1
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Kaplan U, Amayri S, Drebert J, Grolimund D, Reich T. Plutonium mobility and reactivity in a heterogeneous clay rock barrier accented by synchrotron-based microscopic chemical imaging. Sci Rep 2024; 14:3087. [PMID: 38321076 PMCID: PMC10847135 DOI: 10.1038/s41598-024-53189-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2023] [Accepted: 01/29/2024] [Indexed: 02/08/2024] Open
Abstract
The long-term safe disposal of radioactive waste corresponds to a challenging responsibility of present societies. Within deep geological waste disposal concepts, host rocks correspond to the ultimate safety barrier towards the environment. To assess the performance of such barriers over extended time scales, mechanistic information on the interaction between the radiotoxic, long-lived radionuclides like plutonium and the host rock is essential. Chemical imaging based on synchrotron microspectroscopic techniques was used to visualize undisturbed reactive transport patterns of Pu within pristine Opalinus Clay rock material. Pu+V is shown to be progressively reduced along its diffusion path to Pu+IV and Pu+III due to interaction with redox-active clay rock constituents. Experimental results and modeling emphasize the dominant role of electron-transfer reactions determining the mobility of Pu in reactive barrier systems. The effective migration velocity of Pu is controlled by the kinetic rates of the reduction to Pu+IV and Pu+III and the redox capacity of the involved electron donor pools. To advance our predictive capabilities further, an improved understanding of the nature and capacity of redox-active components of the reactive barrier material is fundamental. The findings represent an essential contribution to the evaluation of the long-term safety of potential nuclear waste repositories and have implications regarding the development of effective geological disposal strategies.
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Affiliation(s)
- U Kaplan
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, 55099, Mainz, Germany
| | - S Amayri
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, 55099, Mainz, Germany
| | - J Drebert
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, 55099, Mainz, Germany
| | - D Grolimund
- Swiss Light Source, Paul-Scherrer-Institut, 5232, Villigen PSI, Switzerland.
| | - T Reich
- Department of Chemistry, Johannes Gutenberg-Universität Mainz, 55099, Mainz, Germany.
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2
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Daronnat L, Holfeltz V, Boubals N, Dumas T, Guilbaud P, Martinez DM, Moisy P, Sauge-Merle S, Lemaire D, Solari PL, Berthon L, Berthomieu C. Investigation of the Plutonium(IV) Interactions with Two Variants of the EF-Hand Ca-Binding Site I of Calmodulin. Inorg Chem 2023; 62:8334-8346. [PMID: 37184364 DOI: 10.1021/acs.inorgchem.3c00845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Due to its presence in the nuclear industry and its strong radiotoxicity, plutonium is an actinide of major interest in the event of internal contamination. To improve the understanding of its mechanisms of transport and accumulation in the body, the complexation of Pu(IV) to the most common protein calcium-binding motif found in cells, the EF-hand motif of calmodulin, was investigated. Visible and X-ray absorption spectroscopies (XAS) in solution made it possible to investigate the speciation of plutonium at physiological pH (pH 7.4) and pH 6 in two variants of the calmodulin Ca-binding site I and using Pu(IV) in different media: carbonate, chloride, or nitrate solutions. Three different species of Pu were identified in the samples, with formation of 1:1 Pu(IV):calmodulin peptide complexes, Pu(IV) reduction, and formation of peptide-mediated Pu(IV) hexanuclear cluster.
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Affiliation(s)
- Loïc Daronnat
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Vanessa Holfeltz
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Nathalie Boubals
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Philippe Guilbaud
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | | | - Philippe Moisy
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Sandrine Sauge-Merle
- Aix Marseille Université, CEA, CNRS, BIAM, UMR7265, IPM, Saint Paul-Lez-Durance 13108, France
| | - David Lemaire
- Aix Marseille Université, CEA, CNRS, BIAM, UMR7265, IPM, Saint Paul-Lez-Durance 13108, France
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL, L'Orme des Merisiers, Départementale 128, Saint Aubin 91190, France
| | - Laurence Berthon
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, Bagnols-sur-cèze 30200, France
| | - Catherine Berthomieu
- Aix Marseille Université, CEA, CNRS, BIAM, UMR7265, IPM, Saint Paul-Lez-Durance 13108, France
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3
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Borisova NE, Fedoseev AM, Kostikova GV, Matveev PI, Starostin LY, Sokolova MN, Evsiunina MV. Solvent Extraction and Conformation Rigidity: Actinide(IV) and Actinide(VI) Come Together. Inorg Chem 2022; 61:20774-20784. [PMID: 36516029 DOI: 10.1021/acs.inorgchem.2c02578] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The first comprehensive structural and extraction study of a 2,2'-bipyridine-6,6'-dicarboxamide (L diamide) extractant for U, Np, Pu, Th, Am, and Eu ions showed great potential for actinide separation due to steric hindrance of the amidic side phenyl ring of the given compound. The study of the complexes of An(VI) and Th(IV) with 2,2'-bipyridyldicarboxamide-type extractants demonstrated the structure of the extraction species for the first time. Investigation of the extraction properties with the radiometric and millimolar quantities of actinides showed similar extraction trends. For the first time, a metal-ion-induced phenyl-ring rotation restriction was found for the U, Th, and Eu complexes by employing temperature-dependent dynamic NMR. A study of the solution behavior of the complexes accompanied by density functional theory modeling studies elucidated the mechanism of the unusual C-N bond rotation restriction induced by metal coordination.
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Affiliation(s)
- Nataliya E Borisova
- Department of ChemistryM. V. Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow119991, Russia
| | - Alexandre M Fedoseev
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Leninsky Prospect, Building 4, Moscow119071, Russia
| | - Galina V Kostikova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Leninsky Prospect, Building 4, Moscow119071, Russia
| | - Petr I Matveev
- Department of ChemistryM. V. Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow119991, Russia
| | - Leonid Yu Starostin
- Department of ChemistryM. V. Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow119991, Russia
| | - Marina N Sokolova
- Frumkin Institute of Physical Chemistry and Electrochemistry, Russian Academy of Sciences, 31 Leninsky Prospect, Building 4, Moscow119071, Russia
| | - Mariia V Evsiunina
- Department of ChemistryM. V. Lomonosov Moscow State University, Leninskie Gory 1/3, Moscow119991, Russia
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4
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Virot M, Dumas T, Cot-Auriol M, Moisy P, Nikitenko SI. Synthesis and multi-scale properties of PuO 2 nanoparticles: recent advances and open questions. NANOSCALE ADVANCES 2022; 4:4938-4971. [PMID: 36504736 PMCID: PMC9680947 DOI: 10.1039/d2na00306f] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Accepted: 08/15/2022] [Indexed: 05/28/2023]
Abstract
Due to the increased attention given to actinide nanomaterials, the question of their structure-property relationship is on the spotlight of recent publications. Plutonium oxide (PuO2) particularly plays a central role in nuclear energetics and a comprehensive knowledge about its properties when nanosizing is of paramount interest to understand its behaviour in environmental migration schemes but also for the development of advanced nuclear energy systems underway. The element plutonium further stimulates the curiosity of scientists due to the unique physical and chemical properties it exhibits around the periodic table. PuO2 crystallizes in the fluorite structure of the face-centered cubic system for which the properties can be significantly affected when shrinking. Identifying the formation mechanism of PuO2 nanoparticles, their related atomic, electronic and crystalline structures, and their reactivity in addition to their nanoscale properties, appears to be a fascinating and challenging ongoing topic, whose recent advances are discussed in this review.
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Affiliation(s)
- Matthieu Virot
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM Marcoule France
| | - Thomas Dumas
- CEA, DEN, DMRC, Univ Montpellier Marcoule France
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5
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Moreno Martinez D, Guillaumont D, Guilbaud P. Force Field Parameterization of Actinyl Molecular Cations Using the 12-6-4 Model. J Chem Inf Model 2022; 62:2432-2445. [PMID: 35537184 DOI: 10.1021/acs.jcim.2c00153] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
In this work, a set of 12-6-4 force fields (FFs) parameters were developed for the actinyl molecular cations, AnO2n+ (n = 1, 2), from uranium to plutonium for classical molecular dynamics (MD) for four water models: TIP3P, SPC/E, OPC3, and TIP4Pew. Such a non-bonded potential model taking into account the induced dipole between the metallic center and the surrounding molecules has shown better performances for various cations than the classic 12-6 non-bonded potentials. The parametrization method proposed elsewhere for metallic cations has been extended to these molecular cations. In contrast to the actinyl 12-6 FFs from the literature, the new models reproduce correctly both solvation and thermodynamic properties, thanks to the inclusion of the induced dipole term (C4). The transferability of such force fields was assessed by performing MD simulations of carbonato actinyl species, which are highly implicated in actinide migration or actinide extraction from seawater. A highly satisfying agreement was found when comparing the EXAFS signals computed from our MD simulation to the experimental ones. The set of FFs developed here opens new possibilities for the study of actinide chemistry.
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6
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Chupin G, Tamain C, Dumas T, Solari PL, Moisy P, Guillaumont D. Characterization of a Hexanuclear Plutonium(IV) Nanostructure in an Acetate Solution via Visible-Near Infrared Absorption Spectroscopy, Extended X-ray Absorption Fine Structure Spectroscopy, and Density Functional Theory. Inorg Chem 2022; 61:4806-4817. [PMID: 35289606 DOI: 10.1021/acs.inorgchem.1c02876] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new hexanuclear plutonium cluster has been stabilized in aqueous media with acetate ligands. To probe the formation of such a complex structure, visible-near infrared (vis-NIR) absorption spectroscopy, extended X-ray absorption fine structure (EXAFS) spectroscopy, and density functional theory (DFT) were combined. The presence of Pu6O4(OH)4(CH3COO)12 species in solution was first detected by vis-NIR and EXAFS spectroscopy. To confirm unambiguously this structure, EXAFS spectra were simulated from ab initio calculations. Debye-Waller factors and structural parameters were derived from DFT calculations. A large number of 5f electrons were treated as valence or core electrons using small- and large-core relativistic effective pseudopotentials. It is possible to reproduce accurately the EXAFS spectrum of the octahedral hexamer cluster at both levels of calculations. Further DFT and EXAFS calculations were performed on clusters of lower or higher nuclearities and of different geometries using the 5f-core approximation. The result shows that trimer, tetramer, flat hexamer, and even 16-mer clusters exhibit different EXAFS patterns and confirm the very specific octahedral hexanuclear EXAFS signature.
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Affiliation(s)
- Geoffroy Chupin
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Christelle Tamain
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL, L'Orme des Merisiers, BP 48, St Aubin, 91192 Gif sur Yvette, France
| | - Philippe Moisy
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, 30207 Bagnols sur Cèze, France
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7
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Carter KP, Wacker JN, Smith KF, Deblonde GJP, Moreau LM, Rees JA, Booth CH, Abergel RJ. In situ beam reduction of Pu(IV) and Bk(IV) as a route to trivalent transuranic coordination complexes with hydroxypyridinone chelators. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:315-322. [PMID: 35254293 PMCID: PMC8900832 DOI: 10.1107/s1600577522000200] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 01/06/2022] [Indexed: 06/14/2023]
Abstract
The solution-state interactions of plutonium and berkelium with the octadentate chelator 3,4,3-LI(1,2-HOPO) (343-HOPO) were investigated and characterized by X-ray absorption spectroscopy, which revealed in situ reductive decomposition of the tetravalent species of both actinide metals to yield Pu(III) and Bk(III) coordination complexes. X-ray absorption near-edge structure (XANES) measurements were the first indication of in situ synchrotron redox chemistry as the Pu threshold and white-line position energies for Pu-343-HOPO were in good agreement with known diagnostic Pu(III) species, whereas Bk-343-HOPO results were found to mirror the XANES behavior of Bk(III)-DTPA. Extended X-ray absorption fine structure results revealed An-OHOPO bond distances of 2.498 (5) and 2.415 (2) Å for Pu and Bk, respectively, which match well with bond distances obtained for trivalent actinides and 343-HOPO via density functional theory calculations. Pu(III)- and Bk(III)-343-HOPO data also provide initial insight into actinide periodicity as they can be compared with previous results with Am(III)-, Cm(III)-, Cf(III)-, and Es(III)-343-HOPO, which indicate there is likely an increase in 5f covalency and heterogeneity across the actinide series.
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Affiliation(s)
- Korey P. Carter
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jennifer N. Wacker
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Kurt F. Smith
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | | | - Liane M. Moreau
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Julian A. Rees
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Corwin H. Booth
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Rebecca J. Abergel
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
- Department of Nuclear Engineering, University of California, Berkeley, CA 94720, USA
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8
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Su J, Cheisson T, McSkimming A, Goodwin CAP, DiMucci IM, Albrecht-Schönzart T, Scott BL, Batista ER, Gaunt AJ, Kozimor SA, Yang P, Schelter EJ. Complexation and redox chemistry of neptunium, plutonium and americium with a hydroxylaminato ligand. Chem Sci 2021; 12:13343-13359. [PMID: 34777753 PMCID: PMC8528073 DOI: 10.1039/d1sc03905a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2021] [Accepted: 09/03/2021] [Indexed: 11/25/2022] Open
Abstract
There is significant interest in ligands that can stabilize actinide ions in oxidation states that can be exploited to chemically differentiate 5f and 4f elements. Applications range from developing large-scale actinide separation strategies for nuclear industry processing to carrying out analytical studies that support environmental monitoring and remediation efforts. Here, we report syntheses and characterization of Np(iv), Pu(iv) and Am(iii) complexes with N-tert-butyl-N-(pyridin-2-yl)hydroxylaminato, [2-(tBuNO)py]−(interchangeable hereafter with [(tBuNO)py]−), a ligand which was previously found to impart remarkable stability to cerium in the +4 oxidation state. An[(tBuNO)py]4 (An = Pu, 1; Np, 2) have been synthesized, characterized by X-ray diffraction, X-ray absorption, 1H NMR and UV-vis-NIR spectroscopies, and cyclic voltammetry, along with computational modeling and analysis. In the case of Pu, oxidation of Pu(iii) to Pu(iv) was observed upon complexation with the [(tBuNO)py]− ligand. The Pu complex 1 and Np complex 2 were also isolated directly from Pu(iv) and Np(iv) precursors. Electrochemical measurements indicate that a Pu(iii) species can be accessed upon one-electron reduction of 1 with a large negative reduction potential (E1/2 = −2.26 V vs. Fc+/0). Applying oxidation potentials to 1 and 2 resulted in ligand-centered electron transfer reactions, which is different from the previously reported redox chemistry of UIV[(tBuNO)py]4 that revealed a stable U(v) product. Treatment of an anhydrous Am(iii) precursor with the [(tBuNO)py]− ligand did not result in oxidation to Am(iv). Instead, the dimeric complex [AmIII(μ2-(tBuNO)py)((tBuNO)py)2]2 (3) was isolated. Complex 3 is a rare example of a structurally characterized non-aqueous Am-containing molecular complex prepared using inert atmosphere techniques. Predicted redox potentials from density functional theory calculations show a trivalent accessibility trend of U(iii) < Np(iii) < Pu(iii) and that the higher oxidation states of actinides (i.e., +5 for Np and Pu and +4 for Am) are not stabilized by [2-(tBuNO)py]−, in good agreement with experimental observations. The coordination modes and electronic properties of a strongly coordinating hydroxylaminato ligand with Np, Pu and Am were investigated.Complexes were characterized by a range of experimental and computational techniques.![]()
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Affiliation(s)
- Jing Su
- Theoretical Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Thibault Cheisson
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 S 34th St. Philadelphia Pennsylvania 19104 USA
| | - Alex McSkimming
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 S 34th St. Philadelphia Pennsylvania 19104 USA
| | - Conrad A P Goodwin
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Ida M DiMucci
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Thomas Albrecht-Schönzart
- Department of Chemistry and Biochemistry, Florida State University 95 Chieftan Way Tallahassee Florida 32306 USA
| | - Brian L Scott
- Materials and Physics Applications Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Enrique R Batista
- Theoretical Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Andrew J Gaunt
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Stosh A Kozimor
- Chemistry Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Ping Yang
- Theoretical Division, Los Alamos National Laboratory Los Alamos New Mexico 87545 USA
| | - Eric J Schelter
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania 231 S 34th St. Philadelphia Pennsylvania 19104 USA
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9
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Cook M, Etschmann B, Ram R, Ignatyev K, Gervinskas G, Conradson SD, Cumberland S, Wong VNL, Brugger J. The nature of Pu-bearing particles from the Maralinga nuclear testing site, Australia. Sci Rep 2021; 11:10698. [PMID: 34021195 PMCID: PMC8139974 DOI: 10.1038/s41598-021-89757-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 04/20/2021] [Indexed: 11/15/2022] Open
Abstract
The high-energy release of plutonium (Pu) and uranium (U) during the Maralinga nuclear trials (1955-1963) in Australia, designed to simulate high temperature, non-critical nuclear accidents, resulted in wide dispersion µm-sized, radioactive, Pu-U-bearing 'hot' particles that persist in soils. By combining non-destructive, multi-technique synchrotron-based micro-characterization with the first nano-scale imagining of the composition and textures of six Maralinga particles, we find that all particles display intricate physical and chemical make-ups consistent with formation via condensation and cooling of polymetallic melts (immiscible Fe-Al-Pu-U; and Pb ± Pu-U) within the detonation plumes. Plutonium and U are present predominantly in micro- to nano-particulate forms, and most hot particles contain low valence Pu-U-C compounds; these chemically reactive phases are protected by their inclusion in metallic alloys. Plutonium reworking was observed within an oxidised rim in a Pb-rich particle; however overall Pu remained immobile in the studied particles, while small-scale oxidation and mobility of U is widespread. It is notoriously difficult to predict the long-term environmental behaviour of hot particles. Nano-scale characterization of the hot particles suggests that long-term, slow release of Pu from the hot particles may take place via a range of chemical and physical processes, likely contributing to on-going Pu uptake by wildlife at Maralinga.
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Affiliation(s)
- Megan Cook
- School of Earth, Atmosphere and Environment, Monash University, Clayton, Australia
| | - Barbara Etschmann
- School of Earth, Atmosphere and Environment, Monash University, Clayton, Australia.
| | - Rahul Ram
- School of Earth, Atmosphere and Environment, Monash University, Clayton, Australia
| | - Konstantin Ignatyev
- Diamond Light Source, Harwell Science and Innovation Campus, Didcot, Oxon, OX11 0QX, United Kingdom
| | - Gediminas Gervinskas
- Ramaciotti Centre for Cryo-Electron Microscopy, Monash University, Clayton, Australia
| | - Steven D Conradson
- Department of Chemistry, Washington State University, Pullman, WA, USA
- Department of Complex Matter, Josef Stefan Institute, Ljubljana, Slovenia
| | | | - Vanessa N L Wong
- School of Earth, Atmosphere and Environment, Monash University, Clayton, Australia
| | - Joёl Brugger
- School of Earth, Atmosphere and Environment, Monash University, Clayton, Australia.
