In situ Fourier-Transform infrared spectroscopy studies of inorganic ions adsorption on metal oxides and hydroxides - Ecole Nationale du Génie de l'Eau et de l'Environnement de Strasbourg Accéder directement au contenu
Pré-Publication, Document De Travail Année : 2003

In situ Fourier-Transform infrared spectroscopy studies of inorganic ions adsorption on metal oxides and hydroxides

Résumé

In this work, the studies describing the use of attenuated total reflection ? infrared spectroscopy to obtain information on the sorption mechanism of inorganic ions on metal oxy-hydroxides are reviewed. ATR-IR is amongst the rare techniques which allow to analyze the sorption phenomena in situ and led to several results about the speciation of sorbed anions (sulfate, carbonate, phosphate, perchlorate, ...) or ternary inorganic complexes since it is able to distinguish outer-sphere and inner-sphere complexes. The principles of this method are summarized, and the experimental protocols, the results and the limitations are detailed. The sample deposition method, initially based a paste or a concentrated suspension, have evolved towards the coating of the ATR crystal by a colloid layer, increasing the sensibility and the reproducibility of the measurements. Observed absorption frequencies of ions sorbed on metal oxy-hydroxides (goethite, hematite, alumina, silica, TiO2, ...) are reported to help the identification of peaks in new experimental works. This method, characterized by an in situ analysis performed with a special cell used in a widespread instrumentation (IR spectrometer), is very recent but its advantages suitable for the current problems in the sorption field should help its rapid development for the next years.

Domaines

Matériaux
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Dates et versions

hal-00000940 , version 1 (11-12-2003)

Identifiants

  • HAL Id : hal-00000940 , version 1

Citer

Grégory Lefèvre. In situ Fourier-Transform infrared spectroscopy studies of inorganic ions adsorption on metal oxides and hydroxides. 2003. ⟨hal-00000940⟩
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