Fe/Fe3O4@mSiO2Core-Shell Nanostructures for Broad-Band Microwave Absorption

Yuanyuan Zhang; Xueyin Sun; Yong Yuan; Wenzhu Shao; Liang Zhen; Jiantang Jiang

doi:10.1021/acsanm.2c05170

Fe/Fe₃O₄@mSiO₂Core-Shell Nanostructures for Broad-Band Microwave Absorption

Yuanyuan Zhang
, Xueyin Sun^*
, Yong Yuan
, Wenzhu Shao
, Liang Zhen
, Jiantang Jiang^*

^*Corresponding author for this work

School of Materials Science and Engineering

Harbin Institute of Technology
Shanghai Aerospace Precision Machinery Research Institute
Harbin Institute of Technology (Shenzhen)

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

19 Scopus citations

Abstract

Fe/Fe₃O₄composite particles with mesoporous silica (mSiO₂) shells were successfully prepared via solvothermal reaction combined with hydrogen-thermal reduction. The introduction of mSiO₂on the surfaces of Fe₃O₄constructs a ventilated frame and thereafter sustains the dispersion of the fine Fe particles that emerge from the reduction reaction. The conversion of Fe₃O₄to Fe nanoparticles enhances the ferromagnetic loss, while the Fe₃O₄/Fe/mSiO₂interfaces induce an intensified dielectric loss. Fe/Fe₃O₄@mSiO₂-500 (FFm-500) presents excellent electromagnetic wave-absorbing performances. The coating using FFm-500 as fillers presents a minimum reflection loss of -26.81 dB, together with an effective absorption bandwidth of 6.66 GHz. The results revealed the key role of mSiO₂in the synthesis of Fe/Fe₃O₄nanostructures and the unique potential of Fe/Fe₃O₄@mSiO₂as broad-band EMA fillers.

Original language	English
Pages (from-to)	1422-1431
Number of pages	10
Journal	ACS Applied Nano Materials
Volume	6
Issue number	2
DOIs	https://doi.org/10.1021/acsanm.2c05170
State	Published - 27 Jan 2023

Keywords

Fe/FeO
core-shell nanostructure
hydrogen-thermal reduction
mesoporous silica
microwave absorption

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10.1021/acsanm.2c05170

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@article{9f02f7cd92784773ae0538f58dfc89af,

title = "Fe/Fe3O4@mSiO2Core-Shell Nanostructures for Broad-Band Microwave Absorption",

abstract = "Fe/Fe3O4composite particles with mesoporous silica (mSiO2) shells were successfully prepared via solvothermal reaction combined with hydrogen-thermal reduction. The introduction of mSiO2on the surfaces of Fe3O4constructs a ventilated frame and thereafter sustains the dispersion of the fine Fe particles that emerge from the reduction reaction. The conversion of Fe3O4to Fe nanoparticles enhances the ferromagnetic loss, while the Fe3O4/Fe/mSiO2interfaces induce an intensified dielectric loss. Fe/Fe3O4@mSiO2-500 (FFm-500) presents excellent electromagnetic wave-absorbing performances. The coating using FFm-500 as fillers presents a minimum reflection loss of -26.81 dB, together with an effective absorption bandwidth of 6.66 GHz. The results revealed the key role of mSiO2in the synthesis of Fe/Fe3O4nanostructures and the unique potential of Fe/Fe3O4@mSiO2as broad-band EMA fillers.",

keywords = "Fe/FeO, core-shell nanostructure, hydrogen-thermal reduction, mesoporous silica, microwave absorption",

author = "Yuanyuan Zhang and Xueyin Sun and Yong Yuan and Wenzhu Shao and Liang Zhen and Jiantang Jiang",

year = "2023",

month = jan,

day = "27",

doi = "10.1021/acsanm.2c05170",

language = "英语",

volume = "6",

pages = "1422--1431",

journal = "ACS Applied Nano Materials",

issn = "2574-0970",

publisher = "American Chemical Society",

number = "2",

}

TY - JOUR

T1 - Fe/Fe3O4@mSiO2Core-Shell Nanostructures for Broad-Band Microwave Absorption

AU - Zhang, Yuanyuan

AU - Sun, Xueyin

AU - Yuan, Yong

AU - Shao, Wenzhu

AU - Zhen, Liang

AU - Jiang, Jiantang

PY - 2023/1/27

Y1 - 2023/1/27

N2 - Fe/Fe3O4composite particles with mesoporous silica (mSiO2) shells were successfully prepared via solvothermal reaction combined with hydrogen-thermal reduction. The introduction of mSiO2on the surfaces of Fe3O4constructs a ventilated frame and thereafter sustains the dispersion of the fine Fe particles that emerge from the reduction reaction. The conversion of Fe3O4to Fe nanoparticles enhances the ferromagnetic loss, while the Fe3O4/Fe/mSiO2interfaces induce an intensified dielectric loss. Fe/Fe3O4@mSiO2-500 (FFm-500) presents excellent electromagnetic wave-absorbing performances. The coating using FFm-500 as fillers presents a minimum reflection loss of -26.81 dB, together with an effective absorption bandwidth of 6.66 GHz. The results revealed the key role of mSiO2in the synthesis of Fe/Fe3O4nanostructures and the unique potential of Fe/Fe3O4@mSiO2as broad-band EMA fillers.

AB - Fe/Fe3O4composite particles with mesoporous silica (mSiO2) shells were successfully prepared via solvothermal reaction combined with hydrogen-thermal reduction. The introduction of mSiO2on the surfaces of Fe3O4constructs a ventilated frame and thereafter sustains the dispersion of the fine Fe particles that emerge from the reduction reaction. The conversion of Fe3O4to Fe nanoparticles enhances the ferromagnetic loss, while the Fe3O4/Fe/mSiO2interfaces induce an intensified dielectric loss. Fe/Fe3O4@mSiO2-500 (FFm-500) presents excellent electromagnetic wave-absorbing performances. The coating using FFm-500 as fillers presents a minimum reflection loss of -26.81 dB, together with an effective absorption bandwidth of 6.66 GHz. The results revealed the key role of mSiO2in the synthesis of Fe/Fe3O4nanostructures and the unique potential of Fe/Fe3O4@mSiO2as broad-band EMA fillers.

KW - Fe/FeO

KW - core-shell nanostructure

KW - hydrogen-thermal reduction

KW - mesoporous silica

KW - microwave absorption

UR - https://www.scopus.com/pages/publications/85146327755

U2 - 10.1021/acsanm.2c05170

DO - 10.1021/acsanm.2c05170

M3 - 文章

AN - SCOPUS:85146327755

SN - 2574-0970

VL - 6

SP - 1422

EP - 1431

JO - ACS Applied Nano Materials

JF - ACS Applied Nano Materials

IS - 2

ER -

Fe/Fe₃O₄@mSiO₂Core-Shell Nanostructures for Broad-Band Microwave Absorption

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Keywords

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