Preparation and characterization of amino-silane modified superparamagnetic silica nanospheres
By Xianqiao Liu, Zhiya Ma, J. Xing, Huizhou Liu. 2004
510 citations recorded by the source corpus.
Magnetite nanoparticles were prepared by coprecipitation of Fe2+ and Fe3+ with NH4OH, and then, silica was coated on the surface of the magnetite nanoparticles to form well-dispersed magnetic silica nanospheres. The size of spheres was controlled by changing the ratio of SiO2 to Fe3O4. Amino-silane was covalently coupled to the surface of the magnetic silica nanospheres and activated by glutaraldehyde. The morphology and magnetic properties of magnetic silica nanospheres were examined by TEM and VSM. The nanospheres have an average size of 100-200 nm diameter and possess superparamagnetic characteristics. Powder X-ray diffraction measurements show the spinel structure for the magnetite particles coated by silica. By protein immobilization assay, it was proved that the amino-silane treated magnetic silica nanospheres could significantly improve the capacity of protein immobilization. (C) 2003 Published by Elsevier B.V.
Subfields: Biomaterials, Renewable Energy, Sustainability and the Environment, Surfaces, Coatings and Films
View Paper: https://www.semanticscholar.org/paper/324d6adc144bf8b0138424eb0265e2740b6391b1
How researchers see this paper
The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.
- S. Iconaru
- M. Motelica‐Heino
- C. Ciobanu
- C. Popa
- R. Guégan
- D. Predoi
Citations in the corpus
- Magnetite (Fe3O4) nanoparticles as adsorbents for As and Cu removal (2016, background): “Lastly, the band from 1635 cm -1 (Figure 6 A) suggested the presence of hydroxyl groups which most likely appeared on the surface of Fe3O4 nanoparticles during their synthesis (Liu et al., 2004; Schwertmann and Cornell, 2003; Yang et al., 2010).”