、WOS

基金：The work was financially supported by Scientific Research Fund of Shaoxing university, National Natural Science Foundation of China (No. 51407134) , Natural Science Foundation of Shandong Province (No. ZR2019YQ24) , Shandong Taishan Scholars Young Expert Program (No. tsqn202103057) and the Qingchuang Talents Induction Program of Shandong Higher Education Institution (Research and Innovation Team of Structural-Functional Polymer Composites) .

语种：英文

外文关键词：Ferrite; Interconnected structure; Core-shell nanosphere; Magnetic behavior; EM wave absorption performance

外文摘要：The applications of cobalt ferrite and nickel ferrite composite materials on electromagnetic (EM) wave absorption are the research hotspot currently. However, the systematical comparison study between these two ferrites composites have rarely been carried out. Thus, the EM wave absorption performance of interconnected carbon@NixCo1-xFe2O4 composites with core-shell structures were investigated comprehensively in this work. A series of magnetic nanospheres including NiFe2O4, cobalt-doped nickel ferrite, nickel-cobalt ferrite, nickel-doped cobalt ferrite and CoFe2O4 were synthesized firstly, and then uniformly encapsulation by carbon rendered the corresponding C@NixCo1-xFe2O4 composites nano spheres. Synthesis reactions involved for C@NixCo1-xFe2O4 formation were investigated in detail, and afterwards their magnetic behavior, EM wave absorption performance and absorbing mechanism were thoroughly explored and analyzed. Results show that when nickel is dominant element and cobalt is doping element (Ni0.75Co0.25Fe2O4), the composite nanosphere exhibits optimum EM wave absorption performance. When the sample thickness is just 1.9 mm, its RLmin value can reach-51 dB, and the corresponding EAB width is 3.3 GHz. The synthesized C@Ni0.75Co0.25Fe2O4 can be qualified as an efficient and thin electromagnetic wave absorber, which is mainly attributed to its special structure, fair electromagnetic matching and impedance matching. (C) 2021 Elsevier Inc. All rights reserved.