Significant promotion of porous architecture and magnetic Fe₃O₄ NPs inside honeycomb-like carbonaceous composites for enhanced microwave absorption.

ABSTRACT: Carbonaceous composites with tailored porous architectures and magnetic Fe₃O₄ components derived from walnut shells were fabricated by a solvothermal method and used as effective microwave absorbers. The porous composites were obtained by two carbonization processes at different temperatures and an etching process using potassium hydroxide. The introduction of a developed porous architecture inside the resulting materials distinctly improved the microwave absorption performance. Moreover, investigations revealed that the Fe₃O₄ nanoparticles were chemically bonded and uniformly decorated on the porous framework without aggregation. Owing to the combined advantages of the lightweight conductive biochar-like porous framework with a favorable dielect

SUBMITTER: Gao S 

PROVIDER: S-EPMC9080601 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature