Skip to main content Accessibility help

Catalytic synthesis and characterization of spindle-type α–Fe2O3 particles

  • Xiuli Zhang (a1), Hui Liu (a1) and Yu Wei (a1)


Catalytic synthesis of spindle-type hematite particles was studied for the first time under the conditions of boiling reflux and pH values ranging from 4 to 7, using Fe2(SO4)3 and NaOH as raw material, a trace amount of FeSO4 as the catalyst, and NaH2PO4 as the growth-regulating agent. The final products were characterized by x-ray diffraction, high-resolution electron microscopy, scanning electron microscopy, and Fourier transform infrared techniques. Primarily, the catalytic effect of ferrous ion on the conversion of ferric hydroxide was investigated. It was found that the addition of a trace amount of ferrous ion promoted fast conversion of ferric hydroxide and remarkably accelerated the transformation process to hematite. The reaction conditions affecting the conversion rate and morphologies in the presence of trace amount of ferrous ion were investigated. The final particles prepared had the characteristics of controlled size, a narrow particle size distribution, and good reproducibility.


Corresponding author

a)Address all correspondence to this author. e-mail:


Hide All
1.Diamandescu, L., Mihaila-Tarabasanu, D., Popescu-Pogrion, N., Totovina, A. and Bibicu, I.: Hydrothermal synthesis and characterization of some polycrystalline α-iron oxides. Ceram. Int. 25, 689 (1999).
2.Itoh, H. and Sugimoto, T.: Systematic control of size, shape, structure and magnetic properties of uniform magnetite and maghemite particles. J. Colloid Interface Sci. 265, 283 (2003).
3.Matijević, E. and Scheiner, P.: Ferric hydrous oxide sols. J. Colloid Interface Sci. 63, 509 (1978).
4.Bailey, J.K., Brinker, C.J. and Mecartney, M.L.: Growth mechanisms of iron oxide particles of differing morphologies from the forced hydrolysis of ferric chloride solution. J. Colloid Interface Sci. 157, 1 (1993).
5.Sugimoto, T., Maramatsu, A., Sakata, K. and Shindo, D.: Characterization of hematite particles of different shapes. J. Colloid Interface Sci. 158, 420 (1993).
6.Ocaña, M., Morales, M.P. and Serna, C.J.: The growth mechanism of α–Fe2O3 ellipsoidal particles in solution. J. Colloid Interface Sci. 171, 85 (1995).
7.Sugimoto, T. and Maramatsu, A.: Formation mechanism of monodispersed α–Fe2O3 particles in dilute FeCl3 solution. J. Colloid Interface Sci. 184, 626 (1996).
8.Matsumoto, S., Koga, T., and Fukai, K.: Production of acicular ferric oxide. U.S. Patent. No. 4202871 (13 May 1980).
9.Wei, Y. and Liu, H.: Preparation of nano-needle hematite particles in solution. Mater. Res. Bull. 34, 1227 (1999).
10.Chen, D-H., Jiao, X-L. and Chen, D-R.: Solvothermal Synthesis of α–Fe2O3 particles with different morphologies. Mater. Res. Bull. 36, 1057 (2001).
11.Sugimoto, T., Wang, Y., Itoh, H. and Muramatsu, A.: Systematic control of size, shape and internal structure of monodisperse α–Fe2O3 particles. J. Colloid Interface Sci. 134, 265 (1998).
12.Itoh, H. and Sugimoto, T.: Synthesis of monodispersed magnetic particles by the gel-sol method and their magnetic properties. Stud. Surf. Sci. Catal. 132, 251 (2001).
13.Li, Q-L. and Wei, Y.: Study on preparing monodispersed hematite nanoparticles by microwave-induced hydrolysis of ferric salts solution. Mater. Res. Bull. 33, 779 (1998).
14.Wang, G-H., Whittaker, G., Harrison, A. and Song, L-J.: Preparation and mechanism of formation of acicular goethite-magnetite particles by decomposition of ferric and ferrous salts in aqueous solution using microwave radiation. Mater. Res. Bull. 33, 1571 (1998).
15.He, Q-H., Leppard, G.G., Prige, C.R. and Snodgrass, W.J.: Transmission electron microscopy of a phosphate effect on the colloid structure of iron hydroxide. Water Res. 30, 1345 (1996).
16.Goldberg, S. and Sposito, G.: On the mechanism of specific phosphate adsorption by hydroxylated mineral surfaces: A review. Commun. Soil Sci. Plant Anal. 16, 801 (1985).
17.Wei, Y., Zhao, J-L. and Han, X-Y.: Preparation of uniform hematite particles by catalytic phase transformation from high concentrated ferric chloride solution. Chin. J. Catal. 19, 7 (1998).
18.Liu, H., Wei, Y., Zhang, Y-F. and Jia, Z-B.: Preparation of nanometer-sized ferrite. J. Inorg. Mater. 17, 57 (2002).
19.Liu, H., Wei, Y. and Sun, Y-H.: The formation of hematite from ferrihydrite using Fe(II) as a catalyst. J. Mol. Catal. A: Chem. 226, 135 (2005).
20.Liu, H., Wei, Y., Sun, Y-H. and Wei, W.: Dependence of the mechanism of phase transformation of Fe(III) hydroxide on pH. Colloids Surf. 252, 201 (2005).
21.Sugimoto, T., Khan, M.M., Muramatsu, A. and Itoh, H.: Formation mechanism of monodisperse peanut-type α–Fe2O3 particles from condensed ferric hydroxide gel. Colloids Surf. 79, 233 (1993).
22.Suter, D., Siffert, C., Sulzberger, B. and Stumm, W.: Catalytic conversion of iron(III) (hydr)oxides by oxalic acid in the presence of Fe(II). Naturwissenschaften 75, 571 (1988).
23.Suter, D., Banwart, S. and Stumm, W.: Conversion of hydrous iron(III) oxide by reductive mechanisms. Langmuir 7, 809 (1991).
24.Ballesteros, M.C., Rueda, E.H. and Blesa, M.A.: The influence of iron(II) and (III) on the kinetics of goethite conversion by EDTA. J. Colloid Interface Sci. 201, 13 (1998).
25.Sugimoto, T. and Wang, Y.: Mechanism of the shape and structure control of monodispersed α–Fe2O3 particles by sulfate ion. J. Colloid Interface Sci. 207, 137 (1998).
26.Barton, T.F., Price, T., Becker, K. and Dillard, J.G.: The effects of dicarboxylic acids on the crystal growth of α–FeOOH in aqueous media. Colloids Surf. 53, 209 (1991).



Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed