10.1186/2228-5326-3-23

Surface modification of Fe3O4@SiO2 microsphere by silane coupling agent

Show Details XML PDF HTML
  • Fatemeh Ahangaran*1,
  • Ali Hassanzadeh2,
  • Sirous Nouri1,
  1. Department of Chemistry, Faculty of Science, Urmia University, Urmia, IR
  2. Department of Chemistry, Faculty of Science, Urmia University, Urmia, IR Nanotechnology Research Center of Urmia University, Urmia, IR
Cover Image

Published in Issue 2013-04-15

How to Cite

Ahangaran, F., Hassanzadeh, A., & Nouri, S. (2013). Surface modification of Fe3O4@SiO2 microsphere by silane coupling agent. International Nano Letters, 3(1 (December 2013). https://doi.org/10.1186/2228-5326-3-23
Crossref
Scopus
Google Scholar
Europe PMC

PDF views: 315

HTML views: 117

Abstract

Abstract In the present study, Fe 3 O 4 @SiO 2 core–shell microspheres were prepared via two steps. First, Fe 3 O 4 nanoparticles were synthesized by co-precipitation of Fe +3 and Fe +2 as reaction substrates and NaOH as precipitant. Second, the surface of Fe 3 O 4 was coated with silica by hydrolysis of tetraethylorthosilicate as the silica source. Subsequently, in order to reduce the amount of interaction and the agglomeration of Fe 3 O 4 @SiO 2 microspheres, the silica shell of these particles was modified by vinyltriethoxysilane as the silane coupling agent. The structural properties of the samples were characterized by X-ray diffraction, scanning electron microscopy, transmission electron microscopy, and Fourier transform infrared spectroscopy analyses. The results indicated that the average sizes of Fe 3 O 4 and Fe 3 O 4 @SiO 2 particles were about 50 and 500 nm, respectively. Also, the surface characterization of Fe 3 O 4 @SiO 2 microspheres showed that the silane coupling agent was covalently coupled with the silica surface.
PDF HTML

References

  1. Chan et al. (2004) Incorporation of luminescent nanocrystals into monodisperse core-shell silica microspheres (pp. 2092-2097) https://doi.org/10.1002/adma.200400237
  2. Deng et al. (2003) A novel approach for preparation of thermal responsive polymer magnetic microsphere with core–shell structure (pp. 1729-1732) https://doi.org/10.1002/adma.200305459
  3. Salgueiriño-Maceira et al. (2006) Composite silica spheres with magnetic and luminescent functionalities (pp. 509-514)
  4. Lu et al. (2002) Modifying the surface properties of superparamagnetic iron oxide nanoparticles through a sol–gel approach (pp. 183-186) https://doi.org/10.1021/nl015681q
  5. Deng et al. (2005) Investigation of formation of silica-coated magnetite nanoparticles via sol–gel approach (pp. 87-93) https://doi.org/10.1016/j.colsurfa.2005.04.009
  6. Zhang and Wang (2008) Fabrication of one-dimensional iron oxide/silica nanostructures with high magnetic sensitivity by dipole-directed self-assembly (pp. 15151-15156) https://doi.org/10.1021/jp804452r
  7. Yang et al. (2009) Controlled synthesis of magnetite-silica nanocomposites via a seeded sol-gel approach (pp. 7646-7651) https://doi.org/10.1021/jp900868d
  8. Xu et al. (2006) Synthesis of magnetic microspheres with immobilized metal ions for enrichment and direct determination of phosphopeptides by matrix-assisted laser desorption ionization mass spectrometry (pp. 3289-3293) https://doi.org/10.1002/adma.200601546
  9. Deng et al. (2008) Superparamagnetic high-magnetization microspheres with an Fe3O4@SiO2 core and perpendicularly aligned mesoporous SiO2 shell for removal of microcystins (pp. 28-29) https://doi.org/10.1021/ja0777584
  10. Levy et al. (2002) Synthesis and characterization of multifunctional nanoclinics for biological applications (pp. 3715-3721) https://doi.org/10.1021/cm0203013
  11. Ge et al. (2008) Core-satellite nanocomposite catalysts protected by a porous silica shell: controllable reactivity, high stability, and magnetic recyclability (pp. 8924-8928) https://doi.org/10.1002/anie.200803968
  12. Sun et al. (2004) Synthesis of nanometer-size maghemite particles from magnetite (pp. 15-19) https://doi.org/10.1016/j.colsurfa.2004.05.009
  13. Cornell and Schertmann (1991) Weinheim
  14. Chen et al. (2005) One-step wet chemistry for preparation of magnetite nanorods (pp. 985-988) https://doi.org/10.1016/j.matlet.2004.11.043
  15. Kim et al. (2005) Development of surface coating technology of TiO2 powder and improvement of photocatalytic activity by surface modification (pp. 171-177) https://doi.org/10.1016/j.tsf.2004.07.021
  16. Ma (2007) Heterogeneous nucleation on potent spherical substrates during solidification (pp. 943-953) https://doi.org/10.1016/j.actamat.2006.09.016
  17. Wang et al. (2010) Amino-functionalized Fe3O4@SiO2 core-shell magnetic nanomaterial as a novel adsorbent for aqueous heavy metals removal (pp. 293-299) https://doi.org/10.1016/j.jcis.2010.05.010
  18. Ji et al. (2010) Catalytic activity of core-shell structured Cu/Fe3O4@SiO2 microsphere catalysts (pp. 305-309) https://doi.org/10.1016/j.cattod.2010.03.074
  19. Huang et al. (2011) Synthesis of polyaniline-modified Fe3O4/SiO2/TiO2 composite microsphere and photocatalytic application (pp. 2887-2890) https://doi.org/10.1016/j.matlet.2011.06.005
  20. Kim et al. (2006) Magnetic fluorescent delivery vehicle using uniform mesoporous silica spheres embedded with monodisperse magnetic and semiconductor nanocrystals (pp. 688-689) https://doi.org/10.1021/ja0565875
  21. Hussain et al. (2006) Review article: polymer-matrix nanocomposites, processing, manufacturing, and application 40(17) (pp. 1511-1575) https://doi.org/10.1177/0021998306067321
  22. Schadler et al. (1997) Microstructure and mechanical properties of thermally sprayed silica/nylon nanocomposites 6(4) https://doi.org/10.1007/s11666-997-0034-4