<?xml version='1.0' encoding='utf-8'?>
<oai_dc:dc xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:oai_dc="http://www.openarchives.org/OAI/2.0/oai_dc/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd">
  <dc:contributor>Steven N. Towle</dc:contributor>
  <dc:contributor>Gordon E. Brown Jr.</dc:contributor>
  <dc:contributor>George A. Parks</dc:contributor>
  <dc:creator>John R. Bargar</dc:creator>
  <dc:date>1996</dc:date>
  <dc:description>&lt;p&gt;Solvated Pb(II) ions were found to adsorb as structurally well-defined outer-sphere complexes at specific sites on the &amp;alpha;-Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; (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 &amp;Aring;. In contrast, Pb(II) adsorbs as more strongly bound inner-sphere complexes on &amp;alpha;-Al&lt;sub&gt;2&lt;/sub&gt;O&lt;sub&gt;3&lt;/sub&gt; (1&lt;span id="mmlsi1" class="mathmlsrc"&gt;&lt;img class="imgLazyJSB inlineImage" title="" src="http://ars.els-cdn.com/content/image/1-s2.0-0016703796002220-si1.gif" alt="" width="11" height="14" data-loaded="true" data-inlimgeid="1-s2.0-0016703796002220-si1.gif" /&gt;&lt;/span&gt;02). 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.&lt;/p&gt;</dc:description>
  <dc:format>application/pdf</dc:format>
  <dc:identifier>10.1016/0016-7037(96)00222-0</dc:identifier>
  <dc:language>en</dc:language>
  <dc:publisher>Elsevier</dc:publisher>
  <dc:title>Outer-sphere Pb(II) adsorbed at specific surface sites on single crystal α-alumina</dc:title>
  <dc:type>article</dc:type>
</oai_dc:dc>