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10
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Zhang J, Zhou L, Jia Z, Li X, Qi Y, Yang C, Guo X, Chen S, Long H, Ma L. Construction of covalent organic framework with unique double-ring pore for size-matching adsorption of uranium. NANOSCALE 2020; 12:24044-24053. [PMID: 33295920 DOI: 10.1039/d0nr06854c] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
The separation and recovery of key nuclides such as uranium and plutonium from effluents related to nuclear industry is of great significance for alleviating the shortage of nuclear energy resources and protecting the environment and human health. However, the high temperature, strong acidity and radioactivity of the nuclear effluents pose a severe challenge to the separation materials used in such conditions. The diversity of structure, flexibility of design, and excellent physicochemical stability of covalent organic framework materials (COFs) provide the possibility for the directional design and preparation of adsorbents for use under harsh conditions. Herein, three COFs with similar structure, different pore sizes and connecting modules were synthesized. The ingenious structure predesign enables Dp-COF to have three carboxyl groups oriented toward the pore center and laid out in appropriate spatial positions, which builds hydrogen-bonding bridges between carboxycarbonyl and hydroxyl groups, and thus constructs for the first time a unique COF material with a double-ring pore. The inner pore size of the "double-ring" is slightly larger than the diameter of uranyl hydrate, which leads to a size-matching adsorption of uranium by Dp-COF, thus greatly reducing the effect of protonation. Even in the simulated spent fuel reprocessing liquid with pH = 1.0, the adsorption capacity of Dp-COF for uranium can reach 66.3 mg g-1, and the adsorption capacity reaches 317.3 mg g-1 at pH = 4.5, which is very rare among the reported COFs. More excitingly, the removal rate for uranium reaches up to an unprecedented 99.8% due to the size-matching effect, more than any analogous adsorbents. This study not only proposes new ideas for the design and regulation of the microscopic configuration of COF materials, but also provides an alternative approach for the preparation of efficient uranium adsorbents.
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Affiliation(s)
- Jie Zhang
- College of Environment and Ecology, Chengdu University of Technology, No.1, Dongsanlu, Erxianqiao, Chengdu 610059, P. R. China.
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11
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Kurihara E, Takehara M, Suetake M, Ikehara R, Komiya T, Morooka K, Takami R, Yamasaki S, Ohnuki T, Horie K, Takehara M, Law GTW, Bower W, W Mosselmans JF, Warnicke P, Grambow B, Ewing RC, Utsunomiya S. Particulate plutonium released from the Fukushima Daiichi meltdowns. THE SCIENCE OF THE TOTAL ENVIRONMENT 2020; 743:140539. [PMID: 32663681 DOI: 10.1016/j.scitotenv.2020.140539] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2020] [Revised: 06/20/2020] [Accepted: 06/24/2020] [Indexed: 06/11/2023]
Abstract
Traces of Pu have been detected in material released from the Fukushima Daiichi Nuclear Power Plant (FDNPP) in March of 2011; however, to date the physical and chemical form of the Pu have remained unknown. Here we report the discovery of particulate Pu associated with cesium-rich microparticles (CsMPs) that formed in and were released from the reactors during the FDNPP meltdowns. The Cs-pollucite-based CsMP contained discrete U(IV)O2 nanoparticles, <~10 nm, one of which is enriched in Pu adjacent to fragments of Zr-cladding. The isotope ratios, 235U/238U, 240Pu/239Pu, and 242Pu/239Pu, of the CsMPs were determined to be ~0.0193, ~0.347, and ~0.065, respectively, which are consistent with the calculated isotopic ratios of irradiated-fuel fragments. Thus, considering the regional distribution of CsMPs, the long-distance dispersion of Pu from FNDPP is attributed to the transport by CsMPs that have incorporated nanoscale fuel fragments prior to their dispersion up to 230 km away from the Fukushima Daiichi reactor site.
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Affiliation(s)
- Eitaro Kurihara
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Masato Takehara
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Mizuki Suetake
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ryohei Ikehara
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tatsuki Komiya
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazuya Morooka
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ryu Takami
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan
| | - Shinya Yamasaki
- Faculty of Pure and Applied Sciences and Center for Research in Isotopes and Environmental Dynamics, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8577, Japan
| | - Toshihiko Ohnuki
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8550, Japan
| | - Kenji Horie
- National Institute of Polar Research, 10-3, Midori-cho, Tachikawa-shi, Tokyo 190-8518, Japan; Department of Polar Science, The Graduate University for Advanced Studies (SOKENDAI), Shonan Village, Hayama, Kanagawa 240-0193, Japan
| | - Mami Takehara
- National Institute of Polar Research, 10-3, Midori-cho, Tachikawa-shi, Tokyo 190-8518, Japan
| | - Gareth T W Law
- Radiochemistry Unit, Department of Chemistry, The University of Helsinki, Helsinki 00014, Finland
| | - William Bower
- Radiochemistry Unit, Department of Chemistry, The University of Helsinki, Helsinki 00014, Finland
| | | | - Peter Warnicke
- Swiss Light Source, Paul Scherrer Institute, 5232 Villigen, Switzerland
| | - Bernd Grambow
- SUBATECH, IMT Atlantique, CNRS-IN2P3, The University of Nantes, Nantes 44307, France
| | - Rodney C Ewing
- Department of Geological Sciences and Center for International Security and Cooperation, Stanford University, Stanford, CA 94305-2115, USA
| | - Satoshi Utsunomiya
- Department of Chemistry, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
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12
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Takao K, Ikeda Y. Coordination Chemistry of Actinide Nitrates with Cyclic Amide Derivatives for the Development of the Nuclear Fuel Materials Selective Precipitation (NUMAP) Reprocessing Method. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000504] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Koichiro Takao
