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Iron oxide and oxyhydroxides thin films obtained by electrodeposition

Lourdes Martinez Dietmar Leinen Francisco Martín Mercedes Gabás Enrique Quagliata Enrique Dalchiele Jose R. Ramos-Barrado 1

1. Universidad de Malaga (UMA), Campus Teatinos, Malaga E29071, Spain


Iron oxides-oxyhydroxides are abundant materials in nature, and play a relevant role in many scientific and technical applications, participating in a number of environmentally and industrially important processes.

There are 15 iron oxides, oxyhydroxides, and hydroxides known to date. They show a variety of physical and chemical properties depending on their chemical composition and crystal structure. Among the more important ones, we have magnetite (Fe3O4), goethite (FeOOH), and lepidocrocite (a-FeOOH).

Different iron oxides and iron oxyhydroxides thin films were obtained by potentiostatic electrodeposition on a titanium foil substrate, from an aqueous solution 0.01M. FeSO4(NH4)2SO4·6H2O + 0.04 M CH3COOK and pH 6.0. Changes in the deposition potential allow to obtain different crystalline pure phases of the iron oxide-oxyhydroxides as magnetite, goethite, and lepidocrocite thin films with different structural and morphological characteristics. The films were characterized by XPS, XRD, SEM and TEM.


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Presentation: Poster at E-MRS Fall Meeting 2007, Symposium B, by Jose R. Ramos-Barrado
See On-line Journal of E-MRS Fall Meeting 2007

Submitted: 2007-05-14 14:45
Revised:   2009-06-07 00:44