Three new layered uranyl phosphates, Ba(3)(UO(2))(2)(HPO(4))(2)(PO(4))(2), Ba(UO(2))F(PO(4)), and Cs(2)(UO(2))(2)(PO(4))(2), were synthesized under mild hydrothermal conditions. These compounds serve as models for uranium alteration phases that might form when spent nuclear fuel is subjected to oxidizing groundwater containing dissolved phosphate. In order to address the possibility of the incorporation of the key fission product (129)I in the form of iodate into uranyl alteration phases, the substitution of IO(3)(-) for the structurally related PO(3)(OH)(2-) or PO(4)(3-) unit was probed. Iodate incorporation into these phases was investigated using LA-ICP-MS, and these data indicate incorporation of iodine with levels as high as 4162 ppm.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1021/ic9011247 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
3D-Porous Carbon Nitride Through Proton Regulation and Photocatalytic Synergy for Efficient Uranium Extraction From Seawater.
Small
December 2024
Key Laboratory of Photonic and Electronic Bandgap Materials Ministry of Education, School of Physics and Electronic Engineering, Harbin Normal University, Harbin, 150025, China.
Extracting uranium from seawater is crucial for tapping oceanic resources vital to future energy supply. This study synthesized a novel nitrogen vacancy carbon nitride (NCN) grafted polyethyleneimine (PEI) composite material (NCNP). Experiments and molecular dynamics simulations reveal that NCNP effectively hinders the diffusion of uranyl ions (UO ) to the NCN surface, thereby inhibiting electron transfer reactions.
View Article and Find Full Text PDFInteraction between Uranyl Cations and Layered Double Hydroxide Nanoparticles: Implications for Nuclear Wastewater Management.
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 PDFEfficient Charge Transfer Driven Electrochemiluminescence in Heteroatom-Involved Cocrystal Engineering for Detection of Uranyl Ions.
Anal Chem
December 2024
School of Chemistry and Chemical Engineering, Nanchang University, Nanchang, 330031, China.
Article Synopsis
- Strategies to improve charge transfer efficiency in electrochemiluminescence (ECL) systems are crucial for advancing ECL technology.
- The introduction of heteroatom-involved cocrystal engineering enables the construction of highly ordered cocrystal superstructures that enhance charge transfer performance.
- These cocrystals allow for precise control of electron distribution and ECL emissions, offering new opportunities for detection, particularly of substances like UO that can inhibit charge transfer and quench the ECL signal.
Layered Bio-Inorganic MXene Membranes: A Green Approach for Uranium Extraction from Seawater Using Genetically Modified .
Nano Lett
November 2024
Frontiers Science Center for Rare Isotopes, Lanzhou University, Lanzhou 730000, China.
With the growing demand for clean energy, efficient uranium extraction technologies are needed, especially from seawater, where uranium reserves are huge. Here, we developed a composite membrane by inserting engineered with super uranyl-binding protein (SUP) within a two-dimensional (2D) MXene (TiCT) layer. SUP endowed the bioinorganic hybrid membrane with ultrahigh selectivity for uranyl ions, while the engineered improved the mechanical strength and economy of the membranes.
View Article and Find Full Text PDFLeaching Peculiarity of Uranium-Containing Layered Double Hydroxide Sediment Varied with Environmental Anions.
Langmuir
October 2024
Fundamental Science on Nuclear Wastes and Environmental Safety Laboratory, Southwest University of Science and Technology, Mianyang 621010, PR China.
In this research, we focus our attention on the leaching peculiarity of uranium-containing Mg-Al layered double hydroxide (LDH) which is one kind of waste sediment in uranium tailings, generated by the alkalinization of uranyl raffinate. The effect of inorganic (CO, SO, PO) and organic (CO, CHO, CHOP) anions were investigated. Atomic force microscopy result showed that the thickness of CO-LDH increased to 8.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!