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X-Ray Absorption and EPR Spectroscopic Characterization of Adsorbed Copper(II) Complexes at the Boehmite (AlOOH) Surface by Forrest J. Weesner; William F. Bleam is a Chemistry article available to read on EtoBox.

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hand, ions that are bound to a surface while retaining their The chemical environment of Cu(II) adsorbed to the boehmite hydration shell are outer-sphere. There has been great inter-(AlOOH) surface at pH 6.5 is examined by electron paramagnetic est in developing modeling approaches to indirectly deterresonance and X-ray absorption spectroscopy. Adsorbed Cu(II) mine the nature and stability of these surface complexes (2). ## is always coordinated by four oxygens in an axially symmetric The use of surface spectroscopy to directly examine surligand field when adsorbed under our experimental conditions. face complexes is an excellent complement to modeling. The Cu-O bond distance is approximately 1.94 A ̊. An oriented, Surface complex models are difficult to constrain, particuinner-sphere Cu(II) surface complex is observed at low surface loading (õ0.2 mmol/M 2 ). A second population of Cu(OH) N larly as the complexity of the system increases beyond a outer-sphere complexes is proposed at higher surface single adsorbate or when new surface phases form concurloadings to explain X-ray absorption fine structure results. Cu(II) rent with or following adsorption. For a model to have the str

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Author

Forrest J. Weesner; William F. Bleam

Publisher

Elsevier Science; Elsevier ; Elsevier Inc.; Elsevier BV (ISSN 0021-9797)

Published

1997

Language

EN

Field

Chemistry (Physical Sciences)