- Laboratory for Advanced Nuclear Energy Institute of Innovative Research Tokyo Institute of Technology (TokyoTech) 2‐12‐1 N1‐32, O‐okayama Meguro‐ku Tokyo 152‐8550 Japan
| | - Yasuhisa Ikeda
- Laboratory for Advanced Nuclear Energy Institute of Innovative Research Tokyo Institute of Technology (TokyoTech) 2‐12‐1 N1‐32, O‐okayama Meguro‐ku Tokyo 152‐8550 Japan
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13
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Weßling P, Schenk T, Braun F, Beele BB, Trumm S, Trumm M, Schimmelpfennig B, Schild D, Geist A, Panak PJ. Trivalent Actinide Ions Showing Tenfold Coordination in Solution. Inorg Chem 2020; 59:12410-12421. [PMID: 32794734 DOI: 10.1021/acs.inorgchem.0c01526] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Trivalent actinides generally exhibit ninefold coordination in solution. 2,6-Bis(5,6-dipropyl-1,2,4-triazin-3-yl)pyridine (nPr-BTP), a tridentate nitrogen donor ligand, is known to form ninefold coordinated 1:3 complexes, [An(nPr-BTP)3]3+ (An = U, Pu, Am, Cm) in solution. We report a Cm(III) complex with tenfold coordination in solution, [Cm(nPr-BTP)3(NO3)]2+. This species was identified using time-resolved laser fluorescence spectroscopy (TRLFS), vibronic side band spectroscopy (VSBS), X-ray photoelectron spectroscopy (XPS), and density functional theory (DFT). Adding nitrate to a solution of the [Cm(nPr-BTP)3]3+ complex in 2-propanol shifts the Cm(III) emission band from 613.1 to 617.3 nm. This bathochromic shift is due to a higher coordination number of the Cm(III) ion in solution, in agreement with the formation of the [Cm(nPr-BTP)3(NO3)]2+ complex. The formation of this complex exhibits slow kinetics in the range of 5 to 12 days, depending on the water content of the solvent. Formation of a complex [Cm(nPr-BTP)3(X)]2+ was not observed for anions other than nitrate (X- = NO2-, CN-, or OTf-). The formation of the [Cm(nPr-BTP)3(NO3)]2+ complex was studied as a function of NO3- and nPr-BTP concentrations, and slope analyses confirmed the addition of one nitrate anion to the [Cm(nPr-BTP)3]3+ complex. Experiments with varied nPr-BTP concentration show that [Cm(nPr-BTP)3(NO3)]2+ only forms at nPr-BTP concentrations below 10-4 mol/L whereas for concentrations greater than 10-4 mol/L the formation of the tenfold species is suppressed and [Cm(nPr-BTP)3]3+ is the only species present. The presence of the tenfold coordinated complex is supported by VSBS, XPS, and DFT calculations. The vibronic side band of the [Cm(nPr-BTP)3(NO3)]2+ complex exhibits a nitrate stretching mode not observed in the [Cm(nPr-BTP)3]3+ complex. Moreover, XPS on [M(nPr-BTP)3(NO3)](NO3)2 (M = Eu, Am) yields signals from both non-coordinated and coordinated nitrate. Finally, DFT calculations reveal that the energetically most favored structure is obtained if the nitrate is positioned on the C2 axis of the D3 symmetrical [Cm(nPr-BTP)3]3+ complex with a bond distance of 413 pm. Combining results from TRLFS, VSBS, XPS, and DFT provides sound evidence for a unique tenfold coordinated Cm(III) complex in solution-a novelty in An(III) solution chemistry.
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Affiliation(s)
- Patrik Weßling
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, 76021 Karlsruhe, Germany.,Ruprecht-Karls-Universität Heidelberg, Institut für Physikalische Chemie, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
| | - Tobias Schenk
- Ruprecht-Karls-Universität Heidelberg, Institut für Physikalische Chemie, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
| | - Felix Braun
- Ruprecht-Karls-Universität Heidelberg, Institut für Physikalische Chemie, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
| | - Björn B Beele
- Bergische Universität Wuppertal, Inorganic Chemistry, Gaußstraße 20, 42119 Wuppertal, Germany
| | - Sascha Trumm
- Karlsruhe Institute of Technology (KIT), Center for Advanced Technological and Environmental Training (FTU), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Michael Trumm
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Bernd Schimmelpfennig
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Dieter Schild
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Andreas Geist
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Petra J Panak
- Karlsruhe Institute of Technology (KIT), Institute for Nuclear Waste Disposal (INE), P.O. Box 3640, 76021 Karlsruhe, Germany.,Ruprecht-Karls-Universität Heidelberg, Institut für Physikalische Chemie, Im Neuenheimer Feld 253, 69120 Heidelberg, Germany
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14
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Maloubier M, Emerson H, Peruski K, Kersting AB, Zavarin M, Almond PM, Kaplan DI, Powell BA. Impact of Natural Organic Matter on Plutonium Vadose Zone Migration from an NH 4Pu(V)O 2CO 3(s) Source. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2020; 54:2688-2697. [PMID: 31942795 DOI: 10.1021/acs.est.9b05651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We investigated the influence of natural organic matter (NOM) on the behavior of Pu(V) in the vadose zone through a combination of the field lysimeter and laboratory studies. Well-defined solid sources of NH4Pu(V)O2CO3(s) were placed in two 5-L lysimeters containing NOM-amended soil collected from the Savannah River Site (SRS) or unamended vadose zone soil and exposed to 3 years of natural South Carolina, USA, meteorological conditions. Lysimeter soil cores were removed from the field, used in desorption experiments, and characterized using wet chemistry methods and X-ray absorption spectroscopy. For both lysimeters, Pu migrated slowly with the majority (>95%) remaining within 2 cm of the source. However, without the NOM amendment, Pu was transported significantly farther than in the presence of NOM. Downward Pu migration appears to be influenced by the initial source oxidation state and composition. These Pu(V) sources exhibited significantly greater migration than previous studies using Pu(IV) or Pu(III) sources. However, batch laboratory experiments demonstrated that Pu(V) is reduced by the lysimeter soil in the order of hours, indicating that downward migration of Pu may be due to cycling between Pu(V) and Pu(IV). Under the conditions of these experiments, NOM appeared to both enhance reduction of the Pu(V) source as well as Pu sorption to soils. This indicates that NOM will tend to have a stabilizing effect on Pu migration under SRS vadose zone field conditions.
