Facile fabrication of acid-resistant and hydrophobic Fe3O4@SiO2@C magnetic particles for valid oil-water separation application

Hanjie Xie; Zhiliang Wu; Zhenyu Wang; Jiming Lu; Yingzhi Li; Yulin Cao; Hua Cheng

doi:10.1016/j.surfin.2020.100651

Facile fabrication of acid-resistant and hydrophobic Fe₃O₄@SiO₂@C magnetic particles for valid oil-water separation application

Hanjie Xie, Zhiliang Wu, Zhenyu Wang, Jiming Lu, Yingzhi Li^*, Yulin Cao, Hua Cheng

^*Corresponding author for this work

Chemical Engineering

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

25 Scopus citations

Abstract

It is a big challenge to prevent the degradation of magnetic nanoparticles particularly under acid conditions. Here we demonstrated that the stability of magnetic Fe₃O₄ nanoparticles could be substantially improved after double coating with silica and carbon. The dense silica shell and hydrophobic porous carbon shell endowed the magnetic Fe₃O₄@SiO₂@C nanoparticles remarkable anti-corrosion performance even under 10 M of HCl solution. More importantly, the demulsification of asphaltenes-stabilized water-in-toluene emulsion was realized with the aid of 2 wt% emulsion of our proposed double-coated magnetic particles due to their great interfacial activity. Besides, the magnetic Fe₃O₄@SiO₂@C particles could be recycled up to six times while the magnetic Fe₃O₄@C particles would easily lose their interfacial activity. It is the first time to found that the inorganic shells showed a great interfacial activity. Thus, the high separation efficiency, excellent acid-anticorrosion, and easy recyclability of our proposed magnetic particles presented its great potential value in industrial application.

Original language	English
Article number	100651
Journal	Surfaces and Interfaces
Volume	21
DOIs	https://doi.org/10.1016/j.surfin.2020.100651
State	Published - Dec 2020

Keywords

Magnetic core
acid-resistance
inorganic double shells
interfacial activity
oil-water separation

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title = "Facile fabrication of acid-resistant and hydrophobic Fe3O4@SiO2@C magnetic particles for valid oil-water separation application",

abstract = "It is a big challenge to prevent the degradation of magnetic nanoparticles particularly under acid conditions. Here we demonstrated that the stability of magnetic Fe3O4 nanoparticles could be substantially improved after double coating with silica and carbon. The dense silica shell and hydrophobic porous carbon shell endowed the magnetic Fe3O4@SiO2@C nanoparticles remarkable anti-corrosion performance even under 10 M of HCl solution. More importantly, the demulsification of asphaltenes-stabilized water-in-toluene emulsion was realized with the aid of 2 wt% emulsion of our proposed double-coated magnetic particles due to their great interfacial activity. Besides, the magnetic Fe3O4@SiO2@C particles could be recycled up to six times while the magnetic Fe3O4@C particles would easily lose their interfacial activity. It is the first time to found that the inorganic shells showed a great interfacial activity. Thus, the high separation efficiency, excellent acid-anticorrosion, and easy recyclability of our proposed magnetic particles presented its great potential value in industrial application.",

keywords = "Magnetic core, acid-resistance, inorganic double shells, interfacial activity, oil-water separation",

author = "Hanjie Xie and Zhiliang Wu and Zhenyu Wang and Jiming Lu and Yingzhi Li and Yulin Cao and Hua Cheng",

note = "Publisher Copyright: {\textcopyright} 2020 Elsevier B.V.",

year = "2020",

month = dec,

doi = "10.1016/j.surfin.2020.100651",

language = "英语",

volume = "21",

journal = "Surfaces and Interfaces",

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TY - JOUR

T1 - Facile fabrication of acid-resistant and hydrophobic Fe3O4@SiO2@C magnetic particles for valid oil-water separation application

AU - Xie, Hanjie

AU - Wu, Zhiliang

AU - Wang, Zhenyu

AU - Lu, Jiming

AU - Li, Yingzhi

AU - Cao, Yulin

AU - Cheng, Hua

PY - 2020/12

Y1 - 2020/12

N2 - It is a big challenge to prevent the degradation of magnetic nanoparticles particularly under acid conditions. Here we demonstrated that the stability of magnetic Fe3O4 nanoparticles could be substantially improved after double coating with silica and carbon. The dense silica shell and hydrophobic porous carbon shell endowed the magnetic Fe3O4@SiO2@C nanoparticles remarkable anti-corrosion performance even under 10 M of HCl solution. More importantly, the demulsification of asphaltenes-stabilized water-in-toluene emulsion was realized with the aid of 2 wt% emulsion of our proposed double-coated magnetic particles due to their great interfacial activity. Besides, the magnetic Fe3O4@SiO2@C particles could be recycled up to six times while the magnetic Fe3O4@C particles would easily lose their interfacial activity. It is the first time to found that the inorganic shells showed a great interfacial activity. Thus, the high separation efficiency, excellent acid-anticorrosion, and easy recyclability of our proposed magnetic particles presented its great potential value in industrial application.

AB - It is a big challenge to prevent the degradation of magnetic nanoparticles particularly under acid conditions. Here we demonstrated that the stability of magnetic Fe3O4 nanoparticles could be substantially improved after double coating with silica and carbon. The dense silica shell and hydrophobic porous carbon shell endowed the magnetic Fe3O4@SiO2@C nanoparticles remarkable anti-corrosion performance even under 10 M of HCl solution. More importantly, the demulsification of asphaltenes-stabilized water-in-toluene emulsion was realized with the aid of 2 wt% emulsion of our proposed double-coated magnetic particles due to their great interfacial activity. Besides, the magnetic Fe3O4@SiO2@C particles could be recycled up to six times while the magnetic Fe3O4@C particles would easily lose their interfacial activity. It is the first time to found that the inorganic shells showed a great interfacial activity. Thus, the high separation efficiency, excellent acid-anticorrosion, and easy recyclability of our proposed magnetic particles presented its great potential value in industrial application.

KW - Magnetic core

KW - acid-resistance

KW - inorganic double shells

KW - interfacial activity

KW - oil-water separation

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DO - 10.1016/j.surfin.2020.100651

M3 - 文章

AN - SCOPUS:85094610302

SN - 2468-0230

VL - 21

JO - Surfaces and Interfaces

JF - Surfaces and Interfaces

M1 - 100651

ER -

Facile fabrication of acid-resistant and hydrophobic Fe₃O₄@SiO₂@C magnetic particles for valid oil-water separation application

Abstract

Keywords

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