ZIF-67 derived porous core-shell nanocomposites for high-efficiency electromagnetic absorption

Cankun Ma; Yicheng Wang; Chenghao Zhang; Yufei Huang; Xiuqin Zhang; Jing Peng; Chunpeng Chai; Mengfei Yuan; Huiling Ma; Maolin Zhai

doi:10.1016/j.apsusc.2023.157913

ZIF-67 derived porous core-shell nanocomposites for high-efficiency electromagnetic absorption

Cankun Ma
, Yicheng Wang
, Chenghao Zhang
, Yufei Huang
, Xiuqin Zhang
, Jing Peng
, Chunpeng Chai
, Mengfei Yuan
, Huiling Ma^*
, Maolin Zhai

^*Corresponding author for this work

School of Material Science and Engineering

Beijing Institute of Fashion Technology
Peking University
Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

29 Citations (Scopus)

Abstract

N-doped porous core-shell nanocomposite is considered to be a competent candidate for the absorbing of electromagnetic wave (EMW). In this work, polydopamine (PDA) wrapped ZIF-67 (Z@P) precursors with the core-shell structure were obtained through ZIF-67 triggered dopamine self-polymerization. After high-temperature pyrolysis treatment, the N-doped graphitized carbon layers wrapped cobalt (Co@CNs) absorber with porous structure was obtained, which exhibited high efficiency and adjustable EMW absorbing properties. The minimum reflection loss (RL_min) of Co@CN-60 approached −59.08 dB at 17.7 GHz with a thickness of 1.7 mm. The effective absorption bandwidth (EAB) reached 5.8 GHz with a corresponding thickness of 2.3 mm. Besides, the RL_min of Co@CN-90 reaches −44.07 dB at 14.5 GHz (thickness 2.0 mm), and the EAB is 5.9 GHz. Therefore, the porous core-shell Co@CNs nanocomposite is expected to be a promising EMW absorption material.

Original language	English
Article number	157913
Journal	Applied Surface Science
Volume	637
DOIs	https://doi.org/10.1016/j.apsusc.2023.157913
Publication status	Published - 15 Nov 2023

Keywords

Electromagnetic wave absorber
Metal-organic frameworks
Polydopamine
Porous core-shell structure

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10.1016/j.apsusc.2023.157913

Cite this

@article{7bec1193cb4243bc9d449cd2e27d2b97,

title = "ZIF-67 derived porous core-shell nanocomposites for high-efficiency electromagnetic absorption",

abstract = "N-doped porous core-shell nanocomposite is considered to be a competent candidate for the absorbing of electromagnetic wave (EMW). In this work, polydopamine (PDA) wrapped ZIF-67 (Z@P) precursors with the core-shell structure were obtained through ZIF-67 triggered dopamine self-polymerization. After high-temperature pyrolysis treatment, the N-doped graphitized carbon layers wrapped cobalt (Co@CNs) absorber with porous structure was obtained, which exhibited high efficiency and adjustable EMW absorbing properties. The minimum reflection loss (RLmin) of Co@CN-60 approached −59.08 dB at 17.7 GHz with a thickness of 1.7 mm. The effective absorption bandwidth (EAB) reached 5.8 GHz with a corresponding thickness of 2.3 mm. Besides, the RLmin of Co@CN-90 reaches −44.07 dB at 14.5 GHz (thickness 2.0 mm), and the EAB is 5.9 GHz. Therefore, the porous core-shell Co@CNs nanocomposite is expected to be a promising EMW absorption material.",

keywords = "Electromagnetic wave absorber, Metal-organic frameworks, Polydopamine, Porous core-shell structure",

author = "Cankun Ma and Yicheng Wang and Chenghao Zhang and Yufei Huang and Xiuqin Zhang and Jing Peng and Chunpeng Chai and Mengfei Yuan and Huiling Ma and Maolin Zhai",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = nov,

day = "15",

doi = "10.1016/j.apsusc.2023.157913",

language = "English",

volume = "637",

journal = "Applied Surface Science",

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TY - JOUR

T1 - ZIF-67 derived porous core-shell nanocomposites for high-efficiency electromagnetic absorption

AU - Ma, Cankun

AU - Wang, Yicheng

AU - Zhang, Chenghao

AU - Huang, Yufei

AU - Zhang, Xiuqin

AU - Peng, Jing

AU - Chai, Chunpeng

AU - Yuan, Mengfei

AU - Ma, Huiling

AU - Zhai, Maolin

PY - 2023/11/15

Y1 - 2023/11/15

N2 - N-doped porous core-shell nanocomposite is considered to be a competent candidate for the absorbing of electromagnetic wave (EMW). In this work, polydopamine (PDA) wrapped ZIF-67 (Z@P) precursors with the core-shell structure were obtained through ZIF-67 triggered dopamine self-polymerization. After high-temperature pyrolysis treatment, the N-doped graphitized carbon layers wrapped cobalt (Co@CNs) absorber with porous structure was obtained, which exhibited high efficiency and adjustable EMW absorbing properties. The minimum reflection loss (RLmin) of Co@CN-60 approached −59.08 dB at 17.7 GHz with a thickness of 1.7 mm. The effective absorption bandwidth (EAB) reached 5.8 GHz with a corresponding thickness of 2.3 mm. Besides, the RLmin of Co@CN-90 reaches −44.07 dB at 14.5 GHz (thickness 2.0 mm), and the EAB is 5.9 GHz. Therefore, the porous core-shell Co@CNs nanocomposite is expected to be a promising EMW absorption material.

AB - N-doped porous core-shell nanocomposite is considered to be a competent candidate for the absorbing of electromagnetic wave (EMW). In this work, polydopamine (PDA) wrapped ZIF-67 (Z@P) precursors with the core-shell structure were obtained through ZIF-67 triggered dopamine self-polymerization. After high-temperature pyrolysis treatment, the N-doped graphitized carbon layers wrapped cobalt (Co@CNs) absorber with porous structure was obtained, which exhibited high efficiency and adjustable EMW absorbing properties. The minimum reflection loss (RLmin) of Co@CN-60 approached −59.08 dB at 17.7 GHz with a thickness of 1.7 mm. The effective absorption bandwidth (EAB) reached 5.8 GHz with a corresponding thickness of 2.3 mm. Besides, the RLmin of Co@CN-90 reaches −44.07 dB at 14.5 GHz (thickness 2.0 mm), and the EAB is 5.9 GHz. Therefore, the porous core-shell Co@CNs nanocomposite is expected to be a promising EMW absorption material.

KW - Electromagnetic wave absorber

KW - Metal-organic frameworks

KW - Polydopamine

KW - Porous core-shell structure

UR - https://www.scopus.com/pages/publications/85164227108

U2 - 10.1016/j.apsusc.2023.157913

DO - 10.1016/j.apsusc.2023.157913

M3 - Article

AN - SCOPUS:85164227108

SN - 0169-4332

VL - 637

JO - Applied Surface Science

JF - Applied Surface Science

M1 - 157913

ER -

ZIF-67 derived porous core-shell nanocomposites for high-efficiency electromagnetic absorption

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Keywords

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