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

材料科学技术（英文）, 2009, 25(1): 69-72.

^1, , ^2, , ^3, , ^4,

1.National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology,Nanjing 210094, China;Department of Physics, North University of China, Talyuan 030051, China

2.National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology,Nanjing 210094, China

3.National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology,Nanjing 210094, China

4.National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology,Nanjing 210094, China

基金项目: 国家自然科学基金(50602024) the Youth Foundation of North University of China

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

Runhua Qin ^1, , Fengsheng Li ^2, , Wei Jiang ^3, , Li Liu ^4,

2.National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology,Nanjing 210094, China

3.National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology,Nanjing 210094, China

4.National Special Superfine Powder Engineering Research Center, Nanjing University of Science and Technology,Nanjing 210094, China

Keywords： Low temperature solid state reaction

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 precursorled 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.

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

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