Incorporation of hydroxypyridinone ligands into self-assembled monolayers on mesoporous supports for selective actinide sequestration

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

Research output: Contribution to journalArticle

72 Citations (Scopus)

Abstract

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 allows 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 vitreous waste form. Kinetics, equilibrium, and selectivity of the adsorptions of actinide on the HOPO-SAMMS at various pH values and in the presence 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.

Original languageEnglish (US)
Pages (from-to)1332-1337
Number of pages6
JournalEnvironmental Science and Technology
Volume39
Issue number5
DOIs
StatePublished - Mar 1 2005
Externally publishedYes

Fingerprint

Actinoid Series Elements
actinide
Actinides
Self assembled monolayers
Silicon Dioxide
ligand
silica
Ligands
Silica
Cations
cation
Positive ions
vitrification
kinetics
Vitrification
Kinetics
transition element
Pore structure
Isomers
Adsorbents

ASJC Scopus subject areas

  • Environmental Engineering
  • Environmental Science(all)
  • Environmental Chemistry

Cite this

Incorporation of hydroxypyridinone ligands into self-assembled monolayers on mesoporous supports for selective actinide sequestration. / Lin, Yuehe; Fiskum, Sandra K.; Yantasee, Wassana; Wu, Hong; Mattigod, Shas V.; Vorpagel, Erich; Fryxell, Glen E.; Raymond, Kenneth N.; Xu, Jide.

In: Environmental Science and Technology, Vol. 39, No. 5, 01.03.2005, p. 1332-1337.

Research output: Contribution to journalArticle

Lin, Yuehe ; Fiskum, Sandra K. ; Yantasee, Wassana ; Wu, Hong ; Mattigod, Shas V. ; Vorpagel, Erich ; Fryxell, Glen E. ; Raymond, Kenneth N. ; Xu, Jide. / Incorporation of hydroxypyridinone ligands into self-assembled monolayers on mesoporous supports for selective actinide sequestration. In: Environmental Science and Technology. 2005 ; Vol. 39, No. 5. pp. 1332-1337.
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AU - Wu, Hong

AU - Mattigod, Shas V.

AU - Vorpagel, Erich

AU - Fryxell, Glen E.

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