Hollow ZnO/Fe₃O₄@C Nanofibers for Efficient Electromagnetic Wave Absorption

Baoding Li; Zhihui Zeng; Jing Qiao; Yunfei Yang; Dongmei Xu; Haoyuan Tian; Wei Liu; Jiurong Liu

doi:10.1021/acsanm.2c02616

journal article·2022-08-26

Hollow ZnO/Fe₃O₄@C Nanofibers for Efficient Electromagnetic Wave Absorption

Baoding Li, Zhihui Zeng, Jing Qiao, Yunfei Yang, Dongmei Xu, Haoyuan Tian, Wei Liu, Jiurong Liu

ACS Applied Nano Materials· Volume 5· Issue 8

Publisher page

Source abstract

Abstract

A type of hollow core–shell ZnO/Fe3O4@C fibers were fabricated by a facile combination of electrospinning, calcination, and pyrolytic pyrrole-derived carbon coating. The combination of ZnO/Fe3O4 fibers and carbon nanolayer improved the dielectric loss capability of the nanocomposites and obtained good impedance matching, leading to excellent electromagnetic wave (EMW) absorption performance. The minimum reflection loss of the ZnO/Fe3O4@C nanocomposites reached −74.2 dB at a thickness of merely 2.2 mm, and the effective absorption bandwidth reached 5.5 GHz at a matching thickness of 2.1 mm. Compared with the ZnO- or Fe3O4-based composites ever reported, our ZnO/Fe3O4@C nanocomposites exhibited superior EMW absorption characteristics due to the efficient design of multiple synergistical components and hollow fibrous structures. Combined with the facile, scalable preparation approach, the hollow core–shell ZnO/Fe3O4@C nanocomposite fibers with high EMW absorption performance show great potential for EMW absorption applications.

Source: openalex_inverted_index · Quality: baseline

Research context

Nanomaterials Composites

OpenAlex topics: Electromagnetic wave absorption materials · Advanced Antenna and Metasurface Technologies · Metamaterials and Metasurfaces Applications

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory for Liquid−Solid Structural Evolution and Processing of Materials, School of Materials Science and Engineering, Shandong University, Jinan 250061, Shandong, China

College of Chemistry and Chemical Engineering, Dezhou University, Dezhou 253023, China

State Key Laboratory of Crystal Materials, Institute of Crystal Materials, Shandong University, Jinan 250100, Shandong, China

Funding

Ministry of Science and Technology of the People's Republic of China · Shenzhen Municipal Science and Technology Innovation Council · Shandong University · Natural Science Foundation of Shandong Province · New 20 Funded Programs for Universities of Jinan · Provincial Key Research and Development Program of Shandong · Joint Laboratory project of Electromagnetic Structure Technology

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