Synergistic sp-C/sp-N Anchoring of Metal Single Atoms on Graphdiyne for Enhanced Microwave Absorption

IF 36.3 1区材料科学 Q1 Engineering

Nano-Micro Letters Pub Date : 2026-04-28 DOI:10.1007/s40820-026-02187-8

Yihao Fan, Haichuan Cheng, Pengyu Deng, Jianfeng Wu, Baoliang Zhang

引用次数: 0

Abstract

Highlights

The metal single-atom doping strategy was systematically applied to graphdiyne (GDY), an emerging two-dimensional carbon material, and a series of M-N-GDY single-atom microwave absorbers were successfully fabricated for the first time.
Combining X-ray absorption fine structure and density functional theory calculations, the influence of the central atom coordination structure (FeN₂C₂, FeC₄) on the overall electronic properties was elucidated.
The optimal sample Fe-N-GDY achieved an effective absorption bandwidth of 5.98 GHz at a matched thickness of 2.0 mm, with a minimum reflection loss of -51.2 dB.

查看原文本刊更多论文

金属单原子在石墨炔上的sp-C/sp-N协同锚定增强微波吸收

提高二维碳材料石墨炔（GDY）的导电性和极化性能是扩大其在微波吸收领域应用的关键一步。提出了一种通过精确调控单原子结构来提高GDY微波吸收性能的新策略。以三维球形GDY为底物，成功构建了两个Fe单原子吸收体：一个是Fe- n -GDY （FeN2C2）通过sp-N/sp-C协同配位锚定，另一个是Fe-GDY （FeC4）通过sp-C单独配位锚定。实验表征和理论计算相结合表明，FeN2C2结构诱导了更强的电荷转移和偶极极化。这种效应协同优化了材料的介电损耗和阻抗匹配。因此，在匹配厚度为2.0 mm时，最佳样品Fe-N-GDY的有效吸收带宽为5.98 GHz，反射损耗最小为-51.2 dB。该策略进一步扩展到多种三维过渡金属（Cr, Mn, Co, Ni， Cu和Zn）。结果表明，第八族元素（Fe, Co, Ni）在实际材料中表现出优异的性能，因为它们的电子结构有利于平衡极化和传导损失。雷达横截面模拟证实了该系列吸收器在实际场景中的卓越衰减能力。这项工作不仅开辟了GDY在微波吸收中的新应用，而且通过揭示“单原子结构-性质”相关关系，为合理设计原子精密电磁功能材料奠定了理论基础。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

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.