OUTER-SPHERE PB(II) ADSORBED AT SPECIFIC SURFACE SITES ON SINGLE CRYSTAL α-ALUMINA

dc.contributor.author	Bargar J.R.
dc.contributor.author	Towle S.N.
dc.contributor.author	Brown G.E.
dc.contributor.author	Parks G.A.
dc.date.accessioned	2020-11-22T04:13:19Z
dc.date.available	2020-11-22T04:13:19Z
dc.date.issued	1996
dc.identifier	https://elibrary.ru/item.asp?id=490346
dc.identifier.citation	Geochimica et Cosmochimica Acta, 1996, , 18, 3541-3547
dc.identifier.issn	0016-7037
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/19266
dc.description.abstract	Solvated Pb(II) ions were found to adsorb as structurally well-defined outer-sphere complexes at specific sites on the α-Al2O3 (0001) single crystal surface, as determined by grazing-incidence X-ray absorption fine structure (GI-XAFS) measurements. The XAFS results suggest that the distance between Pb(II) adions and the alumina surface is approximately 4.2 a. In contrast, Pb(II) adsorbs as more strongly bound inner-sphere complexes on α-Al2O3 (1102). The difference in reactivities of the two alumina surfaces has implications for modeling surface complexation reactions of contaminants in natural environments, catalysis, and compositional sector zoning of oxide crystals.
dc.title	OUTER-SPHERE PB(II) ADSORBED AT SPECIFIC SURFACE SITES ON SINGLE CRYSTAL α-ALUMINA
dc.type	Статья

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