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Microwave plasma assisted reduction synthesis of hexagonal cobalt nanosheets with enhanced electromagnetic performances

文献类型：期刊论文

作者Piao, Mingxing2; Zhang, Yilin1; Feng, Shuanglong2; Zhang, Heng2; Zhang, Feng1; Chu, Jin2; Wang, Xiao2; Zhang, Yongna2; Shi, Haofei2; Li, Chaolong2
刊名NANOTECHNOLOGY
出版日期2019-12-06
卷号30期号:49页码:11
ISSN号0957-4484
关键词microwave plasma assisted reduction morphology control technique hexagonal Co nanosheets enhanced electromagnetic properties
DOI10.1088/1361-6528/ab3f04
通讯作者Zhang, Feng(zf080707@cqut.edu.cn) ; Li, Chaolong(lichaolong@cigit.ac.cn)
英文摘要In this study, we employed a microwave plasma assisted reduction (MPAR) method to prepare metallic nanoparticles with desirable morphology. Compared with the hydrogen thermal reduction technique, the MPAR technique could greatly maintain the original morphology of self-sacrificing precursors, as well as proving to be highly efficient, energy-saving and pollution-free. Taking ferromagnetic metallic Co as a forerunner, Co nanosheets with inerratic hexagonal morphology were successfully synthesized on a large scale uniformly. The lateral dimension of the achieved Co nanosheets is in the range of 3 similar to 5 mu m with tens of nanometers in thickness. The intact hexagonal flaky shape of Co nanosheets is beneficial for improving dielectric loss by increasing electric channels and interfacial polarization. Consequently, the minimum reflection loss could reach up to -71 dB at a thin thickness of 1.2 mm. Furthermore, the effective bandwidth (RL < - 10 dB) could be achieved in a wide range of 2.8 similar to 18 GHz by integrating the thickness from 5.0 similar to 1.0 mm, which provides the possibility for applications in electromagnetic shielding and radar stealth fields. It is believed that the MPAR technique is suitable for designing and preparing novel microwave absorbers on the basis of appropriate precursors, providing new opportunities to acquire high-performance microwave absorbers in the future.
资助项目National Natural Science Foundation of China[61601434] ; National Natural Science Foundation of China[51602306] ; Venture Innovation Support Program for Chongqing Overseas Returnees[cx2018134] ; Natural Science Foundation of Chongqing, China[cstc2018jcyjAX0312] ; Natural Science Foundation of Chongqing, China[cstc2018jcyjAX3609] ; Basic Science and Frontier Technology Research Program of Chongqing[2016jcyjA0166]
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
出版者IOP PUBLISHING LTD
WOS记录号WOS:000487214300001
源URL[http://119.78.100.138/handle/2HOD01W0/9521]  
专题微纳制造与系统集成研究中心
通讯作者Zhang, Feng; Li, Chaolong
作者单位1.Chongqing Univ Technol, Phys & Energy Dept, Chongqing 400054, Peoples R China
2.Chinese Acad Sci, Chongqing Inst Green & Intelligent Technol, Key Lab Multiscale Mfg Technol, Chongqing 400714, Peoples R China
推荐引用方式
GB/T 7714		 Piao, Mingxing,Zhang, Yilin,Feng, Shuanglong,et al. Microwave plasma assisted reduction synthesis of hexagonal cobalt nanosheets with enhanced electromagnetic performances[J]. NANOTECHNOLOGY,2019,30(49):11.
APA Piao, Mingxing.,Zhang, Yilin.,Feng, Shuanglong.,Zhang, Heng.,Zhang, Feng.,...&Li, Chaolong.(2019).Microwave plasma assisted reduction synthesis of hexagonal cobalt nanosheets with enhanced electromagnetic performances.NANOTECHNOLOGY,30(49),11.
MLA Piao, Mingxing,et al."Microwave plasma assisted reduction synthesis of hexagonal cobalt nanosheets with enhanced electromagnetic performances".NANOTECHNOLOGY 30.49(2019):11.

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来源：重庆绿色智能技术研究院

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