合成N/O原子联合合的生物炭与3D多孔结构,以有效吸收电磁波
Zheng Yang1, Mengjie Zhang1, Shipeng Wang1
1Engineering Research Center of Biomass Conversion and Pollution Prevention of Anhui Educational Institutions, Biomass Oligosaccharides Engineering Technology Research Center of Anhui Province, School of Chemistry and Materials Engineering, Anhui Provincial Key Laboratory of Green Carbon Chemistry, Fuyang Normal University, Fuyang, 236037, PR China.
Chemistry, an Asian journal
|September 12, 2024
概括
研究人员开发了环保的皮塔亚皮生物炭,用于吸收电磁波 (EMW). 这种多孔,异原子合材料可达到99%以上的EMW吸收,为微波屏蔽应用提供可持续的解决方案.
科学领域:
- 材料科学 材料科学 材料科学
- 纳米技术纳米技术
- 环境科学 环境科学
背景情况:
- 开发用于电磁波 (EMW) 吸收的先进材料对于屏蔽应用至关重要.
- 来自生物质的生物炭为材料开发提供了一个可持续且具有成本效益的平台.
- 量身定制生物炭的特定表面积 (SSA),多孔性和异原子兴奋剂可以提高其EMW吸收能力.
研究的目的:
- 从皮塔皮中合成一种新型的生物炭,具有增强的特定表面积 (SSA) 和异质原子兴奋剂,以获得优异的电磁波 (EMW) 吸收.
- 研究合成生物炭的微观结构,N/O辅助兴奋剂和EMW吸收性能之间的相关性.
- 评估皮塔皮衍生生物炭作为低成本和环保的微波吸收器的潜力.
主要方法:
- 用乙醇和氧化物 (KOH) 处理皮塔亚树皮,以产生生物质碳.
- 合成的生物炭的特点是其特定的表面积 (SSA),多孔性和元素组成 (N / O 兴奋剂).
- 测量了电磁波 (EMW) 吸收特性,包括反射损失和有效吸收带宽 (EAB).
主要成果:
- 合成的生物炭具有1580m2/g的高SSA,显著的N/O原子共,以及多孔结构.
- 生物炭实现了超过99%的EMW吸收,最大反射损失在7.54 GHz时约为-45.25 dB.
- 记录了大约4.87GHz的有效吸收带宽 (EAB),表明了宽频吸收.
结论:
- 皮塔皮衍生生物炭由于其独特的微观结构和N/O共,具有出色的微波吸收特性,导致有效的表面缺陷和极化机制.
- 该研究提供了一种新的,具有成本效益和环保的方法,用于从生物质废物制造高性能微波吸收器.
- 这项研究为设计用于电磁干扰 (EMI) 屏蔽和其他微波吸收应用的先进生物炭材料提供了宝贵的参考.
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