Enhanced microwave-absorption with carbon-encapsulated Fe-Co particles on reduced graphene oxide nanosheets with nanoscale-holes in the basal plane

被引：52
作者：
Li, Suping [1 ,2 ]
Huang, Ying [1 ,2 ]
Ling, Ding [1 ,2 ]
Zhang, Na [1 ,2 ]
Zong, Meng [1 ,2 ]
Qin, Xiulan [1 ,2 ]
Liu, Panbo [1 ,2 ]
机构：
[1] Northwestern Polytech Univ, Res & Dev Inst Shenzhen, Xian 710072, Shaanxi, Peoples R China
[2] Northwestern Polytech Univ, Minist Educ, Sch Sci, MOE Key Lab Mat Phys & Chem Extrodinary Condit, Xian 710072, Shaanxi, Peoples R China
来源：
JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2019年 / 544卷
基金：
中国国家自然科学基金;
关键词：
Holey reduced graphene oxide; Magnetic nanoparticles; Microwave absorption; ELECTROMAGNETIC ABSORPTION; PERFORMANCE; COMPOSITES; NANOCOMPOSITE; FECO-AT-SIO2; FABRICATION; PROPERTY;
D O I：
10.1016/j.jcis.2019.02.035
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, an Fe-Co alloy is coated with carbon and decorated on a holey reduced graphene oxide nanosheet (FeCo@C/HRGO) composite. The structure is synthesized using liquid-phase reduction and hydrothermal processes followed by high-temperature calcination. The FeCo@C/HRGO composite is identified and characterized using XRD, XPS, Raman spectroscopy, TEM, and SEM. This novel composite exhibits excellent electromagnetic-wave absorption properties. The maximum reflection loss for FeCo@C/HRGO reaches -76.6 dB at 16.64 GHz with a thickness of 1.7 mm. The R-L below -10 dB reaches 14.32 GHz for a thickness of 1.7-5.0 mm. This confirms that microwave absorption of FeCo@C can be substantially improved upon decoration with HRGO nanosheets. (C) 2019 Elsevier Inc. All rights reserved.
引用
收藏
页码：188 / 197
页数：10
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