金属-支撑相互作用诱导电子定位在合理设计的金属位点锚定MXene增强电磁波衰减。

IF 36.3 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2025-06-23 DOI:10.1007/s40820-025-01819-9

Xiao Wang,Gaolei Dong,Fei Pan,Cong Lin,Bin Yuan,Yang Yang,Wei Lu

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引用次数: 0

摘要

电子局域化被认为是一种很有前途的优化电磁波耗散的方法。然而，目前的研究仍然难以实现可控的电子定位和阐明相关的EMW损耗机制。在本研究中，探索了一种新型的二维Ni纳米簇修饰MXene （Ti3C2Tx）纳米片（Ni- nc）系统，以构建一个有效的基于电子轨道结构的电子定位模型。理论模拟和实验结果表明，Ni-NC和MXene之间的金属支撑相互作用破坏了对称电子环境，导致电子局域化和偶极极化增强。此外，Ni-NC产生强大的界面电场，加强异质界面相互作用，促进界面极化。因此，优化后的材料实现了- 54 dB的卓越反射损耗（RLmin）和6.8 GHz的宽有效吸收带宽。这项研究为电子局域化和EMW耗散之间的深入关系提供了重要的见解，为半导体、自旋电子学和催化等功能材料的电子局域化工程提供了途径。

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Metal-Support Interaction Induced Electron Localization in Rationally Designed Metal Sites Anchored MXene Enables Boosted Electromagnetic Wave Attenuation.

The electron localization is considered as a promising approach to optimize electromagnetic waves (EMW) dissipation. However, it is still difficult to realize well-controlled electron localization and elucidate the related EMW loss mechanisms for current researches. In this study, a novel two-dimensional MXene (Ti3C2Tx) nanosheet decorated with Ni nanoclusters (Ni-NC) system to construct an effective electron localization model based on electronic orbital structure is explored. Theoretical simulations and experimental results reveal that the metal-support interaction between Ni-NC and MXene disrupts symmetric electronic environments, leading to enhanced electron localization and dipole polarization. Additionally, Ni-NC generate a strong interfacial electric field, strengthening heterointerface interactions and promoting interfacial polarization. As a result, the optimized material achieves an exceptional reflection loss (RLmin) of - 54 dB and a broad effective absorption bandwidth of 6.8 GHz. This study offers critical insights into the in-depth relationship between electron localization and EMW dissipation, providing a pathway for electron localization engineering in functional materials such as semiconductors, spintronics, and catalysis.

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来源期刊

Nano-Micro Letters NANOSCIENCE & NANOTECHNOLOGY-MATERIALS SCIENCE, MULTIDISCIPLINARY

CiteScore

32.60

自引率

4.90%

发文量

981

审稿时长

1.1 months

期刊介绍： Nano-Micro Letters is a peer-reviewed, international, interdisciplinary, and open-access journal published under the SpringerOpen brand. Nano-Micro Letters focuses on the science, experiments, engineering, technologies, and applications of nano- or microscale structures and systems in various fields such as physics, chemistry, biology, material science, and pharmacy.It also explores the expanding interfaces between these fields. Nano-Micro Letters particularly emphasizes the bottom-up approach in the length scale from nano to micro. This approach is crucial for achieving industrial applications in nanotechnology, as it involves the assembly, modification, and control of nanostructures on a microscale.