The synthesis of an isoamethyrin derivative containing two CH(2)CH(2)CO(2)CH(3) moieties in the beta-pyrrolic positions and its use in the colorimetric detection of the uranyl cation after immobilization onto a solid support is reported.
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http://dx.doi.org/10.1039/b718627d | DOI Listing |
ACS ES T Water
July 2024
MTA-SZTE Lendület Biocolloids Research Group, Interdisciplinary Excellence Centre, University of Szeged, H-6720 Szeged, Hungary.
Effective uranium (U) capture is required for the remediation of contaminated solutes associated with the nuclear fuel cycle, including fuel reprocessing effluents, decommissioning, or nuclear accident cleanup. Here, interactions between uranyl cations (UO ) and a Mg-Al layered double hydroxide (LDH) were investigated using two types of uranyl-bearing LDH colloids. The first (ULDH) was synthesized by coprecipitation with 10% of Mg substituted by UO .
View Article and Find Full Text PDFInorg Chem
December 2024
Laboratory of Nuclear Energy Chemistry, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
Highly selective extraction of uranium from seawater is currently extremely challenging. Although the amidoxime group (HAO) is the commonly used ligand in seawater uranium extraction, it also has strong binding capacity for vanadium ion. It has been shown that the introduction of phosphate groups into amidoxime-based adsorbents can improve the adsorption performance of materials through a synergistic effect between functional groups.
View Article and Find Full Text PDFJ Hazard Mater
November 2024
National Key Laboratory of Uranium Resources Exploration-Mining and Nuclear Remote Sensing, East China University of Technology, Nanchang 330013, China; Engineering Technology Research Center of Nuclear Radiation Detection and Application of Jiangxi Province, East China University of Technology, Nanchang 330013, China. Electronic address:
Photocatalytic reduction of uranyl ions (UO) is an environmentally friendly, energy efficient, and highly effective method for uranium-containing wastewater treatment and uranium recovery. Herein, a novel photocatalytic material CH-8 @NNFO-4 with abundant oxygen vacancies was synthesize by growing Ca(OH) on the surface of Fe doped NaNbO in situ. The Ca(OH) synergizes with the oxygen vacancies, creating a microenvironment that narrows the bandgap and extends the light response range.
View Article and Find Full Text PDFJ Inorg Biochem
March 2025
Department of Chemical, Physical, Mathematical and Natural Sciences, University of Sassari, 07100 Sassari, Italy; Department of Physics and Astronomy, University of Padova, Via F. Marzolo 8, 35131 Padova, Italy.
It is a challenging task to develop uranyl-chelating agents based on peptide chemistry. A recently developed cationic dummy atom model of uranyl in conjunction with the classical molecular dynamics simulation presents a helpful utility to study the chelation of uranyl by peptides with a low computational cost. In the present study, it was used to describe the chelation of uranyl by the cyclic decapeptide with 4 Glu residues cyc-GluArgGluProGlyGluTrpGluProGly and its derivatives containing two phosphorylated serines in place of two Glu, termed pS16, pS18, pS38, and pS68.
View Article and Find Full Text PDFJ Phys Chem B
December 2024
Radiochemistry Division, Bhabha Atomic Research Centre, Mumbai 400 085, India.
Complexation thermodynamics of uranyl ions with well-known reprocessing ligands like tributyl phosphate (TBP) and dihexyl octanamide (DHOA) was studied in an ionic liquid (IL) versus a molecular solvent. Whereas 1-butyl-3-methylimidazolium bis(trifluoromethyl sulfonyl)imide (Bumim·TfN) was used as an IL due to its favorable viscosity, acetonitrile was the choice of molecular solvent due to its poor coordinating nature. Optical spectroscopy studies revealed that UO ions formed species of the types ML and ML with both TBP and DHOA, in a stepwise manner.
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