Effect of the polymeric coating over Fe3O4 particles used for magnetic separation

• Authors: Raúl Reza , Carlos Martínez Pérez , Claudia Rodríguez González , Humberto Romero , Perla García Casillas
• Languages of publication: EN

Abstracts

EN

In this work, the synthesis of magnetite nanoparticles by two variant chemical coprecipitation methods that involve reflux and aging conditions was investigated. The influence of the synthesis conditions on particle size, morphology, magnetic properties and protein adsorption were studied. The synthesized magnetite nanoparticles showed a spherical shape with an average particle size directly influenced by the synthesis technique. Particles of average size 27 nm and 200 nm were obtained. When the coprecipitation method was used without reflux and aging, the smallest particles were obtained. Magnetite nanoparticles obtained from both methods exhibited a superparamagnetic behavior and their saturation magnetization was particle size dependent. Values of 67 and 78 emu g−1 were obtained for the 27 nm and 200 nm magnetite particles, respectively. The nanoparticles were coated with silica, aminosilane, and silica-aminosilane shell. The influence of the coating on protein absorption was studied using Bovine Serum Albumin (BSA) protein. [...]

Keywords

EN

Chemical coprecipitation; Magnetic separation; Biofunctional nanoparticles; Bovine serum albumin (BSA); Protein adsorption

• Publisher: De Gruyter Open
• Journal: Open Chemistry
• Year: 2010
• Volume: 8
• Issue: 5
• Pages: 1041-1046

Dates

published

1 - 10 - 2010

online

5 - 9 - 2010

Contributors

author

Raúl Reza

• Institute of Engineering and Technology, Autonomous University of Juarez City, C.P. 32320, Juarez City, Mexico

author

Carlos Martínez Pérez

• Institute of Engineering and Technology, Autonomous University of Juarez City, C.P. 32320, Juarez City, Mexico

author

Claudia Rodríguez González

• Institute of Engineering and Technology, Autonomous University of Juarez City, C.P. 32320, Juarez City, Mexico

author

Humberto Romero

• Autonomous University of Chihuahua, C.P. 3100, Chihuahua, Mexico

author

Perla García Casillas

• Institute of Engineering and Technology, Autonomous University of Juarez City, C.P. 32320, Juarez City, Mexico

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Identifiers

DOI

10.2478/s11532-010-0073-4