In situ anchoring carbon nanotubes on the Ni/C nanosheets with controllable thickness for boosting the electromagnetic waves absorption

被引：31

作者：

Wen, Bo ^{[1
]}

Yang, Haibo ^{[1
]}

Lin, Ying ^{[1
]}

Wang, Lei ^{[1
]}

Ma, Liang ^{[1
]}

Qiu, Yun ^{[1
]}

机构：

[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Shaanxi Key Lab Green Preparat & Functionalizat I, Xian 710021, Peoples R China

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2020年 / 138卷 / 138期

基金：

中国国家自然科学基金;

关键词：

Metal organic frameworks nanosheets; Hierarchical Ni/C carbon nanotubes; Electromagnetic waves absorption; ENHANCED MICROWAVE-ABSORPTION; ABSORBING PERFORMANCE; COMPOSITES; MICROSPHERES; LIGHTWEIGHT; FRAMEWORK; GRAPHENE; HETEROSTRUCTURES; FABRICATION; ULTRATHIN;

D O I：

10.1016/j.compositesa.2020.106044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Constructing two-dimensional materials with large specific surface area is of great significance for electromagnetic (EM) waves absorption. Herein, through adding hexamethylenetetramine (HMT) and F127, the thickness of the two-dimensional (2D) nickel metal organic frameworks (Ni-MOFs) nanosheets was altered. The composites with larger specific surface area are adjusted by pyrolysis in argon. Besides, the synergetic effect of dielectric loss and magnetic loss for the Ni/C composites modified with carbon nanotubes (Ni/C-CNTs) are favorable for the attenuation of EM wave. A maximum reflection loss (RLmax) of -71.6 dB is achieved and the effective absorption bandwidth is 4.7 GHz at thin thickness (2.2 mm) in the case of containing only 10 wt% of the samples in the matrix. The lightweight and controllable thickness of Ni/C carbon nanotubes composites with excellent EM absorption properties endow them with potential applications in the EM waves absorption.

引用

页数：10

共 58 条

[1] A hybrid comprised of porous carbon nanofibers and rGO for efficient electromagnetic wave absorption [J].