Templated synthesis of highly ordered mesoporous cobalt ferrite and its microwave absorption properties

被引：24
|
作者：
Li Guo-Min [1 ,2 ]
Wang Lian-Cheng [1 ]
Xu Yao [1 ]
机构：
[1] Chinese Acad Sci, Inst Coal Chem, Key Lab Carbon Mat, Taiyuan 030001, Peoples R China
[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China
来源：
CHINESE PHYSICS B | 2014年 / 23卷 / 08期
关键词：
two-solvent; mesoporous; cobalt ferrite; microwave absorption; PHOTOCATALYTIC PROPERTIES; FERROMAGNETIC PARTICLES; MAGNETIC-PROPERTIES; THIN-FILMS; SILICA; CARBON; MECHANISM; SBA-15; WALLS;
D O I：
10.1088/1674-1056/23/8/088105
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Based on the nanocasting strategy, highly ordered mesoporous CoFe2O4 is synthesized via the 'two-solvent' impregnation method using a mesoporous SBA-15 template. An ordered two-dimensional (P6mm) structure is preserved for the CoFe2O4/SBA-15 composite after the nanocasting. After the SBA-15 template is dissolved by NaOH solution, a mesoporous structure composed of aligned nanoparticles can be obtained, and the P6mm structure of the parent SBA-15 is preserved. With a high specific surface area (above 90 m(2)/g) and ferromagnetic behavior, the obtained material shows potential in light weight microwave absorption application. The minimum reflection loss (RL) can reach - 18 dB at about 16 GHz with a thickness of 2 mm and the corresponding absorption bandwidth is 4.5 GHz.
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页数：7
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