Issue 10, 2013

Asymmetric PSt-EA/Ni-Silicate hollow microsphere with a hierarchical porous shell

Abstract

Novel asymmetric hollow microspheres with polystyrene-ethylacrylate (PSt-EA) semi-spherical cores and porous hierarchical Ni-Silicate shells have been successfully fabricated by the combination of emulsifier-free polymerization, a modified Stöber method and an in situ hydrothermal conversion reaction. During the conversion of the PSt-EA@SiO2 core/shell microspheres to the asymmetric PSt-EA/Ni-Silicate composite, the spherical PSt-EA was melted within the hollow Ni-Silicate interior to form semi-microspheres. Upon further treating the asymmetric hollow microspheres by 500 °C calcination for 5 h, hierarchical Ni-Silicate hollow spheres were obtained. The BET area of the asymmetric hollow PSt-EA/Ni-Silicate microspheres was 58.9 m2 g−1 and the pore diameter was about 10–20 nm. The large porous nature of the products enable them be used as carriers for bio-molecules, and experiments indicated that the maximum adsorption ability of the asymmetric hollow microspheres could reach 8.2 μmol g−1 when the concentration of Cytochrome C was 200 mmol L¬1.

Graphical abstract: Asymmetric PSt-EA/Ni-Silicate hollow microsphere with a hierarchical porous shell

Supplementary files

Article information

Article type
Paper
Submitted
08 dic. 2012
Accepted
07 ene. 2013
First published
08 ene. 2013

J. Mater. Chem. B, 2013,1, 1414-1420

Asymmetric PSt-EA/Ni-Silicate hollow microsphere with a hierarchical porous shell

Y. Zhou, W. Jiang, S. Xuan, X. Gong, F. Ye, S. Wang and Q. Fang, J. Mater. Chem. B, 2013, 1, 1414 DOI: 10.1039/C2TB00508E

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements