贺军哲,孙新,疏金成,杨轩,曹茂盛.纺锤状ZnO/还原氧化石墨烯异质结构及其微波吸收性能[J].表面技术,2020,49(2):88-94. HE Jun-zhe,SUN Xin,SHU Jin-cheng,YANG Xuan,CAO Mao-sheng.Microwave Absorption Performance of Spindle-Shaped ZnO/Reduced Graphene Oxide Heterostructure[J].Surface Technology,2020,49(2):88-94 |
纺锤状ZnO/还原氧化石墨烯异质结构及其微波吸收性能 |
Microwave Absorption Performance of Spindle-Shaped ZnO/Reduced Graphene Oxide Heterostructure |
投稿时间:2019-10-13 修订日期:2020-02-20 |
DOI:10.16490/j.cnki.issn.1001-3660.2020.02.011 |
中文关键词: 纺锤状ZnO棒 还原氧化石墨烯 异质结构 电磁特性 微波吸收 |
英文关键词:spindle-shaped ZnO rod reduced graphene oxide heterostructure electromagnetic characteristics microwave absorption performance |
基金项目:国家自然科学基金(11774027,11574261,11604237,51132002,51072024,51372282) |
|
Author | Institution |
HE Jun-zhe | 1.Beijing Institute of Environmental Characteristics, Beijing 100854, China |
SUN Xin | 1.Beijing Institute of Environmental Characteristics, Beijing 100854, China |
SHU Jin-cheng | 2.Beijing Institute of Technology, Beijing 100081, China |
YANG Xuan | 1.Beijing Institute of Environmental Characteristics, Beijing 100854, China |
CAO Mao-sheng | 2.Beijing Institute of Technology, Beijing 100081, China |
|
摘要点击次数: |
全文下载次数: |
中文摘要: |
目的 调节石墨烯的电磁匹配,以实现最优的微波吸收性能。方法 通过改进的Hummers法制备氧化石墨烯GO,以六水合硝酸锌、双六甲撑三胺、氧化石墨烯为原料,采用水热法在140 ℃获得了具有异质结构的包裹r-GO的纺锤状ZnO棒(S-ZnO/r-GO)。通过X射线衍射分析仪(XRD)、扫描电子显微镜(SEM)以及透射电子显微镜(TEM)测试,分别对S-ZnO/r-GO的组成成分、形貌特征以及微观结构进行了表征,同时采用同轴法,通过矢量网络分析仪测试分析了不同填充浓度下S-ZnO/r-GO复合材料在2~18 GHz范围内的电磁特性,并通过计算得到了材料的微波反射率损耗。结果 尺寸均匀且相互交织的纺锤状ZnO棒被大量褶皱的还原氧化石墨烯所包覆,构建了一种相互连接的三维交织结构。纺锤状ZnO的引入以及三维结构的建立,明显改善了S-ZnO/r-GO异质结构在2~18 GHz频率范围内的电磁特性和微波响应。在厚度为2.0 mm,频率为14.8 GHz处,最大反射率损耗值达到-40 dB,有效吸收带宽几乎覆盖整个Ku波段。结论 纺锤状ZnO/r-GO复合材料表现出优异的微波吸收性能和较宽的有效吸收频段,具有一定的应用前景。 |
英文摘要: |
This work aims to adjust the electromagnetic matching of graphene to achieve the best microwave absorption performance. Graphene oxide was prepared by improved Hummers method. The spindle-shaped ZnO rods wrapped by reduced graphene oxide (S-ZnO/r-GO) with heterostructure were synthesized by the hydrothermal method at 140 ℃ with Zinc nitrate hexahydrate, bis-hexamethylene triamine and graphene oxide as raw materials. The composition, morphology and microstructure of S-ZnO/r-GO were characterized by X-ray diffractometer (XRD), scanning electron microscope (SEM) and transmission electron microscopy (TEM). The electromagnetic properties of S-ZnO/r-GO composite with different mass ratios were tested by vector network analyzer in the frequency range of 2~18 GHz through coaxial method, and the microwave reflection loss of the composite was calculated. The interlaced spindle-shaped ZnO rods with uniform shapes were wrapped with plenty crumpled r-GO sheets, thus constructing an interconnected 3D structure. Both the introduction of spindle-shaped ZnO and the construction of 3D structure significantly improved the electromagnetic characteristics and microwave response of S-ZnO/r-GO heterostructure in the frequency range of 2~18 GHz. A maximum reflection loss value of -40 dB was achieved at a thickness of 2.0 mm and a frequency of 14.8 GHz. The effective absorption bandwidth almost covered the whole Ku band. The composites of S-ZnO/r-GO exhibit prominent microwave absorption performance and wide effective absorption bandwidth and have certain application prospects. |
查看全文 查看/发表评论 下载PDF阅读器 |
关闭 |