Hydrotalcite Colloidal Stability and Interactions with Uranium(VI) at Neutral to Alkaline pH
Chris Foster, Samuel Shaw, Thomas S. Neill, Nick Bryan, Nick Sherriff, Louise S. Natrajan, Hannah Wilson, Laura Lopez-Odriozola, Bruce Rigby, Sarah J. Haigh, Yichao Zou, R. W. Harrison, Katherine Morris
Abstract
). Both X-ray absorption spectroscopy (XAS) and luminescence analysis confirmed that these negatively charged species sorbed as both outer- and inner-sphere tertiary complexes on the hydrotalcite surface. These results demonstrate that hydrotalcite can form pseudo-colloids with U(VI) under a wide range of pH conditions and have clear implications for understanding the uranium behavior in environments where hydrotalcite and other LDHs may be present.
Topics & Concepts
HydrotalciteColloidLeaching (pedology)ChemistryHydroxideUraniumSorptionCarbonateInorganic chemistryActinideNuclear chemistryMetallurgyAdsorptionMaterials scienceGeologyCatalysisOrganic chemistrySoil scienceSoil waterRadioactive element chemistry and processingLayered Double Hydroxides Synthesis and ApplicationsGeochemistry and Elemental Analysis