Preparation of Uniform Acicular Hematite Particles by Two Steps Hydrothermal Method from Fe(OH)3 Gel

Journal of Inorganic Materials

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Preparation of Uniform Acicular Hematite Particles by Two Steps Hydrothermal Method from Fe(OH)₃ Gel

ZHAO Jian-Lu; WEI Yu⁺ JIANG Yu-Min⁺

Department of Chemistry; Shijazhuang Education College Shijiazhuang 050031 China; ⁺Department of Chemistry; Hibei Normal University Shijiazhuang 050016 China

Received:1997-12-05 Revised:1998-01-04 Published:1998-12-20 Online:1998-12-20

Abstract

Abstract: Uniform acicular hematite particles were prepared by two steps hydrothermal method from Fe(OH)₃ gel. The effect of nucleating temperature,
pH and Sn⁴⁺ ions on the morphologies of hematite particles was studied. The experiments showed that uniform acicular particles can be obtained. First
the suspension of Fe(OH)₃ aged at 50～80℃ for 2h, crystal growing agent was then added, and put into a stainless steel autoclave with
stirring at 150～170℃ for 1.5h. The key problem of the poor repeatability of experimental result was solved. The results were characterized
by TEM and XRD.

Key words: hematite, acicular particles, preparation, Fe(OH)₃

CLC Number:

ZHAO Jian-Lu,WEI Yu JIANG Yu-Min. Preparation of Uniform Acicular Hematite Particles by Two Steps Hydrothermal Method from Fe(OH)₃ Gel[J]. Journal of Inorganic Materials.

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Preparation of Uniform Acicular Hematite Particles by Two Steps Hydrothermal Method from Fe(OH)₃ Gel

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