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个人信息Personal Information
教授 博士生导师
招生学科专业：
化学 -- 【招收硕士研究生】 -- 材料科学与技术学院
材料科学与工程 -- 【招收博士、硕士研究生】 -- 材料科学与技术学院
机械 -- 【招收博士、硕士研究生】 -- 材料科学与技术学院
材料与化工 -- 【招收博士、硕士研究生】 -- 材料科学与技术学院
主要任职：面向苛刻环境的材料制备与防护技术工业和信息化部重点实验室主任
其他任职：江苏省金属学会副理事长，江苏省热处理及表面改性工程技术研究中心副主任，江苏省机械工程学会材料工程专业委员会副理事长，江苏省复合材料学会常务理事
毕业院校：南京航空航天大学
学历：南京航空航天大学
学位：工学博士学位
所在单位：材料科学与技术学院
办公地点：江宁校区东区D10-材料楼A511
联系方式：13951818597
电子邮箱：
Facile Synthesis and Hierarchical Assembly of Flowerlike NiO Structures with Enhanced Dielectric and Microwave Absorption Properties
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所属单位：材料科学与技术学院
发表刊物：ACS APPLIED MATERIALS & INTERFACES
关键字：nickel oxide hierarchical structure dielectric property interfacial polarization microwave absorption
摘要：In this work, two novel flowerlike NiO hierarchical structures, rose flower (S1) and silk-flower (S2), were synthesized by using a facial hydrothermal method, coupled with subsequent postannealing process. Structures, morphologies, and magnetic and electromagnetic properties of two NiO structures have been systematically investigated. SEM and TEM results suggested that Si had a hierarchical rose-flower architecture with diameters in the range of 4-7 mu m, whereas S2 exhibited a porous silk-flower architecture with diameters of 0.7-1.0 mu m. Electromagnetic performances indicated that the NiO hierarchical structures played a crucial role in determining their dielectric behavior and impedance matching characteristic, which further influenced the microwave attenuation property of absorbers based on them. Due to its hierarchical and porous architectures, S2 had higher microwave absorption performances than Si. The maximum R-L value for sample S2 can reach -65.1 dB at 13.9 GHz, while an efficient bandwidth of 3 GHz was obtained. In addition, the mechanism of the improved microwave absorption were discussed in detail. It is expected that our NiO hierarchical structures synthesized in this work could be used as a reference to design novel microwave absorption materials.
ISSN号：1944-8244
是否译文：否
发表时间：2017-05-17
合写作者：Liu, Peijiang,Ng, Vincent Ming Hong,周金堂,Lei, Yiming,杨志鸿,Lv, Hualiang,Kong, Ling Bing
通讯作者：姚正军,周金堂,Kong, Ling Bing,姚正军