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Issue
Korean Journal of Chemical Engineering,
Vol.18, No.2, 215-219, 2001
Characterization of Iron(III) Oxide Nanoparticles Prepared by Using Ammonium Acetate as Precipitating Agent
Park JY, Oh SG, Ha BH
The effect of precipitating agent on the preparation of iron(III) oxide particles was investigated. Iron(III) oxide particles were prepared by precipitation of aqueous ferric nitrate solution by using ammonium acetate and ammonium hydroxide as precipitating agents. Particle size, shape, chemical composition, crystalline formation rate, crystallinity and magnetic property were measured for Fe2O3 particles obtained by precipitating with ammonium acetate, and compared with those of particles formed by using ammonium hydroxide. TGA, DTA, IR, XRD, TEM and VSM were used to characterize the particles. The nanoparticles synthesized with ammonium acetate showed a narrow size distribution, spherical shape, fast crystalline formation rate, high crystallinity and complete hysteresis loop. The better properties of particles formed by using ammonium acetate were originated from the chelating effect of carboxylate ions and higher crystallinity than those synthesized with ammonium hydroxide.
Keywords: Iron(III) Oxide Particles; Precipitating Agents; Ammonium Acetate; Chelating Effect; Crystallinity
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[Cited By]
  1. Kim JH, Korean Journal of Chemical Engineering, 25(2), 377, 2008
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