Wang Xiao, Dong Gaolei, Pan Fei, Lin Cong, Yuan Bin, Yang Yang, Lu Wei
Shanghai Key Lab of D&A for Metal-Functional Materials, School of Materials Science and Engineering, Tongji University, Shanghai, 201804, People's Republic of China.
College of Materials Science and Engineering, Fuzhou University, Fuzhou, 350108, People's Republic of China.
Nanomicro Lett. 2025 Jun 23;17(1):309. doi: 10.1007/s40820-025-01819-9.
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 (TiCT) 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 (RL) 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.
电子局域化被认为是优化电磁波（EMW）耗散的一种有前景的方法。然而，对于当前的研究来说，实现良好控制的电子局域化并阐明相关的EMW损耗机制仍然很困难。在本研究中，探索了一种用镍纳米团簇（Ni-NC）修饰的新型二维MXene（TiCT）纳米片体系，以基于电子轨道结构构建有效的电子局域化模型。理论模拟和实验结果表明，Ni-NC与MXene之间的金属-载体相互作用破坏了对称的电子环境，导致电子局域化增强和偶极极化。此外，Ni-NC产生强界面电场，增强异质界面相互作用并促进界面极化。结果，优化后的材料实现了-54 dB的优异反射损耗（RL）和6.8 GHz的宽有效吸收带宽。本研究为深入了解电子局域化与EMW耗散之间的关系提供了关键见解，为半导体、自旋电子学和催化等功能材料中的电子局域化工程提供了一条途径。
