Incorporation of Hydroxypyridinone (HOPO) Ligands into Self-Assembled Monolayers on Mesoporous Supports for Selective Actinide Sequestration

Journal Article · Tue Mar 01 00:00:00 EST 2005 · Environmental Science and Technology, 39(5):1332-1337

DOI:https://doi.org/10.1021/es049169t· OSTI ID:15016188

Lin, Yuehe; Fiskum, Sandra K; Yantasee, Wassana; Wu, Hong; Mattigod, Shas V; Vorpagel, Erich R; Fryxell, Glen E; Raymond, Kenneth N; Xu, Jide

In this study, three isomers of hydroxypyridinones, 1,2-HOPO, 3,2-HOPO, and 3,4-HOPO, were attached to self-assembled monolayers on mesoporous silica. (SAMMS). The HOPO-SAMMS materials have superior solid adsorbents properties: they do not suffer from solvent swelling, their rigid, open pore structure allow rapid sorption kinetics, their extremely high surface area enables the installation of high functional density, and being silica-based they are compatible with vitrification into a final glasseous waste form. Kinetics, equilibrium, and selectivity of the adsorptions of actinide on the HOPO-SAMMS at various pHs, and in the presences of other metal cations, anions and competing ligands are reported. Rapid sequestration of U (VI), Np (V) and Pu (IV) was observed. Very little competition from transition metal cations and common species was observed.

• Research Organization: Pacific Northwest National Laboratory (PNNL), Richland, WA (US), Environmental Molecular Sciences Laboratory (EMSL)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC05-76RL01830
• OSTI ID: 15016188
• Report Number(s): PNNL-SA-41880; ESTHAG; 6899; KP1301020; TRN: US0502040
• Journal Information: Environmental Science and Technology, 39(5):1332-1337, Vol. 39, Issue 5; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

12 MANAGEMENT OF RADIOACTIVE WASTES, AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
ACTINIDES
ADSORBENTS
ANIONS
CATIONS
FUNCTIONALS
ISOMERS
KINETICS
PORE STRUCTURE
SILICA
SOLVENTS
SORPTION
SURFACE AREA
SWELLING
TRANSITION ELEMENTS
VITRIFICATION
WASTE FORMS
hydroxypyridinones
self-assembled monolayers
HOPO-SAMMS
nanotechnology
Environmental Molecular Sciences Laboratory