Fabrication of SiO2-Coated Magnetic Nanoparticles for Applications to Protein Separation and Purification

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Coating of -Fe2O3 nanoparticles with SiO2 layer by wet chemical synthesis and its applications to protein separation and purification were investigated. The average particle size of -Fe2O3 core was 20 nm and SiO2 layer thickness was 5 nm. The band of OH- radicals on SiO2 layer was detected between 3600 and 3200 cm-1 in wave numbers, which showed that the surface property of coated nanoparticles was similar to that of conventional fumed silica. Finally, the feasibility of -Fe2O3/SiO2 nanoparticles for magnetic separation media in various bio processes was discussed in terms of structural and functional properties such as pore structure and magnetic properties.

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Periodical:

Materials Science Forum (Volumes 449-452)

Edited by:

S.-G. Kang and T. Kobayashi

Pages:

1033-1036

Citation:

S.H. Yun et al., "Fabrication of SiO2-Coated Magnetic Nanoparticles for Applications to Protein Separation and Purification", Materials Science Forum, Vols. 449-452, pp. 1033-1036, 2004

Online since:

March 2004

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$38.00

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