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Affiliation(s)
- Melody Maloubier
- Department of Environmental Engineering & Earth Sciences, Clemson University, Clemson, South Carolina 29634, United States
| | - Hilary Emerson
- Subsurface Science and Technology, Energy & Environment, Pacific Northwest National Laboratory, Richland, Washington 99354, United States
| | - Kathryn Peruski
- Department of Environmental Engineering & Earth Sciences, Clemson University, Clemson, South Carolina 29634, United States
| | - Annie B Kersting
- Glenn T. Seaborg Institute, Physical & Life Sciences, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Mavrik Zavarin
- Glenn T. Seaborg Institute, Physical & Life Sciences, Lawrence Livermore National Laboratory, Livermore, California 94550, United States
| | - Philip M Almond
- Savannah River National Laboratory, Aiken, South Carolina 29808, United States
| | - Daniel I Kaplan
- Savannah River National Laboratory, Aiken, South Carolina 29808, United States
| | - Brian A Powell
- Department of Environmental Engineering & Earth Sciences, Clemson University, Clemson, South Carolina 29634, United States
- Savannah River National Laboratory, Aiken, South Carolina 29808, United States
- Department of Chemistry, Clemson University, Clemson, South Carolina 29634, United States
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15
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Aupiais J, Alexandre JC, Sicre R, Siberchicot B, Topin S, Moisy P, Dacheux N. The NpV
and PuV
Carbonate Systems: Thermodynamics and Coordination Chemistry. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.201901245] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
| | - Jean-Charles Alexandre
- CEA, DAM, DIF; 91297 Arpajon France
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM; Site de Marcoule 30207 Bagnols sur Cèze France
| | | | | | | | | | - Nicolas Dacheux
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM; Site de Marcoule 30207 Bagnols sur Cèze France
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16
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Takao K, März J, Matsuoka M, Mashita T, Kazama H, Tsushima S. Crystallization of colourless hexanitratoneptunate(iv) with anhydrous H+ countercations trapped in a hydrogen bonded polymer with diamide linkers. RSC Adv 2020; 10:6082-6087. [PMID: 35497425 PMCID: PMC9049546 DOI: 10.1039/c9ra10090c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Accepted: 01/31/2020] [Indexed: 01/15/2023] Open
Abstract
Centrosymmetric hexanitratoneptunate(iv) crystallizes with anhydrous proton countercations trapped in a hydrogen bonded polymer with diamide linker molecules to give colourless crystals.
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Affiliation(s)
- Koichiro Takao
- Laboratory for Advanced Nuclear Energy
- Institute of Innovative Research
- Tokyo Institute of Technology
- Japan
| | - Juliane März
- Institute of Resource Ecology
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR)
- 01328 Dresden
- Germany
| | - Moe Matsuoka
- Laboratory for Advanced Nuclear Energy
- Institute of Innovative Research
- Tokyo Institute of Technology
- Japan
| | - Takanori Mashita
- Laboratory for Advanced Nuclear Energy
- Institute of Innovative Research
- Tokyo Institute of Technology
- Japan
| | - Hiroyuki Kazama
- Laboratory for Advanced Nuclear Energy
- Institute of Innovative Research
- Tokyo Institute of Technology
- Japan
| | - Satoru Tsushima
- Laboratory for Advanced Nuclear Energy
- Institute of Innovative Research
- Tokyo Institute of Technology
- Japan
- Institute of Resource Ecology
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17
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Kvashnina KO, Romanchuk AY, Pidchenko I, Amidani L, Gerber E, Trigub A, Rossberg A, Weiss S, Popa K, Walter O, Caciuffo R, Scheinost AC, Butorin SM, Kalmykov SN. A Novel Metastable Pentavalent Plutonium Solid Phase on the Pathway from Aqueous Plutonium(VI) to PuO
2
Nanoparticles. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201911637] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Kristina O. Kvashnina
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR) PO Box 510119 01314 Dresden Germany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS40220 38043 Grenoble Cedex 9 France
| | - Anna Yu. Romanchuk
- Department of ChemistryLomonosov Moscow State University 119991 Moscow Russia
| | - Ivan Pidchenko
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR) PO Box 510119 01314 Dresden Germany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS40220 38043 Grenoble Cedex 9 France
| | - Lucia Amidani
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR) PO Box 510119 01314 Dresden Germany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS40220 38043 Grenoble Cedex 9 France
| | - Evgeny Gerber
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR) PO Box 510119 01314 Dresden Germany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS40220 38043 Grenoble Cedex 9 France
- Department of ChemistryLomonosov Moscow State University 119991 Moscow Russia
| | - Alexander Trigub
- National Research Centre “Kurchatov Institute” 123182 Moscow Russia
| | - Andre Rossberg
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR) PO Box 510119 01314 Dresden Germany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS40220 38043 Grenoble Cedex 9 France
| | - Stephan Weiss
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS40220 38043 Grenoble Cedex 9 France
| | - Karin Popa
- Directorate for Nuclear Safety and SecurityEuropean Commission, Joint Research Centre Postfach 2340 76215 Karlsruhe Germany
| | - Olaf Walter
- Directorate for Nuclear Safety and SecurityEuropean Commission, Joint Research Centre Postfach 2340 76215 Karlsruhe Germany
| | - Roberto Caciuffo
- Directorate for Nuclear Safety and SecurityEuropean Commission, Joint Research Centre Postfach 2340 76215 Karlsruhe Germany
| | - Andreas C. Scheinost
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR) PO Box 510119 01314 Dresden Germany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS40220 38043 Grenoble Cedex 9 France
| | - Sergei M. Butorin
- Department of Physics and AstronomyMolecular and Condensed Matter PhysicsUppsala University P.O. Box 516 Uppsala Sweden
| | - Stepan N. Kalmykov
- Department of ChemistryLomonosov Moscow State University 119991 Moscow Russia
- National Research Centre “Kurchatov Institute” 123182 Moscow Russia
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18
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Kvashnina KO, Romanchuk AY, Pidchenko I, Amidani L, Gerber E, Trigub A, Rossberg A, Weiss S, Popa K, Walter O, Caciuffo R, Scheinost AC, Butorin SM, Kalmykov SN. A Novel Metastable Pentavalent Plutonium Solid Phase on the Pathway from Aqueous Plutonium(VI) to PuO 2 Nanoparticles. Angew Chem Int Ed Engl 2019; 58:17558-17562. [PMID: 31621992 PMCID: PMC6900038 DOI: 10.1002/anie.201911637] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Indexed: 11/10/2022]
Abstract
Here we provide evidence that the formation of PuO2 nanoparticles from oxidized PuVI under alkaline conditions proceeds through the formation of an intermediate PuV solid phase, similar to NH4 PuO2 CO3 , which is stable over a period of several months. For the first time, state-of-the-art experiments at Pu M4 and at L3 absorption edges combined with theoretical calculations unambiguously allow to determine the oxidation state and the local structure of this intermediate phase.
