Phys. Rev. Lett. 94, 076104 (2005) [4 pages]

Probing Outer-Sphere Adsorption of Aqueous Metal Complexes at the Oxide-Water Interface with Resonant Anomalous X-Ray Reflectivity

Abstract

References

Citing Articles (14)

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Changyong Park¹, Paul A. Fenter¹, Neil C. Sturchio^1,2, and John R. Regalbuto³
¹Environmental Research Division, Argonne National Laboratory, Argonne, Illinois 60439, USA
²Department of Earth and Environmental Sciences, University of Illinois at Chicago, Chicago, Illinois 60607, USA
³Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois 60607, USA

Received 10 September 2004; published 25 February 2005

Resonant anomalous x-ray reflectivity near the Pt L_III edge simultaneously revealed the geometric and spectroscopic structures of Pt(NH₃)₄²⁺ ions adsorbed at the quartz(100)-water interface. The derived Pt geometric subprofile shows two discrete “outer-sphere” adsorbed layers, and the interface-specific x-ray absorption edge profile exhibits a significant white-line enhancement compared to the bulk-solution species.

URL:

http://link.aps.org/doi/10.1103/PhysRevLett.94.076104

DOI:

10.1103/PhysRevLett.94.076104

PACS:

68.08.De, 61.10.Eq, 68.43.Fg, 82.65.+r

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Phys. Rev. Lett. 94, 076104 (2005) [4 pages]

Probing Outer-Sphere Adsorption of Aqueous Metal Complexes at the Oxide-Water Interface with Resonant Anomalous X-Ray Reflectivity