Facile synthesis of porous Fe₃O₄@C core/shell nanorod/graphene for improving microwave absorption properties

Abstract

Porous Fe3O4@C core/shell nanorods decorated with reduced graphene oxide were synthesized by a facile one-pot method, and exhibit high microwave absorption performance: maximum reflection loss reaches −48.6 dB.

Improvement of multiple attenuation characteristics of two-dimensional lamellar ferrocobalt@carbon nanocomposites as excellent electromagnetic wave absorbers

“…3(f), the crystal plane spacing of about 0.205 nm corresponds to the (1 1 1) crystal plane of cubic Co, and the existing graphitic carbon-shell is conducive to preventing the oxidation of magnetic metals. 25…”

Facile Fabrication of Composite Ag/Fe3O4 and Porous Fe3O4 Nanorods Based on Oblique Angle Codeposition

“…In addition, metal/Fe 3 O 4 composite NPs are particularly of interest because the metal surface can be easily functionalized with other small molecules, functional ligands, or biomolecules, − which could easily assemble multifunctional hybrid NSs for wide applications. In this regard, much attention has been focused on the development of efficient fabrication/synthesis approaches to produce shape-, size-, and composition-controlled Fe 3 O 4 NSs, especially porous and composite NSs. − Often composite Fe 3 O 4 NSs are mainly prepared via chemical synthesis processes, including coprecipitation, hydrothermal synthesis, thermal decomposition, sol–gel synthesis, sonochemical synthesis, microemulsion, electrochemical synthesis, electrospray synthesis, and bacterial and microorganism synthesis. , Complicated protocols and operations are required in these methods, while the shape, size, composition, etc., still cannot be precisely controlled due to the uncertainty in chemical reaction processes. Facile and versatile preparation methods of composite and porous Fe 3 O 4 NSs with desirable properties are in great demand.…”

Effect of Ball Milling on the Absorption Properties of Fe3O4

“…However, there are more only benefits but also problems like pollution. To reduce the impact of electromagnetic waves on the environment, research and development of absorption materials has become a popular research topic [1][2][3][4][5].…”