Morphology and surface heterogeneities in synthetic goethites

Benedicte Prelot; Frédéric Villiéras; Manuel Pelletier; Gilles Gérard; Fabien Gaboriaud; J.-J. Ehrhardt; J. Perrone; M. Fedoroff; J. Jeanjean; Grégory Lefèvre; Léo Mazérolles; Jean Louis Pastol; J.C. Rouchaud; C. Lindecker

HAL : hal-00345338, version 1

DOI : 10.1016/S0021-9797(03)00058-4

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Journal of Colloid and Interface Science 261, 2 (2003) 244-254

Morphology and surface heterogeneities in synthetic goethites

Benedicte Prelot¹, Frédéric Villiéras¹, Manuel Pelletier¹, Gilles Gérard¹, Fabien Gaboriaud², J.-J. Ehrhardt², J. Perrone², M. Fedoroff³, J. Jeanjean³, Grégory Lefèvre³, Léo Mazérolles³, Jean Louis Pastol³, J.C. Rouchaud⁴, C. Lindecker⁵

GdR PRACTIS ; GdR PARIS Collaboration(s)

(15/05/2003)

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.

1 :	LEM - Laboratoire Environnement et Minéralurgie

2 :	LCPME - Laboratoire de Chimie Physique et Microbiologie pour l'Environnement

3 :	CECM - Centre d'études de chimie métallurgique

4 :	ICMPE - Institut de Chimie et des Matériaux Paris-Est

5 :	IPNO - Institut de Physique Nucléaire d'Orsay

Domaine

Chimie/Chimie théorique et/ou physique

Planète et Univers/Interfaces continentales, environnement

Sciences de l'environnement/Milieux et Changements globaux

Mots Clés : Goethite – XRD – SEM – TEM – AFM – Gas adsorption – Morphology


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Contributeur : Bénédicte Prélot <>
Soumis le : Lundi 8 Décembre 2008, 20:42:21
Dernière modification le : Mardi 26 Mars 2013, 20:08:50