Construction of 0D/2D heterojunction in 3D MXene/GQDs hybrid aerogels for enhanced broad electromagnetic wave absorption

被引：1
作者：
Zhou, Xuejiao [1 ,2 ]
Li, Sichen [1 ]
Xi, He [1 ,2 ]
Zhong, Peng [1 ]
Sun, Jing [1 ,2 ]
Wang, Zhenni [1 ]
Liu, Jiaolong [3 ]
Wu, Hongjing [4 ]
机构：
[1] Xidian Univ, Sch Adv Mat & Nanotechnol, Xian 710071, Peoples R China
[2] Xidian Univ, Natl Engn Res Ctr Wide Bandgap Semicond, Xian 710126, Peoples R China
[3] Xidian Univ, Sch Phys, Xian 710071, Peoples R China
[4] Northwestern Polytech Univ, MOE, Key Lab Mat Phys & Chem Extraordinary, Xian 710072, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2025年 / 1016卷
基金：
中国国家自然科学基金;
关键词：
MXene; Graphene quantum dots; 0D/2D heterojunction; Electromagnetic response; GRAPHENE; ARCHITECTURE; COMPOSITE;
D O I：
10.1016/j.jallcom.2025.179021
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Significant efforts have been made towards designing and fabricating MXene/carbon hybrid aerogels for electromagnetic wave (EMW) absorption applications. Carbon nano-species, such as 2D graphene and 1D carbon nanotubes (CNTs), have been widely incorporated into MXene/carbon aerogels. However, they often exhibit poor impedance matching due to their high conductivity, thus limiting further improvements in EMW absorption performance. Unlike 2D graphene and 1D CNTs/nanofibers, graphene quantum dots (GQDs) exhibit intriguing chemical and physical properties, as well as a zero-band electronic structure. To the best of our knowledge, the EMW response behavior of 0D/2D MXene/GQDs heterojunction in 3D aerogels has not yet been explored. Herein, we develop a unique approach for the controlled synthesis of 3D MXene/GQDs composite aerogels featuring with abundant 0D/2D heterojunctions. It was found that GQDs have a significant effect on the microstructure of MXene/GQDs aerogels. As the amount of GQD increases, more developed porous structures in aerogels are formed. The introduction of GQDs leads to the formation of numerous 0D/2D heterointerfaces and plays a key role in modulating the electromagnetic (EM) parameters and optimizing the impedance matching of 3D MXene/GQDs aerogels, thereby enhancing their absorption capabilities. The obtained MXene/GQDs aerogels exhibit a remarkable EMW response behavior, with a strong minimum reflection loss (RLmin) of -53.21 dB and a broad effective absorption bandwidth (EAB) of 7.90 GHz at 2.5 mm. The multiple dissipation modes and optimized impedance matching significantly contribute to the enhanced EMW absorption capabilities. This investigation offers a new boulevard for developing advanced 3D MXene-based hybrid aerogels beyond EM response.
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页数：10
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共 63 条
  • [11] Maleki H., Recent advances in aerogels for environmental remediation applications: A review, Chem. Eng. J., 300, pp. 98-118, (2016)
  • [12] Lee J.H., Park S.J., Recent advances in preparations and applications of carbon aerogels: a review, Carbon, 163, pp. 1-18, (2020)
  • [13] Wei C.X., Zhang Q.G., Wang Z., Yang W.J., Lu H.D., Huang Z.H., Yang W., Zhu J.X., Recent advances in MXene-based aerogels: fabrication, performance and application, Adv. Funct. Mater., 33, 9, (2022)
  • [14] Chen Z.C., Fu X.M., Liu R., Song Y.H., Yin X.Z., Fabrication, performance, and potential applications of MXene composite aerogels, Nanomaterials, 13, 14, (2023)
  • [15] Song Q., Ye F., Kong L., Shen Q.L., Han L.Y., Feng L., Yu G.J., Pan Y.A., Li H.J., Graphene and MXene nanomaterials: toward high-performance electromagnetic wave absorption in gigahertz band range, Adv. Funct. Mater., 30, 31, (2020)
  • [16] Liu T.T., Zheng Q., Cao W.Q., Wang Y.Z., Zhang M., Zhao Q.L., Cao M.S., In situ atomic reconstruction engineering modulating graphene-like MXene-based multifunctional electromagnetic devices covering multi-spectrum, Nanomicro Lett., 16, 1, pp. 173-188, (2024)
  • [17] Li X.L., Yin X.W., Song C.Q., Han M.K., Xu H.L., Duan W.Y., Cheng L.F., Zhang L.T., Self-assembly core–shell graphene-bridged hollow MXenes spheres 3D foam with ultrahigh specific EM absorption performance, Adv. Funct. Mater., 28, 41, (2018)
  • [18] Cui Y.H., Yang K., Zhang F.R., Lyu Y.T., Zhang Q.Y., Zhang B.L., Ultra-light MXene/CNTs/PI aerogel with neat arrangement for electromagnetic wave absorption and photothermal conversion, Compos. Part A Appl. Sci. Manuf., 158, (2022)
  • [19] Sun C.H., Lan D., Jia Z.R., Gao Z.G., Wu G.L., Kirkendall effect-induced ternary heterointerfaces engineering for high polarization loss MOF-LDH-MXene absorbers, Small, 20, 48, (2024)
  • [20] Han M.J., Lan D., Zhang Z.M., Zhao Y.Z., Zou J.X., Gao Z.G., Wu G.L., Jia Z.R., Micro-sized hexapod-like CuS/Cu<sub>9</sub>S<sub>5</sub> hybrid with broadband electromagnetic wave absorption, J. Mater. Sci. Technol., 214, pp. 302-312, (2025)
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