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Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received September 26, 2000
Accepted January 15, 2001

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Characterization of Iron(III) Oxide Nanoparticles Prepared by Using Ammonium Acetate as Precipitating Agent

Ji Young Park Seong Geun Oh^† Baik Hyon Ha

Department of Chemical Engineering, Hanyang University, 17, Haengdang-dong, Seongdong-gu, Seoul, Korea

Korean Journal of Chemical Engineering, March 2001, 18(2), 215-219(5), 10.1007/BF02698462

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Abstract

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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