Salt-assisted Low Temperature Solid State Synthesis of High Surface Area CoFe2O4 Nanoparticles

Abstract

Abstract:

A novel salt-assisted low temperature solid state method using CoCl₂?6H₂O, FeCl₃?6H₂O and NaOH as pre- cursor and using NaCl as a dispersant to synthesize high surface area CoFe₂O₄ nanoparticles, has been investigated. The effects of the molar ratio of added salt and calcination temperature on the characteristics of the products were investigated by X-ray diffraction (XRD), transmission electron microscopy (TEM), vibrating sample magnetometer (VSM) and Brunauer, Emmett and Teller (BET) surface area analysis. Results showed that the introduction of leachable inert inorganic salt as a hard agglomeration inhibitor in the mixture precursor led to the formation of high dispersive CoFe₂O₄ nanoparticles; and the increase in specific surface area from 28.28 to 73.97 m²/g, and the saturation magnetization is 84.6 emu/g.

Key words: Low temperature solid state reaction, Salt-assisted, Cobalt ferrite, Nanoparticles

Runhua Qin,Fengsheng Li,Wei Jiang,Li Liu. Salt-assisted Low Temperature Solid State Synthesis of High Surface Area CoFe₂O₄ Nanoparticles[J]. J Mater Sci Technol, 2009, 25(01): 69-72.

References

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Salt-assisted Low Temperature Solid State Synthesis of High Surface Area CoFe₂O₄ Nanoparticles

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