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