Preparation of porous hollow silica spheres via a layer-by-layer process and the chromatographic performance

doi:10.1007/s11706-017-0366-z

Frontiers of Materials Science

2017, Vol. 11

Issue (1): 33-41 https://doi.org/10.1007/s11706-017-0366-z

本期目录

Preparation of porous hollow silica spheres via a layer-by-layer process and the chromatographic performance

Xiaobing WEI^1,²,Cairong GONG¹(

),Xujuan CHEN¹,Guoliang FAN¹,Xinhua XU¹(

)

¹. School of Materials Science and Engineering, Tianjin University, Tianjin 300350, China
². Analysis and Testing Center, Shandong University of Technology, Zibo 255000, China

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Abstract：

Hollow silica spheres possessing excellent mechanical properties were successfully prepared through a layer-by-layer process using uniform polystyrene (PS) latex fabricated by dispersion polymerization as template. The formation of hollow SiO₂ micro-spheres, structures and properties were observed in detail by zeta potential, SEM, TEM, FTIR, TGA and nitrogen sorption porosimetry. The results indicated that the hollow spheres were uniform with particle diameter of 1.6 μm and shell thickness of 150 nm. The surface area was 511 m²/g and the pore diameter was 8.36 nm. A new stationary phase for HPLC was obtained by using C₁₈-derivatized hollow SiO₂ micro-spheres as packing materials and the chromatographic properties were evaluated for the separation of some regular small molecules. The packed column showed low column pressure, high values of efficiency (up to about 43 000 plates/m) and appropriate asymmetry factors.

Key words： PS latex layer-by-layer hollow silica spheres packing materials

收稿日期: 2016-10-26 出版日期: 2017-01-22

Corresponding Author(s): Cairong GONG,Xinhua XU

引用本文:

. [J]. Frontiers of Materials Science, 2017, 11(1): 33-41.
Xiaobing WEI,Cairong GONG,Xujuan CHEN,Guoliang FAN,Xinhua XU. Preparation of porous hollow silica spheres via a layer-by-layer process and the chromatographic performance. Front. Mater. Sci., 2017, 11(1): 33-41.

链接本文:

https://academic.hep.com.cn/foms/CN/10.1007/s11706-017-0366-z
https://academic.hep.com.cn/foms/CN/Y2017/V11/I1/33

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