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

Xie，Hanjie1; Wu，Zhiliang1; Wang，Zhenyu1; Lu，Jiming1; Li，Yingzhi1; Cao，Yulin2; Cheng，Hua1

2020-12-01

10.1016/j.surfin.2020.100651

Surfaces and Interfaces   影响因子和分区

2468-0230

It is a big challenge to prevent the degradation of magnetic nanoparticles particularly under acid conditions. Here we demonstrated that the stability of magnetic FeO nanoparticles could be substantially improved after double coating with silica and carbon. The dense silica shell and hydrophobic porous carbon shell endowed the magnetic FeO@SiO@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 FeO@SiO@C particles could be recycled up to six times while the magnetic FeO@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.

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

SCI

英语

第一 ; 通讯

Basic Research Project of the Science and Technology Innovation Commission of Shenzhen[JCYJ20170817110251498] ; Natural Science Foundation of Guangdong Province[2018A030313725] ; Leading Talents of Guangdong Province Program[2016LJ06C536] ; Guangdong Special Support for the Science and Technology Leading Young Scientist[2016TQ03C919] ; National Natural Science Foundation of China[21603094]

Chemistry ; Materials Science ; Physics

Chemistry, Physical ; Materials Science, Coatings & Films ; Physics, Applied ; Physics, Condensed Matter

WOS:000607168400002

ELSEVIER

2-s2.0-85094610302

Scopus

1.Department of Materials Science and Engineering Southern University of Science and Technology,Shenzhen,518055,China
2.Physics Laboratory,Industrial Training Center,Shenzhen Polytechnic,Shenzhen,China

Xie，Hanjie,Wu，Zhiliang,Wang，Zhenyu,et al. Facile fabrication of acid-resistant and hydrophobic Fe3O4@SiO2@C magnetic particles for valid oil-water separation application[J]. Surfaces and Interfaces,2020,21.

Xie，Hanjie.,Wu，Zhiliang.,Wang，Zhenyu.,Lu，Jiming.,Li，Yingzhi.,...&Cheng，Hua.(2020).Facile fabrication of acid-resistant and hydrophobic Fe3O4@SiO2@C magnetic particles for valid oil-water separation application.Surfaces and Interfaces,21.

Xie，Hanjie,et al."Facile fabrication of acid-resistant and hydrophobic Fe3O4@SiO2@C magnetic particles for valid oil-water separation application".Surfaces and Interfaces 21(2020).