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Journal of Nanomaterials
Volume 2016 (2016), Article ID 1730403, 9 pages
Research Article

Facile Method for Preparation of Silica Coated Monodisperse Superparamagnetic Microspheres

1Department of Bioscience and Biotechnology, Konkuk University, Seoul 143-701, Republic of Korea
2School of Chemical and Biological Engineering, Seoul National University, Seoul 151-747, Republic of Korea
3Department of Genetic Engineering, College of Biotechnology and Bioengineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea

Received 15 October 2015; Revised 28 December 2015; Accepted 10 January 2016

Academic Editor: Zhisong Lu

Copyright © 2016 Xuan-Hung Pham et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Supplementary Material

After modified with magnetic nanoparticles, magnetic sulfonated PS-DVB beads (100 mg) was modified with APTES solution (1% (v/v), 100 mL). Thereafter, ammonium hydroxide (28%, 2 mL) was added to the bead dispersion and was shaken for 20 min at room temperature. To the dispersion TEOS (2 mL) was added and vigorously shaken for 12 h at room temperature. The silica coated magnetic beads were collected by magnet and washed with ethanol five times and redispersed in to absolute ethanol to obtained 1 mg/ml silica coated silica coated magnetic beads. The magnetic ability of silica coated magnetic beads under magnetic field was seen in Figure S1.

  1. Supplementary Material