Preparation and characterization of iron oxyhydroxide and iron oxide thin films by liquid-phase deposition

被引：89

作者：

Deki, S

Aoi, Y

Okibe, J

Yanagimoto, H

Kajinami, A

Mizuhata, M

机构：

[1] Department of Chemical Science and Engineering, Faculty of Engineering, Kobe University, Nada-ku, Kobe 657, Rokkodai-cho

[2] Department of Materials Chemistry, Faculty of Science and Technology, Ryukoku University, Seta

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1997年 / 7卷 / 09期

关键词：

D O I：

10.1039/a700628d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Iron oxyhydroxide thin films have been prepared from the aqueous solution system of FeOOH-NH4F . HF (aq.) with added boric acid by a novel liquid-phase deposition (LPD) method and is the first attempt to preparate iron oxide thin films by this method. A crystalline beta-FeOOH thin film was formed directly on the substrate upon immersion into a mixed solution of FeOOH-NH4F . HF and H3BO3. The orientation of the deposited film differed according to the concentration of H3BO3 in the solution. When the concentration of H3BO3 was >0.30 mol dm(-3), the beta-FeOOH thin film was preferentially oriented in the [211] direction. The beta-FeOOH thin film formed was transformed into alpha-Fe2O3 upon heat treatment in air how. The alpha-Fe3O3 thin films obtained were oriented in the [110] direction. The F content of the as-deposited beta-FeOOH film was ca. 15% F/Fe and was reduced to 0.19% upon heat treatment.

引用

页码：1769 / 1772

页数：4

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