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Affiliation(s)
- Kristina O. Kvashnina
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR)PO Box 51011901314DresdenGermany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS4022038043Grenoble Cedex 9France
| | - Anna Yu. Romanchuk
- Department of ChemistryLomonosov Moscow State University119991MoscowRussia
| | - Ivan Pidchenko
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR)PO Box 51011901314DresdenGermany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS4022038043Grenoble Cedex 9France
| | - Lucia Amidani
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR)PO Box 51011901314DresdenGermany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS4022038043Grenoble Cedex 9France
| | - Evgeny Gerber
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR)PO Box 51011901314DresdenGermany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS4022038043Grenoble Cedex 9France
- Department of ChemistryLomonosov Moscow State University119991MoscowRussia
| | - Alexander Trigub
- National Research Centre “Kurchatov Institute”123182MoscowRussia
| | - Andre Rossberg
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR)PO Box 51011901314DresdenGermany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS4022038043Grenoble Cedex 9France
| | - Stephan Weiss
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS4022038043Grenoble Cedex 9France
| | - Karin Popa
- Directorate for Nuclear Safety and SecurityEuropean Commission, Joint Research CentrePostfach 234076215KarlsruheGermany
| | - Olaf Walter
- Directorate for Nuclear Safety and SecurityEuropean Commission, Joint Research CentrePostfach 234076215KarlsruheGermany
| | - Roberto Caciuffo
- Directorate for Nuclear Safety and SecurityEuropean Commission, Joint Research CentrePostfach 234076215KarlsruheGermany
| | - Andreas C. Scheinost
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR)PO Box 51011901314DresdenGermany
- The Rossendorf Beamline at ESRFThe European Synchrotron, CS4022038043Grenoble Cedex 9France
| | - Sergei M. Butorin
- Department of Physics and AstronomyMolecular and Condensed Matter PhysicsUppsala UniversityP.O. Box 516UppsalaSweden
| | - Stepan N. Kalmykov
- Department of ChemistryLomonosov Moscow State University119991MoscowRussia
- National Research Centre “Kurchatov Institute”123182MoscowRussia
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19
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Wacker JN, Han SY, Murray AV, Vanagas NA, Bertke JA, Sperling JM, Surbella RG, Knope KE. From Thorium to Plutonium: Trends in Actinide(IV) Chloride Structural Chemistry. Inorg Chem 2019; 58:10578-10591. [DOI: 10.1021/acs.inorgchem.9b01279] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Jennifer N. Wacker
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Sae Young Han
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Aphra V. Murray
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Nicole A. Vanagas
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Jeffery A. Bertke
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
| | - Joseph M. Sperling
- Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
| | - Robert G. Surbella
- Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, Washington 99354, United States
| | - Karah E. Knope
- Department of Chemistry, Georgetown University, 37th and O Streets NW, Washington, D.C. 20057, United States
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20
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Takao K, Kazama H, Ikeda Y, Tsushima S. Crystal Structure of Regularly Th
-Symmetric [U(NO3
)6
]2−
Salts with Hydrogen Bond Polymers of Diamide Building Blocks. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201811731] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Koichiro Takao
- Laboratory for Advanced Nuclear Energy; Institute of Innovative Research; Tokyo Institute of Technology; 2-12-1 N1-32, O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Hiroyuki Kazama
- Laboratory for Advanced Nuclear Energy; Institute of Innovative Research; Tokyo Institute of Technology; 2-12-1 N1-32, O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Yasuhisa Ikeda
- Laboratory for Advanced Nuclear Energy; Institute of Innovative Research; Tokyo Institute of Technology; 2-12-1 N1-32, O-okayama, Meguro-ku Tokyo 152-8550 Japan
| | - Satoru Tsushima
- Laboratory for Advanced Nuclear Energy; Institute of Innovative Research; Tokyo Institute of Technology; 2-12-1 N1-32, O-okayama, Meguro-ku Tokyo 152-8550 Japan
- Tokyo Tech World Research Hub Initiative (WRHI); Institute of Innovative Research; Tokyo Institute of Technology (Japan); 2-12-1 N1-32, O-okayama, Meguro-ku Tokyo 152-8550 Japan
- Institute of Resource Ecology; Helmholtz-Zentrum Dresden-Rossendorf (HZDR); Bautzner Landstrasse 400 01328 Dresden Germany
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21
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Takao K, Kazama H, Ikeda Y, Tsushima S. Crystal Structure of Regularly T h -Symmetric [U(NO 3 ) 6 ] 2- Salts with Hydrogen Bond Polymers of Diamide Building Blocks. Angew Chem Int Ed Engl 2018; 58:240-243. [PMID: 30430709 DOI: 10.1002/anie.201811731] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 11/13/2018] [Indexed: 11/12/2022]
Abstract
Hexanitratouranate(IV), [U(NO3 )6 ]2- , has been crystallized with anhydrous H+ -involving hydrogen bond polymers connected by selected diamide building blocks. Thanks to the significant moderation of electrostatic interactions between the anions and cations, the molecular structure of [U(NO3 )6 ]2- in these compounds is regularly Th -symmetric. The f-f transitions stemming from 5f2 configuration of U4+ are strictly forbidden by the Laporte selection rule in such a centrosymmetric system, so that the obtained compounds are nearly colourless in contrast to other UIV species usually coloured in green.
