装有Fe/Co纳米颗粒的N,O-Doped核桃状多孔碳复合微球,用于可调节的电磁波吸收
Yuye Dou1, Xiangyi Zhang1, Xinbo Zhao1
1Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, Ocean University of China, Qingdao, 266100, China.
Small (Weinheim an der Bergstrasse, Germany)
|January 11, 2024
概括
研究人员为新型磁性碳复合物吸收器开发了绿色合成方法. 这些材料提供出色的电磁波 (EMW) 吸收,具有可调节的特性和宽带宽,即使填充剂含量低.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术 纳米技术
- 化学 化学 化学
背景情况:
- 开发有效的吸收电磁波 (EMW) 材料对于现代电子和国防至关重要.
- 现有的方法通常涉及有毒溶剂或复杂的程序,阻碍大规模的环保生产.
- 定制微结构和多组件调节是优化EMW吸收性能的关键.
研究的目的:
- 设计简单,环保的方法,以制备有效的EMW吸收材料.
- 为了合成N,O,添加了装有FeCo纳米粒子 (WPCM/Fe-Co) 的核桃状多孔碳复合材料微球.
- 通过组合调节来证明可调节的EMW吸收特性.
主要方法:
- 高温碳化与无肥乳液聚合和水热方法相结合.
- 用 FeCo 纳米粒子 (WPCM/Fe-Co) 装载的 N,O 化核桃状多孔碳复合材料微球的合成.
- 调整Fe和Co组件比例用于性能调整.
主要成果:
- WPCM/Fe-Co复合材料具有出色的EMW吸收性能.
- 最佳的复合材料在10.33GHz (3.0毫米厚度) 时实现了-48.34dB的最小反射损失 (RLmin).
- 在低填充率 (16.7%) 实现了覆盖C,X和Ku频段的有效吸收带宽 (EAB).
结论:
- 成功开发了一种用于磁性碳复合材料吸收器的新绿色合成方法.
- 类似核桃的形态和多组件调节使得超级阻抗匹配和EMW减弱成为可能.
- WPCM/Fe-Co复合材料在低负载下表现出高性能EMW吸收,适合实际应用.
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