title: Morphology and surface heterogeneities in synthetic goethites.
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.
authors.affiliation: Laboratoire Environnement et Minéralurgie, UMR 7569 CNRS/INPL, BP40, 54501 Vandoeuvre-lès-Nancy Cedex, France.
authors.forename: Bénédicte
authors.initials: B
authors.lastname: Prélot
authors.forename: Frédéric
authors.initials: F
authors.lastname: Villiéras
authors.forename: Manuel
authors.initials: M
authors.lastname: Pelletier
authors.forename: Gilles
authors.initials: G
authors.lastname: Gérard
authors.forename: Fabien
authors.initials: F
authors.lastname: Gaboriaud
authors.forename: Jean-Jacques
authors.initials: JJ
authors.lastname: Ehrhardt
authors.forename: Jane
authors.initials: J
authors.lastname: Perrone
authors.forename: Michel
authors.initials: M
authors.lastname: Fedoroff
authors.forename: Jeanine
authors.initials: J
authors.lastname: Jeanjean
authors.forename: Gregory
authors.initials: G
authors.lastname: Lefèvre
authors.forename: Léo
authors.initials: L
authors.lastname: Mazerolles
authors.forename: Jean-Louis
authors.initials: JL
authors.lastname: Pastol
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Rouchaud
authors.forename: Catherine
authors.initials: C
authors.lastname: Lindecker