ANP  Vol.2 No.4 , November 2013
The Structure of Modified Fe-Ni Bioxide Composite Nanoparticles Using Fe(NO3)3

Composite nanoparticles containing a γ-Fe2O3 core, Ni2O3 external shell and FeCl3·6H2O outermost layer can be synthesized by chemically induced transition in FeCl2 solution. These may be modified by treatment with Fe(NO3)3 to obtain particles for the preparation of ionic ferrofluids. Vibrating sample magnetometer (VSM) measurements and transmission electron microscopy (TEM) observations show that after Fe(NO3)3 treatment, the specific magnetization becomes weaker and the size becomes larger for treated particles compared with the untreated particles. Using energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), the structure of the particles before and after the treatment is revealed. The experimental results show that the γ-Fe2O3 core is unchanged, the Ni2O3 is dissolved partially and the FeCl3·6H2O is replaced by Fe(NO3)3·9H2O. The percentages of molar, mass and volume of these phases are deduced, and the average density of the modified particles is also estimated.

Cite this paper
Lin, Y. , Li, J. , Lin, L. , Liu, X. , Chen, L. and Li, D. (2013) The Structure of Modified Fe-Ni Bioxide Composite Nanoparticles Using Fe(NO3)3. Advances in Nanoparticles, 2, 294-300. doi: 10.4236/anp.2013.24040.
[1]   J. Nogués, J. Sort, V. Langlais, V. Skumryev, S. Surinach, J. S. Munoz, et al., “Exchange Bias in Nanostructures,” Physics Reports-Review Section of Physics Letters, Vol. 422, No. 3, 2005, pp. 65-117.

[2]   M. Knobel, W. C. Nunes, L. M. Socolovsky, E. De Biasi, J. M. Vargas and J. C. Denardin, “Superparamagnetism and Other Magnetic Features in Granular Materials: A Review on Ideal and Real Systems,” Journal of Nanoscience and Nanotechnology, Vol. 8, No. 6, 2008, pp. 2836-2857.

[3]   D. V. Szabó and D. Vollath, “Nanocomposites from Coated Nanoparticles,” Advanced Materials, Vol. 11, No. 15, 1999, pp. 1313-1316.<1313::AID-ADMA1313>3.0.CO;2-2

[4]   Q. X. Liu, Z. H. Xu, J. A. Finch and R. Egerton, “A Novel Two-Step Silica-Coating Process for Engineering Magnetic Nanocomposites,” Chemistry of Materials, Vol. 10, No. 12, 1998, pp. 3936-3940.

[5]   R. E. Rosensweig, “Ferrohydrodynamic,” Cambrige University, Combridge, 1985.

[6]   R. Massart, “Preparation of Aqueous Magnetic Liquids in Alkaline and Acidic Media,” IEEE Transactions on Magnetics, Vol. 17, No. 2, 1981, pp. 1247-1248.

[7]   F. A. Tourinho, R. Franck and R. Massart, “Aqueous Ferrofluids Based on Manganese and Cobalt Ferrites,” Journal of Materials Science, Vol. 25, No. 7, 1990, pp. 3249-3254.

[8]   M. H. Sousa, F. A. Tourinho, J. Depeyrot, G. J. da Silva and M. C. F. Lara, “New Electric Double-Layered Magnetic Fluids Based on Copper, Nickel, and Zinc Ferrite Nanostructures,” The Journal of Physical Chemistry B, Vol. 105, No. 6, 2001, pp. 1168-1175.

[9]   J. Crangle, “The Magnetic Properties of Solids,” Edward Arnold, London, 1977.

[10]   B. Huke and M. Lücke, “Magnetic Properties of Colloidal Suspensions of Interacting Magnetic Particles,” Reports on Progress in Physics, Vol. 67, No. 10, 2004, pp. 1731-1768.

[11]   Q. M. Zhang, J. Li, Y. Q. Lin, X. D. Liu and H. Miao, “The Preparation and Characterization of Ni-Fe Bioxide Composite Nanoparticles,” Journal of Alloys and Compounds, Vol. 508, No. 2, 2010, pp. 396-399.

[12]   L. H. Lin, J. Li, J. Fu, Y. Q. Lin and X. D. Liu, “Preparation, Magnetization, and Microstructure of Ionic Ferrofluids Based on Gamma-Fe2O3/Ni2O3 Composite Nanoparticles,” Materials Chemistry and Physics, Vol. 134, No. 1, 2012, pp. 407-411.

[13]   R. Arulmurugan, G. Vaidyanathan, S. Sendhilnathan and B. Jeyadevan, “Co-Zn Ferrite Nanoparticles for Ferrofluid Preparation: Study on Magnetic Properties,” Physica BCondensed Matter, Vol. 363, No. 1-4, 2005, pp. 225-231.

[14]   C. G. Granqvist and R. A. Buhrman, “Ultrafine Metal Particles,” Journal of Applied Physics, Vol. 47, No. 5, 1976, pp. 2200-2219.

[15]   L. L. Chen, J. Li, Y. Q. Lin, X. D. Liu, L. H. Lin and D. C. Li, “Surface Modification and Characterization of γFe2O3 Nanoparticles Synthesized by Chemically-Induced Transition,” Materials Chemistry and Physics, Vol. 141, No. 2-3, 2013, pp. 828-834.

[16]   Q. M. Zhang, J. Li, H. Miao and J. Fu, “Preparation of Gamma-Fe2O3/Ni2O3/FeCl3(FeCl2) Composite Nanoparticles by Hydrothermal Process Useful for Ferrofluids,” Smart Materials Research, Vol. 2011, 2011, Article ID: 351072.

[17]   A. R. Wang, J. Li and Y. Wang, “Analysis of Fe3O4 Nanoparticles Treated with Fe(NO3)3,” Journal of Instrumental Analysis, Vol. 25, No. 6, 2006, pp. 35-38. (in Chinese)

[18]   J. Li, X. Y. Qiu, Y. Q. Lin, X. D. Liu, R. L. Gao and A. R. Wang, “A Study of Modified Fe3O4 Nanoparticles for the Synthesis of Ionic Ferrofluids,” Applied Surface Science, Vol. 256, No. 23, 2010, pp. 6977-6981.