Microwave Electromagnetic and Absorption Properties of N-Doped Ordered Mesoporous Carbon Decorated with Ferrite Nanoparticles

被引:72
作者
Shen, Guozhu [1 ]
Mei, Buqing [1 ]
Wu, Hongyan [1 ]
Wei, Hongyu [2 ]
Fang, Xumin [3 ]
Xu, Yewen [3 ]
机构
[1] Nanjing Univ Informat Sci & Technol, Sch Phys & Optoelect Engn, Nanjing 210044, Jiangsu, Peoples R China
[2] Nanjing Univ Aeronaut & Astronaut, Coll Mech & Elect Engn, Nanjing 210016, Jiangsu, Peoples R China
[3] Sci & Technol Near Surface Detect Lab, Wuxi 214035, Peoples R China
基金
中国国家自然科学基金;
关键词
LITHIUM-ION BATTERIES; ABSORBING PROPERTIES; HYDROTHERMAL SYNTHESIS; FE NANOPARTICLES; PERFORMANCE; NANOCOMPOSITES; COMPOSITES; NANOTUBES; SPHERE; NICKEL;
D O I
10.1021/acs.jpcc.6b10906
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
Lightweight nitrogen-doped ordered mesoporous carbon (NOMC) with high specific surface area and pore volume have been prepared through self-assembly and subsequent heat treatment route. The spherical NOMC particles are decorated with CoFe2O4 nanoparticles via coprecipitation method to enhance their microwave absorption property. The electromagnetic parameters of the NOMC and CoFe2,04/NOMC composites are measured and the microwave reflection loss properties are evaluated in the frequency range of 0.5-18 GHz. The results show that both the real part and imaginary part of permittivity of NOMC totally decline and the real part of permeability increases with the introduction of ferrite. However, the negative values of the imaginary part of the complex permeability appear for the CoFe2O4/NOMC composites, which may be caused by enhanced eddy current effect due to the introduction of ferrite. The reflection loss results exhibit that the CoFe2O4/NOMC composites have excellent microwave absorption performances. The absorption bandwidth less than 10 dB reaches 5.0 GHz (11.9-16.9 GHz) for 40-F/NOMC composite (40 wt % ferrite) with 1.5 mm of thickness and the minimum reflection loss value is up to -38.3 dB at 3.9 GHz for 30-F/NOMC composite with 4.0 mm of thickness. The excellent absorption properties derive from the synergistic effect between dielectric loss of NOMC and magnetic loss of ferrite and better impendence matching at air and ferrite/NOMC composite interface. Thus, the lightweight ferrite/NOMC composites exhibit their great potential as microwave absorbing materials.
引用
收藏
页码:3846 / 3853
页数:8
相关论文
共 51 条
[41]   Ultrathin BaTiO3 Nanowires with High Aspect Ratio: A Simple One-Step Hydrothermal Synthesis and Their Strong Microwave Absorption [J].
Yang, Jin ;
Zhang, Jie ;
Liang, Chongyun ;
Wang, Min ;
Zhao, Pengfei ;
Liu, Mengmei ;
Liu, Jiwei ;
Che, Renchao .
ACS APPLIED MATERIALS & INTERFACES, 2013, 5 (15) :7146-7151
[42]   Facile Fabrication of Composition-Tuned Ru-Ni Bimetallics in Ordered Mesoporous Carbon for Levulinic Acid Hydrogenation [J].
Yang, Ying ;
Gao, Guang ;
Zhang, Xin ;
Li, Fuwei .
ACS CATALYSIS, 2014, 4 (05) :1419-1425
[43]   Designed Fabrication and Characterization of Three-Dimensionally Ordered Arrays of Core-Shell Magnetic Mesoporous Carbon Microspheres [J].
Yuan, Kaiping ;
Che, Renchao ;
Cao, Qi ;
Sun, Zhenkun ;
Yue, Qin ;
Deng, Yonghui .
ACS APPLIED MATERIALS & INTERFACES, 2015, 7 (09) :5312-5319
[44]   Ge/GeO2-Ordered Mesoporous Carbon Nanocomposite for Rechargeable Lithium -Ion Batteries with a Long-Term Cycling Performance [J].
Zeng, Lingxing ;
Huang, Xiaoxia ;
Chen, Xi ;
Zheng, Cheng ;
Qian, Qingrong ;
Chen, Qinghua ;
Wei, Mingdeng .
ACS APPLIED MATERIALS & INTERFACES, 2016, 8 (01) :232-239
[45]   MoO2-Ordered Mesoporous Carbon Nanocomposite as an Anode Material for Lithium-Ion Batteries [J].
Zeng, Lingxing ;
Zheng, Cheng ;
Deng, Cuilin ;
Ding, Xiaokun ;
Wei, Mingdeng .
ACS APPLIED MATERIALS & INTERFACES, 2013, 5 (06) :2182-2187
[46]   Preparation and microwave absorption properties of Ag-doped BaTiO3 nanocomposites [J].
Zhang, Meng ;
Zheng, Ji ;
Liang, Lu ;
Jiang, Fei ;
Wang, Ying .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2014, 368 :198-201
[47]   Enhanced Microwave Absorption Property of Reduced Graphene Oxide (RGO)-MnFe2O4 Nanocomposites and Polyvinylidene Fluoride [J].
Zhang, Xiao-Juan ;
Wang, Guang-Sheng ;
Cao, Wen-Qiang ;
Wei, Yun-Zhao ;
Liang, Jun-Fei ;
Guo, Lin ;
Cao, Mao-Sheng .
ACS APPLIED MATERIALS & INTERFACES, 2014, 6 (10) :7471-7478
[48]   A covalent route for efficient surface modification of ordered mesoporous carbon as high performance microwave absorbers [J].
Zhou, Hu ;
Wang, Jiacheng ;
Zhuang, Jiandong ;
Liu, Qian .
NANOSCALE, 2013, 5 (24) :12502-12511
[49]   Electromagnetic and microwave-absorbing properties of magnetic nickel ferrite nanocrystals [J].
Zhu, Weimo ;
Wang, Lei ;
Zhao, Rui ;
Ren, Jiawen ;
Lu, Guanzhong ;
Wang, Yanqin .
NANOSCALE, 2011, 3 (07) :2862-2864
[50]   One-step synthesis and excellent microwave absorption of hierarchical tree-like ZnO nanostructures [J].
Zhuo, Renfu ;
Wang, Yinong ;
Yan, De ;
Li, Shuankui ;
Liu, Ying ;
Wang, Fengyi .
MATERIALS LETTERS, 2014, 117 :34-36