Core-shell architecture of Ni-Co MOF wrapped by a heterogeneous FeBTC@PPy layer for high-performance EMI shielding

Quyen Vu Thi; Yoolee Lee; Hye Yeon Cho; Junpyo Hong; Chong Min Koo; Ngo Trinh Tung; Daewon Sohn

doi:10.1016/j.synthmet.2021.116929

Core-shell architecture of Ni-Co MOF wrapped by a heterogeneous FeBTC@PPy layer for high-performance EMI shielding

Quyen Vu Thi, Yoolee Lee, Hye Yeon Cho, Junpyo Hong, Chong Min Koo, Ngo Trinh Tung, Daewon Sohn

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

4 Citations (Scopus)

Abstract

High-performance EMI shielding of a core-shell nanocomposite of Ni-Co MOF (core) wrapped by a heterogeneous layer of FeBTC MOF and polymeric polypyrrole (PPy) (shell) named Ni-Co/FeBTC@PPy is reported. Herein, the spherical structure Ni-Co MOF was firstly prepared and employed as nucleation sites for polymerization of pyrrole monomer utilizing FeCl₃ as an in situ oxidant. Surprising, ionic iron not only played the role of oxidizing agent in the polymerization but was also able to interact with the 1,3,5-benzenetricarboxylate (BTC) organic linker existing in the frame of Ni-Co MOF to generate a new metallic MOF named FeBTC. The simultaneous formation of FeBTC@PPy in the one step polymerization inadvertently enriched both the variety of chemical components and uptake of the specific surface area to the productive nanocomposite. The as-synthesized Ni-Co/FeBTC@PPy nanocomposite displayed its best shielding efficiency at a weight ratio of 1:3 of Ni-Co MOF: pyrrole monomer, with a maximum shielding SE_T value of 34.1 dB compared to its value of 20.5 dB and 4 dB for the individual components of PPy and Ni-Co MOF, respectively. The sustainable EM attenuation property of Ni-Co/FeBTC@PPy can be ascribed mainly to dielectric loss along with interfacial polarization, multiple internal reflection, and multiple scattering.

Original language	English
Article number	116929
Journal	Synthetic Metals
Volume	281
DOIs	https://doi.org/10.1016/j.synthmet.2021.116929
Publication status	Published - 2021 Nov
Externally published	Yes

Keywords

Core-shell
Electromagnetic shielding
FeBTC@PPy
Heterogeneous layer
Ni-Co MOF

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

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10.1016/j.synthmet.2021.116929

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@article{dcb4fa66c7bb41518e6a9629df836b39,

title = "Core-shell architecture of Ni-Co MOF wrapped by a heterogeneous FeBTC@PPy layer for high-performance EMI shielding",

abstract = "High-performance EMI shielding of a core-shell nanocomposite of Ni-Co MOF (core) wrapped by a heterogeneous layer of FeBTC MOF and polymeric polypyrrole (PPy) (shell) named Ni-Co/FeBTC@PPy is reported. Herein, the spherical structure Ni-Co MOF was firstly prepared and employed as nucleation sites for polymerization of pyrrole monomer utilizing FeCl3 as an in situ oxidant. Surprising, ionic iron not only played the role of oxidizing agent in the polymerization but was also able to interact with the 1,3,5-benzenetricarboxylate (BTC) organic linker existing in the frame of Ni-Co MOF to generate a new metallic MOF named FeBTC. The simultaneous formation of FeBTC@PPy in the one step polymerization inadvertently enriched both the variety of chemical components and uptake of the specific surface area to the productive nanocomposite. The as-synthesized Ni-Co/FeBTC@PPy nanocomposite displayed its best shielding efficiency at a weight ratio of 1:3 of Ni-Co MOF: pyrrole monomer, with a maximum shielding SET value of 34.1 dB compared to its value of 20.5 dB and 4 dB for the individual components of PPy and Ni-Co MOF, respectively. The sustainable EM attenuation property of Ni-Co/FeBTC@PPy can be ascribed mainly to dielectric loss along with interfacial polarization, multiple internal reflection, and multiple scattering.",

keywords = "Core-shell, Electromagnetic shielding, FeBTC@PPy, Heterogeneous layer, Ni-Co MOF",

author = "Thi, {Quyen Vu} and Yoolee Lee and Cho, {Hye Yeon} and Junpyo Hong and Koo, {Chong Min} and Tung, {Ngo Trinh} and Daewon Sohn",

note = "Funding Information: This research was supported by the Basic Science Research Program administered through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2020R1A6A1A06046728 ) and ( NRF-2019R1F1A1056947 ). Tung and Quyen appreciate financial support from VAST (Grant No. NCVCC 06.10/22-22 ), Vietnam. Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2021",

month = nov,

doi = "10.1016/j.synthmet.2021.116929",

language = "English",

volume = "281",

journal = "Synthetic Metals",

issn = "0379-6779",

publisher = "Elsevier BV",

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T1 - Core-shell architecture of Ni-Co MOF wrapped by a heterogeneous FeBTC@PPy layer for high-performance EMI shielding

