Preparation of water-soluble magnetic nanoparticles with controllable silica coating

doi:10.1016/j.cjche.2017.05.017

Chin.J.Chem.Eng. ›› 2018, Vol. 26 ›› Issue (1): 213-217.DOI: 10.1016/j.cjche.2017.05.017

• Materials and Product Engineering • Previous Articles

Preparation of water-soluble magnetic nanoparticles with controllable silica coating

Yaping Zhang^1,2, Bin Zhen^2,3, Hansheng Li², Yaqing Feng¹

1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2 School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China;
3 College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China

Received:2017-03-07 Revised:2017-05-28 Online:2018-03-01 Published:2018-01-28
Contact: Yaping Zhang,E-mail address:zhypin126@126.com
Supported by:
Supported by the National Natural Science Foundation of China (20976013).

Preparation of water-soluble magnetic nanoparticles with controllable silica coating

Yaping Zhang^1,2, Bin Zhen^2,3, Hansheng Li², Yaqing Feng¹

1 School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China;
2 School of Chemical Engineering and the Environment, Beijing Institute of Technology, Beijing 100081, China;
3 College of Chemistry and Chemical Engineering, Tianjin University of Technology, Tianjin 300384, China

通讯作者: Yaping Zhang,E-mail address:zhypin126@126.com
基金资助:
Supported by the National Natural Science Foundation of China (20976013).

Abstract

Abstract: This work provides a general method for preparing monodisperse, water-soluble and paramagnetic magnetic nanoparticles which are easy to be modified. Firstly, magnetic silica with core-shell structure was prepared according to a previous work. Then, the magnetic silica was treated with alkali solution to afford magnetic nanoparticles. With the increase of calcination temperature for the preparation of magnetic silica, the crystallinity and the magnetic responsibility of magnetic silica strengthened, meanwhile, the corresponding magnetic nanoparticles kept monodisperse without any aggregation. The magnetic nanoparticles are comprised of cobalt ferrite and a silica coating. The silica coating on the cobalt ferrite facilitates the magnetic nanoparticles well-dissolved and monodisperse in water, and easily modified.

Key words: Magnetic nanoparticles, Monodispersity, Water-solubility, Surface structure

摘要： This work provides a general method for preparing monodisperse, water-soluble and paramagnetic magnetic nanoparticles which are easy to be modified. Firstly, magnetic silica with core-shell structure was prepared according to a previous work. Then, the magnetic silica was treated with alkali solution to afford magnetic nanoparticles. With the increase of calcination temperature for the preparation of magnetic silica, the crystallinity and the magnetic responsibility of magnetic silica strengthened, meanwhile, the corresponding magnetic nanoparticles kept monodisperse without any aggregation. The magnetic nanoparticles are comprised of cobalt ferrite and a silica coating. The silica coating on the cobalt ferrite facilitates the magnetic nanoparticles well-dissolved and monodisperse in water, and easily modified.

关键词: Magnetic nanoparticles, Monodispersity, Water-solubility, Surface structure

Yaping Zhang, Bin Zhen, Hansheng Li, Yaqing Feng. Preparation of water-soluble magnetic nanoparticles with controllable silica coating[J]. Chin.J.Chem.Eng., 2018, 26(1): 213-217.

Yaping Zhang, Bin Zhen, Hansheng Li, Yaqing Feng. Preparation of water-soluble magnetic nanoparticles with controllable silica coating[J]. Chinese Journal of Chemical Engineering, 2018, 26(1): 213-217.

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Preparation of water-soluble magnetic nanoparticles with controllable silica coating

Preparation of water-soluble magnetic nanoparticles with controllable silica coating

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