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Journal Articles Journal of Colloid and Interface Science Year : 2003

Morphology and surface heterogeneities in synthetic goethites

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Abstract

In the framework on a study of the acido-basic and sorption properties of iron oxides, a thorough characterization of two types of goethite powders was performed in several laboratories joined in a common project. Chemical analysis by ICPAES; high-resolution SEM, TEM, and AFM observations; XRD with line width analysis; and argon and nitrogen sorption isotherms were used for that purpose. The main crystallographic faces of goethite particles could be identified as {001}, {101}, and {121}, and their abundance correlated with the distribution of low-pressure argon adsorption local isotherms. These results will be very useful for further studies on the relationship between surface reactivity in aqueous solution and orientation of solid surfaces.

Dates and versions

hal-00345338 , version 1 (08-12-2008)

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Benedicte Prelot, Frédéric Villiéras, Manuel Pelletier, Gilles Gérard, Fabien Gaboriaud, et al.. Morphology and surface heterogeneities in synthetic goethites. Journal of Colloid and Interface Science, 2003, 261 (2), pp.244-254. ⟨10.1016/S0021-9797(03)00058-4⟩. ⟨hal-00345338⟩
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