AU - Thi, Quyen Vu

AU - Lee, Yoolee

AU - Cho, Hye Yeon

AU - Hong, Junpyo

AU - Koo, Chong Min

AU - Tung, Ngo Trinh

AU - Sohn, Daewon

N1 - Funding Information: This research was supported by the Basic Science Research Program administered through the National Research Foundation of Korea (NRF) funded by the Ministry of Education ( 2020R1A6A1A06046728 ) and ( NRF-2019R1F1A1056947 ). Tung and Quyen appreciate financial support from VAST (Grant No. NCVCC 06.10/22-22 ), Vietnam. Publisher Copyright: © 2021 Elsevier B.V.

PY - 2021/11

Y1 - 2021/11

N2 - High-performance EMI shielding of a core-shell nanocomposite of Ni-Co MOF (core) wrapped by a heterogeneous layer of FeBTC MOF and polymeric polypyrrole (PPy) (shell) named Ni-Co/FeBTC@PPy is reported. Herein, the spherical structure Ni-Co MOF was firstly prepared and employed as nucleation sites for polymerization of pyrrole monomer utilizing FeCl3 as an in situ oxidant. Surprising, ionic iron not only played the role of oxidizing agent in the polymerization but was also able to interact with the 1,3,5-benzenetricarboxylate (BTC) organic linker existing in the frame of Ni-Co MOF to generate a new metallic MOF named FeBTC. The simultaneous formation of FeBTC@PPy in the one step polymerization inadvertently enriched both the variety of chemical components and uptake of the specific surface area to the productive nanocomposite. The as-synthesized Ni-Co/FeBTC@PPy nanocomposite displayed its best shielding efficiency at a weight ratio of 1:3 of Ni-Co MOF: pyrrole monomer, with a maximum shielding SET value of 34.1 dB compared to its value of 20.5 dB and 4 dB for the individual components of PPy and Ni-Co MOF, respectively. The sustainable EM attenuation property of Ni-Co/FeBTC@PPy can be ascribed mainly to dielectric loss along with interfacial polarization, multiple internal reflection, and multiple scattering.

AB - High-performance EMI shielding of a core-shell nanocomposite of Ni-Co MOF (core) wrapped by a heterogeneous layer of FeBTC MOF and polymeric polypyrrole (PPy) (shell) named Ni-Co/FeBTC@PPy is reported. Herein, the spherical structure Ni-Co MOF was firstly prepared and employed as nucleation sites for polymerization of pyrrole monomer utilizing FeCl3 as an in situ oxidant. Surprising, ionic iron not only played the role of oxidizing agent in the polymerization but was also able to interact with the 1,3,5-benzenetricarboxylate (BTC) organic linker existing in the frame of Ni-Co MOF to generate a new metallic MOF named FeBTC. The simultaneous formation of FeBTC@PPy in the one step polymerization inadvertently enriched both the variety of chemical components and uptake of the specific surface area to the productive nanocomposite. The as-synthesized Ni-Co/FeBTC@PPy nanocomposite displayed its best shielding efficiency at a weight ratio of 1:3 of Ni-Co MOF: pyrrole monomer, with a maximum shielding SET value of 34.1 dB compared to its value of 20.5 dB and 4 dB for the individual components of PPy and Ni-Co MOF, respectively. The sustainable EM attenuation property of Ni-Co/FeBTC@PPy can be ascribed mainly to dielectric loss along with interfacial polarization, multiple internal reflection, and multiple scattering.

KW - Core-shell

KW - Electromagnetic shielding

KW - FeBTC@PPy

KW - Heterogeneous layer

KW - Ni-Co MOF

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U2 - 10.1016/j.synthmet.2021.116929

DO - 10.1016/j.synthmet.2021.116929

M3 - Article

AN - SCOPUS:85116598763

SN - 0379-6779

VL - 281

JO - Synthetic Metals

JF - Synthetic Metals

M1 - 116929

ER -

Core-shell architecture of Ni-Co MOF wrapped by a heterogeneous FeBTC@PPy layer for high-performance EMI shielding

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Keywords

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