Facile construction of core-shell Carbon@CoNiO2 derived from yeast for broadband and high-efficiency microwave absorption

被引：15

作者：

Lu, Zhenxia ^{[1
]}

Ren, Fang ^{[1
,3
]}

Guo, Zhengzheng ^{[2
]}

Dai, Zhong ^{[2
]}

Fu, Baiqiao ^{[1
]}

Zong, Ze ^{[1
]}

Zhang, Fudong ^{[1
]}

Jin, Yanling ^{[1
]}

Chen, Zhengyan ^{[1
]}

Ren, Penggang ^{[1
,2
]}

机构：

[1] Xian Univ Technol, Fac Printing Packaging Engn & Digital Media Techn, Xian 710048, Shaanxi, Peoples R China

[2] Xian Univ Technol, Sch Mat Sci & Engn, Xian 710048, Shaanxi, Peoples R China

[3] Sichuan Univ, Coll Polymer Sci & Engn, State Key Lab Polymer Mat Engn, Chengdu 610065, Sichuan, Peoples R China

来源：

JOURNAL OF COLLOID AND INTERFACE SCIENCE | 2022年 / 625卷

基金：

中国国家自然科学基金;

关键词：

Core-shell structure; Nano-grass structured CoNiO2; Interface polarization; Microwave absorption; AT-C; CARBON; LIGHTWEIGHT; COMPOSITES; BIOMASS; PERFORMANCE; NANOFIBERS; ELECTRODES; ABSORBER; AEROGEL;

D O I：

10.1016/j.jcis.2022.06.012

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：

Manufacturing dielectric/magnetic composites with hierarchical structure is regard as a promising strategy for the progress of high-performance microwave absorption (MA) materials. In this paper, the nano grass structured CoNiO2 magnetic shell was uniformly anchored on the yeast-derived carbon micro spheres by in-situ one-pot synthesis method. Profiting from the unique nano-grass and core-shell structure, capable dielectric/magnetic loss, along with improved impedance matching, the prepared absorber realizes desirable MA performance. The minimum reflection loss (RLmin) reaches up to-44.06 dB at 6.56 GHz. Moreover, the effective absorption bandwidth (EAB, reflection loss (RL) <-10 dB) accomplishes 7.04 GHz under a low filler loading of 20 wt%. This work endeavors a valuable insight for designing innovative core-shell structured materials with high-efficiency MA and broad bandwidth.(C) 2022 Elsevier Inc. All rights reserved.

引用

页码：415 / 424

页数：10

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