Oxidation effects on the electrokinetic behavior of urania sols

Test by ultracentrifugation and moving boundary electrophoresis of the effects of incremental oxidation on urania sols showed that the resulting U (VI) (at least from 14 to 25% oxidation of 0.02 M sol) neither diffuses throughout the U0 2 crystallites nor forms a surface layer on them, but goes into...

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Bibliographic Details
Published in:Journal of colloid and interface science 1975-01, Vol.51 (3), p.443-448
Main Authors: Mcbride, J.P, Morse, L.E, Talley, J.F, Coleman, C.F
Format: Article
Language:English
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Summary:Test by ultracentrifugation and moving boundary electrophoresis of the effects of incremental oxidation on urania sols showed that the resulting U (VI) (at least from 14 to 25% oxidation of 0.02 M sol) neither diffuses throughout the U0 2 crystallites nor forms a surface layer on them, but goes into the aqueous solution. Changes in ionic strength, due mainly to changing U(VI) concentration in solution produced either by the oxidation of U(IV) or by addition of U(VI), were calculated and found to correlate well with the zeta potentials determined from the electrophoretic mobilities of the colloid particles. Comparisons with a theoretical model of colloid particle interaction showed that the range of zeta potentials is consistent with the observed effects on viscosity and stability of the sols.
ISSN:0021-9797
1095-7103
DOI:10.1016/0021-9797(75)90141-1