Ultrasmall SnFe2O4 nanoparticles anchored on N-doped carbon nanofibers for ultralight and high-performance microwave absorption

Guangguang Guan; Xiaoqiang Li; Yao Li; Siyi Tong; Jun Xiang; Kaiyin Zhang

doi:10.1039/d3cp02657d

Ultrasmall SnFe₂O₄ nanoparticles anchored on N-doped carbon nanofibers for ultralight and high-performance microwave absorption

Phys Chem Chem Phys. 2023 Nov 22;25(45):30832-30837. doi: 10.1039/d3cp02657d.

Authors

Guangguang Guan^{1

2

3}, Xiaoqiang Li⁴, Yao Li¹, Siyi Tong¹, Jun Xiang¹, Kaiyin Zhang⁵

Affiliations

¹ School of Science, Jiangsu University of Science and Technology, Zhenjiang 212100, China. jxiang@just.edu.cn.
² School of Materials Science and Engineering, University of Science and Technology of China, Hefei 230026, China.
³ Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China.
⁴ Institute of Materials Science and Engineering, Beijing University of Technology, Beijing 100124, China.
⁵ College of Mechanical and Electrical Engineering, Wuyi University, Wuyishan 354300, China. zhangkaiyin@wuyiu.edu.cn.

PMID: 37962012
DOI: 10.1039/d3cp02657d

Abstract

One-dimensional (1D) N-doped carbon nanofibers decorated with ultrafine (∼4.5 nm) SnFe₂O₄ nanoparticles (denoted as SFO/N-CNFs) are successfully synthesized by a combination of electrospinning and solvothermal process, and their microwave absorption (MA) properties are reported for the first time. With only 5 wt% filler loading in a silicone rubber matrix, the optimum reflection loss (RL) could reach -46.5 dB and the qualified frequency bandwidth (RL < -10 dB) can be capable of 4.8 GHz at 1.6 mm, exhibiting better comprehensive absorption performance relative to other analogous absorbers. The lightweight and highly efficient MA of SFO/N-CNFs is largely ascribed to the improved impedance matching and satisfactory attenuation ability caused by the synergistic effect between the ultrasmall-sized SFO nanoparticles (NPs) and 1D N-CNF matrix. This work not only offers a novel and promising high-performance microwave absorber, but also offers a general approach to designing and fabricating ultrasmall transition metal oxide nanoparticle decorated carbon-based composite nanostructures for multifunctional applications.