Fe2O3@CoFe2O4/MXene复合材料的制备及其电磁吸波性能

刘雨; 包云凤; 岳志豪; 贾志卿; 郭思瑶

Fe₂O₃@CoFe₂O₄/MXene复合材料的制备及其电磁吸波性能

青岛理工大学土木工程学院, 青岛 266033

基金项目: 国家自然科学基金(51978354)

详细信息

通讯作者:
郭思瑶，博士，教授，博士生导师，研究方向为新型纳米材料在土木工程的多元化应用　E-mail: guosy@qut.edu.cn

中图分类号: TB333
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- 文章访问数: 44
- HTML全文浏览量: 25
- 被引次数: 0
出版历程
- 收稿日期: 2024-07-31
- 修回日期: 2024-09-03
- 录用日期: 2024-09-03
- 网络出版日期: 2024-09-12

Preparation and electromagnetic wave absorption properties of Fe₂O₃@CoFe₂O₄/MXene composites

School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China

Funds: National Natural Science Foundation of China (No. 51978354)

摘要

摘要: 近年来，在低频波段实现电磁吸波剂的高效微波吸收性能仍然存在很大挑战。本文通过将金属氧化物Fe₂O₃@CoFe₂O₄均匀分散于Ti₃C₂T_x MXene纳米片上，调控MXene含量构建导电网络的同时优化了复合电磁吸波剂的阻抗匹配，有效增强了微波吸收性能。结果表明，本研究制备的Fe₂O₃@CoFe₂O₄/MXene-3 (FCFM-3)在频率为3.60 GHz处的最小反射损耗(Reflection loss, RL)高达−72.26 dB，同时在1.272 mm的超薄厚度下，最小RL值高达−71.66 dB，实现了在低频段的高性能电磁波吸收，为吸波剂在民用领域开拓了广阔的应用前景。
- Fe₂O₃@CoFe₂O₄ /
- MXene /
- 电磁吸波 /
- 反射损耗 /
- 阻抗匹配
Abstract: In recent years, it is still a great challenge to realize the high efficiency microwave absorption performance of electromagnetic wave absorbers in the low-frequency band. In this work, the metal oxide Fe₂O₃@CoFe₂O₄ is evenly distributed on Ti₃C₂T_x MXene nanosheets, and the impedance matching for the absorbers is optimized by regulating the content of MXene to construct a conductive network. The results show that the minimum reflection loss (RL_min) of Fe₂O₃@CoFe₂O₄/MXene-3 (FCFM-3) prepared in this study is up to −72.26 dB at the frequency of 3.60 GHz, and simultaneously achieves a RL_min value of −71.66 dB at an ultra-thin thickness of 1.272 mm, which realizes the high-performance electromagnetic wave absorption (EMA) in the low-frequency range, thereby opening up a broad application prospect for absorbers in the civil field.
- Fe₂O₃@CoFe₂O₄ /
- MXene /
- electromagnetic wave absorption /
- reflection loss /
- impedance matching

HTML全文

图 1 Fe₂O₃@CoFe₂O₄ (FCF)和Fe₂O₃@CoFe₂O₄ /MXene (FCFM)复合材料的XRD图谱

Figure 1. XRD patterns of Fe₂O₃@CoFe₂O₄ (FCF) and Fe₂O₃@CoFe₂O₄/MXene (FCFM) composites

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图 2 MXene、FCF和FCFM的Raman图谱

Figure 2. Raman spectra of MXene, FCF and FCFM

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图 3 FCFM-3的XPS光谱(a) 全谱；(b) C 1s；(c) O 1s；(d) Ti 2p；(e) Fe 2p；(f) Co 2p

Figure 3. (a) XPS survey of FCFM-3 sample; XPS spectra of (b) C 1s; (c) O 1s; (d) Ti 2p; (e) Fe 2p; (f) Co 2p.

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图 4 FCF和FCFM复合材料的SEM图像；(a) FCF；(b) FCFM-1；(c) FCFM-2；(d) FCFM-3；(e-h) FCFM-3的TEM和HRTEM图像

Figure 4. SEM images of FCF and FCFM composites; (a) FCF; (b) FCFM-1; (c) FCFM-2; (d) FCFM-3; (e-h) TEM and HRTEM images of FCFM-3

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图 5 FCF和FCFM复合材料的介电常数实部$ {\varepsilon }' $ (a)、介电常数虚部$ {\varepsilon }'' $ (b)、介电损耗正切$ \text{tan}{\delta }_{\varepsilon } $ (c)、磁导率实部$ {\mu }' $ (d)、磁导率虚部$ {\mu }'' $ (e)、磁损耗正切$ \text{tan}{\delta }_{\mu } $ (f)

Figure 5. Real part of permittivity $ {\varepsilon }' $ (a), imaginary part of permittivity $ {\varepsilon }'' $ (b), tangent of dielectric loss $ \text{tan}{\delta }_{\varepsilon } $ (c), real part of permeability $ {\mu }' $ (d), imaginary part of permeability $ {\mu }'' $ (e), tangent of magnetic loss $ \text{tan}{\delta }_{\mu } $ (f) of FCF and FCFM composites.

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图 6 (a) FCF；(b) FCFM-1；(c) FCFM-2和(d) FCFM-3的Cole-Cole半圆；FCF和FCFM复合材料的(e) 衰减常数和(f) 涡流系数

Figure 6. Cole-Cole curves of (a) FCF; (b) FCFM-1; (c) FCFM-2 and (d) FCFM-3; (e) attenuation constant and (f) eddy current loss of FCF and FCFM composites.

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图 7 FCFM-1和FCFM-3的三维RL值(a)、(d)；(b)、(e) FCFM-1反射损耗与频率关系图及阻抗匹配图；(c)、(f) FCFM-3反射损耗与频率关系图及阻抗匹配Z图

Figure 7. 3 D RL values of FCFM-1 and FCFM-3 (a) and (d); (b), (e) FCFM-1 reflection loss and frequency relationship and impedance matching; (c), (f) FCFM-3 reflection loss and frequency relationship and impedance matching Z.

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图 8 Fe₂O₃@CoFe₂O₄/MXene复合微波吸收机制示意图

Figure 8. Schematic of microwave absorption mechanism of Fe₂O₃@CoFe₂O₄/MXene composites.

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