Journal article
Heterometallic Uranyl (Hydroxyethyl)iminodiacetic Acid (Heidi) Complexes: Molecular Models for U(VI) Uptake in Complex Media
European journal of inorganic chemistry, Vol.26(11), e202200791
04/11/2023
DOI: 10.1002/ejic.202200791
Appears in UI Libraries Support Open Access
Abstract
Amidoximated absorbents (AO-PAN) effectively remove U(VI) from aqueous solution, but previous studies reported more variability for complex natural waters that contain additional confounding ions and molecules. Ternary phases containing U(VI), M(III) (M=Fe(III), Al(III), Ga(III)), and organic molecules exist under these conditions and cause heterogeneous U(VI) uptake on AO-PAN. The goal of the current study is to provide additional insights into the structural features ternary complexes using N-(2-hydroxyethyl)-iminodiacetic acid (HEIDI) as the model organic chelator and explore the relevance of these species on U(VI) capture. Three model compounds ([(UO2)(Fe)(2)(mu(3)-O)(C6NO5H8)(2)(H2O)(4)] (UFe2), ([(UO2)(Al)(2)(mu(2)-OH)(C6NO5H8)(2)(H2O)(3)] (UAl2) and [(UO2)(Ga)(2)(mu(2)-OH)(C6NO5H8)(2)(H2O)(3)] (UGa2)) were characterized by single-crystal X-ray diffraction. Raman spectra of the model compounds were compared with solution data and the ternary phases were noted in the case of Al(III) and Ga(III), but not in the Fe(III) system. U(VI) adsorption onto AO-PAN was not impacted by the presence of HEIDI or the trivalent metal species.
Details
- Title: Subtitle
- Heterometallic Uranyl (Hydroxyethyl)iminodiacetic Acid (Heidi) Complexes: Molecular Models for U(VI) Uptake in Complex Media
- Creators
- Tiron H. L. Jahinge - University of IowaDaniel K. Unruh - University of IowaTori Z. Forbes - University of Iowa
- Resource Type
- Journal article
- Publication Details
- European journal of inorganic chemistry, Vol.26(11), e202200791
- DOI
- 10.1002/ejic.202200791
- ISSN
- 1434-1948
- eISSN
- 1099-0682
- Publisher
- Wiley
- Number of pages
- 11
- Grant note
- R01ES027 / National Institute of Environmental Health Sciences of the National Institutes of Health; United States Department of Health & Human Services; National Institutes of Health (NIH) - USA; NIH National Institute of Environmental Health Sciences (NIEHS)
- Language
- English
- Electronic publication date
- 02/22/2023
- Date published
- 04/11/2023
- Academic Unit
- Civil and Environmental Engineering; Core Research Facilities; Chemistry
- Record Identifier
- 9984380461602771
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