Cage-like eggshell membrane-derived Co-CoxSy-Ni/N,S-codoped carbon composites for electromagnetic wave absorption

被引：41

作者：

Chang, Qilin ^{[1
,2
,3
]}

Li, Cuiping ^{[1
,2
,3
]}

Sui, Jing ^{[4
]}

Waterhouse, Geoffrey I. N. ^{[5
]}

Zhang, Zhi-Ming ^{[1
,2
,3
]}

Yu, Liang-min ^{[1
,2
,3
]}

机构：

[1] Ocean Univ China, Minist Educ, Frontiers Sci Ctr Deep Ocean Multispheres & Earth, Qingdao 266100, Peoples R China

[2] Ocean Univ China, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China

[3] Pilot Natl Lab Marine Sci & Technol Qingdao, Open Studio Marine Corros & Protect, Qingdao 266100, Peoples R China

[4] Qingdao Univ Sci & Technol, Key Lab Rubber Plast, Minist Educ Shandong Prov Lab Rubber Plast, Qingdao 266043, Peoples R China

[5] Univ Auckland, Sch Chem Sci, Auckland 1142, New Zealand

来源：

CHEMICAL ENGINEERING JOURNAL | 2022年 / 430卷

关键词：

Biomass carbon; Dual heteroatom doping; bimetallic CoNi; Electromagnetic wave absorption; MICROWAVE-ABSORPTION; FACILE SYNTHESIS; POROUS CARBON; BROAD-BAND; NANOPARTICLES; NANOCOMPOSITES; PERFORMANCE; LIGHTWEIGHT; COTTON; CONSTRUCTION;

D O I：

10.1016/j.cej.2021.132650

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Eggshell membrane-derived Co-CoxSy-Ni/N,S-codoped carbon composites (EM-Co-CoxSy-Ni/N,S-C) were synthesized by heating a Co2+-Ni2+-2-methylimidazole/eggshell membrane precursor in a N-2 atmosphere. The dual atom (nitrogen (N) and sulfur (S)) doping of C was realized easily by using eggshell membrane as the joint source of carbon, N and S. The EM-Co-CoxSy-Ni/N,S-C composites showed remarkable electromagnetic wave absorption (EMWA) performance. The minimum reflection loss (RLmin) reached-48.5 dB (10.1 GHz, 3.5 mm) and the Effective absorption bandwidth (EAB) achieved 7.4 GHz (10.3-17.7 GHz, 3 mm). By adjusting the concentration of 2-methylimidazole, impressive RLmin (-41.5 dB, 13.9 GHz) and EAB (6.5 GHz, 11.5-18 GHz) could be achieved at an absorber thickness of 2.5 mm. Eggshell membrane exhibits considerable potential in designing heteroatom doped carbon based EMW absorbents with high-performance and low cost.

引用

页数：12

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