Volume 9 Issue 1
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Zhao, J., Wang, Y., Luo, G., & Zhu, S. (2011). In situ synthesis of magnetic mesoporous silica via sol–gel process coupled with precipitation and oxidation. Particuology, 9(1), 56-62. https://doi.org/10.1016/j.partic.2010.06.005
In situ synthesis of magnetic mesoporous silica via sol–gel process coupled with precipitation and oxidation
Junqi Zhao, Yujun Wang *, Guangsheng Luo, Shenlin Zhu
The State Key Laboratory of Chemical Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084, China
10.1016/j.partic.2010.06.005
Volume 9, Issue 1, February 2011, Pages 56-62
Received 11 June 2009, Revised 22 May 2010, Accepted 7 June 2010, Available online 30 December 2010.
E-mail: wangyujun@mail.tsinghua.edu.cn

Highlights
Abstract

A novel method was proposed for the in situ synthesis of magnetite-containing mesoporous silica SBA-16 via a sol–gel process coupled with precipitation and oxidation. The effect of the added amounts of reactants on the mesostructural and magnetic properties of the magnetic mesoporous silica was investigated. It was determined that the synthesized magnetic mesoporous silica with a total pore volume of 0.64–0.96 cm3/g and an average pore diameter of 4.0–14.9 nm had a relatively high saturation magnetization value (1.11–5.77 emu/g) and a large surface area (258–747 m2/g). Lysozyme was chosen as a model protein to test the performance of the magnetic mesoporous silica as a protein adsorbent. The high adsorption capacity (up to 212 mg/g) suggested a promising future as bimolecular hosts for the magnetic mesoporous silica.

Graphical abstract
Keywords
Magnetic mesoporous silica; Mesostructural property; Magnetic property; Protein absorbent