𝔖 Bobbio Scriptorium
✦   LIBER   ✦

XAFS study of Co(II) sorption at the α-Al2O3-water interface

✍ Scribed by S.N. Towle; J.A. Bargar; P. Persson; G.E. Brown Jr.; G.A. Parks

Publisher
Elsevier Science
Year
1995
Tongue
English
Weight
139 KB
Volume
208-209
Category
Article
ISSN
0921-4526

No coin nor oath required. For personal study only.

✦ Synopsis

Aqueous Co(II) sorption onto 0t-Al20 3 at pH 8.1 and surface concentrations (F) of 0.16 to 11.3 ~t mol m-2 has been studied by XAFS spectroscopy. At low F, Co adsorbs in a monodentate fashion or in a bridging bidentate fashion and is present as small oligomers. A Co(OH)2-1ike phase forms at high F.

📜 SIMILAR VOLUMES

XAFS study of Pb (II) sorption at the α-
XAFS study of Pb (II) sorption at the α-Al2O3-water interface
✍ J.R. Bargar; G.E. Brown Jr.; G.A. Parks 📂 Article 📅 1995 🏛 Elsevier Science 🌐 English ⚖ 137 KB

XAFS spectra of Pb(II) adsorbed at the a-A1203-water interface were collected over a range of pH, total Pb concentration, and sorption density (F) in 0.1 M NaNO3. One sample prepared in 0.1 M NaCI was also analyzed to examine the effect of the background electrolyte. As F increases, sorbed Pb(II) po

Grazing-Incidence XAFS Study of Aqueous
Grazing-Incidence XAFS Study of Aqueous Zn(II) Sorption on α-Al2O3 Single Crystals
✍ Thomas P. Trainor; Jeffrey P. Fitts; Alexis S. Templeton; Daniel Grolimund; Gord 📂 Article 📅 2001 🏛 Elsevier Science 🌐 English ⚖ 120 KB

## Grazing -incidence XAFS spectroscopy was applied to study the sorption of Zn(II) on two crystallographically distinct surfaces of highly polished sapphire single crystals as a simplified analog for metal ion sorption on natural aluminum-(hydr)oxides. Experiments were performed both in situ (in

Pb(II) Sorption onto γ-Al2O3 Surfaces at
Pb(II) Sorption onto γ-Al2O3 Surfaces at the Oxide–Water Interface: A Novel Approach Using Planar Oxides
✍ Christine F. Conrad; Catherine J. Chisholm-Brause; Michael J. Kelley 📂 Article 📅 2002 🏛 Elsevier Science 🌐 English ⚖ 139 KB

A novel technique for examining metal-ion interactions at the solid-water interface is introduced. Planar oxides, flat, thin coatings of uniform thickness created on a metal support, have been constructed as useful analogs for investigating metal-solid interactions under a variety of conditions. XPS

Sorption of Co(II) on Metal Oxide Surfac
Sorption of Co(II) on Metal Oxide Surfaces: II. Identification of Co(II)(aq) Adsorption Sites on the (0001) and (1102) Surfaces of α-Al2O3 by Grazing-Incidence XAFS Spectroscopy
✍ Steven N Towle; John R Bargar; Gordon E Brown Jr.; George A Parks 📂 Article 📅 1999 🏛 Elsevier Science 🌐 English ⚖ 180 KB

We have characterized the adsorption of Co(II) on the (0001) and (11 02) surfaces of ␣-Al 2 O 3 single crystals under ambient conditions using polarization-dependent grazing-incidence X-ray absorption fine structure spectroscopy, in combination with bond valence modeling. Co(II) ions were found to b

XAFS and Bond-Valence Determination of t
XAFS and Bond-Valence Determination of the Structures and Compositions of Surface Functional Groups and Pb(II) and Co(II) Sorption Products on Single-Crystal α-Al2O3
✍ J.R. Bargar; S.N. Towle; G.E. Brown Jr.; G.A. Parks 📂 Article 📅 1997 🏛 Elsevier Science 🌐 English ⚖ 602 KB

adion complexes, since definition of these factors would The structures and compositions of Pb(II) adsorption complexes facilitate thermodynamic, mechanistic, and kinetic descripand surface binding sites on a-Al 2 O 3 (0001) and (11V 02) surfaces tions of surface reactions. In addition, it would be