CoNi@TiO_2核壳结构的合成制备及吸波性能的研究
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- 英文论文题名：Synthesis and Electromagnetic wave absorption of CoNi@TiO_2 core@shell structure
- 论文作者：蒋巧荣 ; 江智渊 ; 谢兆雄
- 英文论文作者：Qiaorong Jiang ; Zhiyuan Jiang ; Zhaoxiong Xie ; State Key Laboratory of Physical Chemistry of Solid Surfaces and Department of Chemistry ; College of Chemistry and Chemical Engineering ; Xiamen University
- 年：2016
- 作者机构：厦门大学化学化工学院固体表面物理化学国家重点实验室;
- 论文关键词：吸波材料 ; CoNi合金 ; 核壳结构
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十六分会：纳米材料合成与组装
- 语种：中文
- 分类号：TB34
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十六分会 ; 纳米材料合成与组装
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：261k
- 原文格式：D
- 会议级别：全国
摘要
电磁波吸收材料的制备具有重要的理论意义和实际应用价值。理想的吸波材料要同时具备磁损耗与介电损耗并满足阻抗匹配条件,本文利用溶剂热的方法成功制备了磁性CoNi为核、介电TiO_2为壳的核壳结构,测试结果表明该结构具有一定的电磁波吸收性能(在5.5mm处的反射损耗RL=-25dB)。可能的原因如下,首先,由于内核和壳层其自身就具有特有的吸波频段和吸波强度.并且当两种不同的材料构成核壳结构以后,在电磁场的作用下,电子在界面之间的极化、磁的共振等一系列的因素会增强核壳结构材料的相关性能。
Synthesis of Electromagnetic wave(EM-wave) absorption material is significant theoritically and applicatively. An ideal EM-wave absorption material should meet impendence matching including dielectric loss and magnetic loss. In this paper, we have successfully synthesized magnetic Co Ni core and dielectric TiO_2 shell structure via solvothermal method, and this material presents efficient EM-wave absorption at some degree(refiction loss(RL)=-25 d B at the thickness of 5.5 mm). The reasons are as follows. Firstly, for the nature of core and shell materials, they can absorb EM-wave efficiently at certain frequencies, respectively. Secondly, Electronic polarization in the interface of core and shell, as well as magnetic resonance, happens in the present of external electromagentic field, promoting efficient EM-wave absorption.
Synthesis of Electromagnetic wave(EM-wave) absorption material is significant theoritically and applicatively. An ideal EM-wave absorption material should meet impendence matching including dielectric loss and magnetic loss. In this paper, we have successfully synthesized magnetic Co Ni core and dielectric TiO_2 shell structure via solvothermal method, and this material presents efficient EM-wave absorption at some degree(refiction loss(RL)=-25 d B at the thickness of 5.5 mm). The reasons are as follows. Firstly, for the nature of core and shell materials, they can absorb EM-wave efficiently at certain frequencies, respectively. Secondly, Electronic polarization in the interface of core and shell, as well as magnetic resonance, happens in the present of external electromagentic field, promoting efficient EM-wave absorption.
引文
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