A novel synthesis method of magnetic porous carbon composites for microwave absorption

被引：13

作者：

Shen, Zhangtao ^{[1
,2
]}

Zu, Yapei ^{[2
]}

Chen, Yuqiu ^{[2
,3
]}

Ma, Song ^{[3
]}

Zhang, Zhidong

Gong, Jun ^{[2
]}

Sun, Chao ^{[2
]}

机构：

[1] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China

[2] Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China

[3] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

SYNTHETIC METALS | 2022年 / 291卷

关键词：

Porous carbon composites; Magnetic materials; Sol -gel method; Microwave absorption; ELECTROMAGNETIC-WAVE ABSORPTION; AT-C; MICROSPHERES; NANOPARTICLES;

D O I：

10.1016/j.synthmet.2022.117184

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A novel combined process of sol-gel method and subsequent in-situ pyrolysis was proposed to prepare magnetic porous carbon composites. Wheat flour was used as the raw material to prepare porous carbon matrix, and three composites doped with different magnetic metals (Co, Ni and Fe20Ni80) were prepared through adding different metal salts to wheat flour. The three composites show similar morphologies and are composed of porous carbon matrix and magnetic metal particles embedded in the matrix. Porous carbon matrix optimizes impedance matching and provides dielectric loss and multiple reflection and diffraction loss to incident electromagnetic waves. Magnetic metal particles endow the composites with ferromagnetic characteristics and magnetic loss ability. The three composites all exhibit outstanding microwave absorption performance and have the potential to become microwave absorbing materials.

引用

页数：8

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