Sorption of Cu(II) onto vineyard soils: Macroscopic and spectroscopic investigations

Boudesocque, S.; Guillon, E.; Aplincourt, M.; Marceau, Eric; Stievano, L.

Type de document :

Article dans une revue scientifique: Article original

DOI :

10.1016/j.jcis.2006.10.080

PMID :

17140594

URL permanente :

http://hdl.handle.net/20.500.12210/83768

Titre :

Sorption of Cu(II) onto vineyard soils: Macroscopic and spectroscopic investigations

Auteur(s) :

Boudesocque, S. [Auteur]
Guillon, E. [Auteur]
Aplincourt, M. [Auteur]
Marceau, Eric [Auteur]

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181
Stievano, L. [Auteur]

Titre de la revue :

J. Colloid Interface Sci.

Nom court de la revue :

J. Colloid Interface Sci.

Pagination :

40-49

Date de publication :

2007-03-01

ISSN :

0021-9797

Mot(s)-clé(s) en anglais :

XANES
EXAFS
DRX
soil
sorption
copper

Discipline(s) HAL :

Chimie

Résumé en anglais : [en]

The sorption of Cu on five vineyard soils was examined via macroscopic and spectroscopic investigations. The composition of the soils was previously determined using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy ...
Lire la suite >The sorption of Cu on five vineyard soils was examined via macroscopic and spectroscopic investigations. The composition of the soils was previously determined using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). X-ray absorption spectroscopy (XAS) was employed to determine the metal environment with regard to the identity and interaction of the nearest atomic neighbors, the bond distances, and the coordination numbers. The five soils present similar sorption properties and there is no XAS evidence that the nature of the soil samples affects the local chemical environment of Cu(II). The kinetics of the Cu sorption reactions is rapid, with the equilibrium loading of Cu on the surface achieving approximately 200 μmol g−1, i.e., 12.7 mg g−1. The XAS data indicate that Cu is adsorbed in the form of inner-sphere complexes with first shell Cusingle bondO parameters of four equatorial Cusingle bondO bonds equal to 1.93 Å and two axial Cusingle bondO bonds at 2.43 Å. This is in accordance with a Jahn–Teller distorted octahedron environment around copper. Our results provide evidence of the complexation of Cu(II) onto soil organic matter coated with an inorganic surface (quartz, clay, and goethite).Lire moins >

Langue :

Anglais

Établissement(s) :

Université de Lille
CNRS
Centrale Lille
ENSCL
Univ. Artois

Collections :

Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181

Équipe(s) de recherche :

Matériaux pour la catalyse (MATCAT)

Date de dépôt :

2023-05-30T18:24:17Z

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