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Affiliation(s)
- Koichiro Takao
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Hiroyuki Kazama
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Yasuhisa Ikeda
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan
| | - Satoru Tsushima
- Laboratory for Advanced Nuclear Energy, Institute of Innovative Research, Tokyo Institute of Technology, 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan.,Tokyo Tech World Research Hub Initiative (WRHI), Institute of Innovative Research, Tokyo Institute of Technology (Japan), 2-12-1 N1-32, O-okayama, Meguro-ku, Tokyo, 152-8550, Japan.,Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Bautzner Landstrasse 400, 01328, Dresden, Germany
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22
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Hixon AE, Powell BA. Plutonium environmental chemistry: mechanisms for the surface-mediated reduction of Pu(v/vi). ENVIRONMENTAL SCIENCE. PROCESSES & IMPACTS 2018; 20:1306-1322. [PMID: 30251720 DOI: 10.1039/c7em00369b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
In recent decades, interest in plutonium mobility has increased significantly due to the need of the United States, as well as other nations, to deal with commercial spent nuclear fuel, nuclear weapons disarmament, and the remediation of locations contaminated by nuclear weapons testing and production. Although there is a global consensus that geologic disposal is the safest existing approach to dealing with spent nuclear fuel and high-level nuclear waste, only a few nations are moving towards implementing a geologic repository due to technical and political barriers. Understanding the factors that affect the mobility of plutonium in the subsurface environment is critical to support the development of such repositories. The importance of redox chemistry in determining plutonium mobility cannot be understated. While Pu(iv) is generally assumed to be immobile in the subsurface environment due to sorption or precipitation, Pu(v) tends to be mobile due to its relatively low effective charge and weak complex formation. This review highlights one particularly important aspect of plutonium behaviour at the mineral-water interface-the concept of surface-mediated reduction, which describes the reduction of plutonium on a mineral surface. It provides a conceptual model for and evidence supporting or refuting each proposed mechanism for surface-mediated reduction including (i) radiolysis at the mineral surface, (ii) electron transfer via ferrous iron or manganese in the mineral structure, (iii) electron shuttling due to the semiconducting properties of the mineral, (iv) disproportionation of Pu(v), (v) facilitation by proton exchange sites, (vi) stabilisation of Pu(iv) due to the increased concentration gradient within the electrical double layer, and (vii) a Nernstian favourability of Pu(iv) surface complexes and colloids. It also provides new perspectives on future research directions.
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Affiliation(s)
- Amy E Hixon
- Department of Civil & Environmental Engineering & Earth Sciences, University of Notre Dame, Notre Dame, IN 46556, USA.
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23
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Tracy CL, Lang M, Zhang F, Park S, Palomares RI, Ewing RC. Review of recent experimental results on the behavior of actinide-bearing oxides and related materials in extreme environments. PROGRESS IN NUCLEAR ENERGY 2018. [DOI: 10.1016/j.pnucene.2016.09.012] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Dumas T, Guigue M, Moisy P, Colina-Ruiz R, Mustre de Leon J, Matara-Aho M, Solari PL, Monfort M, Moulin C, Beccia MR, Auwer CD. Experimental Speciation of Plutonium(IV) in Natural Seawater. ChemistrySelect 2018. [DOI: 10.1002/slct.201702762] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Thomas Dumas
- Commissariat à l'Energie Atomique; Nuclear Energy Division; Research Department on Mining and Fuel Recycling Processes; F-30207 Bagnols sur Cèze France
| | - Mireille Guigue
- Commissariat à l'Energie Atomique; Nuclear Energy Division; Research Department on Mining and Fuel Recycling Processes; F-30207 Bagnols sur Cèze France
| | - Philippe Moisy
- Commissariat à l'Energie Atomique; Nuclear Energy Division; Research Department on Mining and Fuel Recycling Processes; F-30207 Bagnols sur Cèze France
| | - Roberto Colina-Ruiz
- Université Côte d'Azur; CNRS; Institut de Chimie de Nice, UMR7272; F-06100 Nice France
- Departamento de Fisica Aplicada; Cinvestav-Merida; Carretera Antigua a Progreso km. 6, Merida Yucatań 97310 Mexico
| | - Jose Mustre de Leon
- Departamento de Fisica Aplicada; Cinvestav-Merida; Carretera Antigua a Progreso km. 6, Merida Yucatań 97310 Mexico
| | - Minja Matara-Aho
- Laboratory of Radiochemistry; Department of Chemistry; University of Helsinki; FI-00014 Finland
- Université Côte d'Azur; CNRS; Institut de Chimie de Nice, UMR7272; F-06100 Nice France
| | - Pier Lorenzo Solari
- Synchrotron SOLEIL L'Orme des Merisiers; Saint-Aubin; BP 48 F-91192 Gif-sur- Yvette Cedex France
| | - Marguerite Monfort
- Commissariat à l'Energie Atomique; Military application Division, DIF; F-91297 Arpajon France
| | - Christophe Moulin
- Commissariat à l'Energie Atomique; Military application Division, DIF; F-91297 Arpajon France
| | - Maria Rosa Beccia
- Université Côte d'Azur; CNRS; Institut de Chimie de Nice, UMR7272; F-06100 Nice France
| | - Christophe Den Auwer
- Université Côte d'Azur; CNRS; Institut de Chimie de Nice, UMR7272; F-06100 Nice France
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25
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Liu JB, Chen GP, Huang W, Clark DL, Schwarz WHE, Li J. Bonding trends across the series of tricarbonato-actinyl anions [(AnO 2)(CO 3) 3] 4- (An = U-Cm): the plutonium turn. Dalton Trans 2018; 46:2542-2550. [PMID: 28154870 DOI: 10.1039/c6dt03953g] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Actinyl-tricarbonato anions [(AnO2)(CO3)3]4- (An = U-Cm) in various environments were investigated using theoretical approaches of quantum-mechanics, molecular-mechanics and cluster-models. Cations and solvent molecules in the 2nd coordination sphere affect the equatorial An←Oeq bonds more than the axial An[triple bond, length as m-dash]Oax bonds. Common actinide contraction is found for calculated and experimental axial bond lengths of 92U to 94Pu, though no longer for 94Pu to 96Cm. The tendency of U to Pu forming actinyl(vi) species dwindles away toward Cm, which already features the preferred AnIII/LnIII oxidation state of the later actinides and all lanthanides. The well known change from d-type to typical U-Pu-Cm type and then to f-type behavior is labeled as the plutonium turn, a phenomenon that is caused by f-orbital energy-decrease and f-orbital localization with increase of both nuclear charge and oxidation state, and a non-linear variation of effective f-electron population across the actinide series. Both orbital and configuration mixing and occupation of antibonding 5f type orbitals increase, weakening the AnOax bonds and reducing the highest possible oxidation states of the later actinides.
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Affiliation(s)
- Jian-Biao Liu
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Shandong Normal University, Jinan 250014, China and Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China.
| | - Guo P Chen
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China.
| | - Wei Huang
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China.
| | - David L Clark
- Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA
| | - W H Eugen Schwarz
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China. and Physical and Theoretical Chemistry, University of Siegen, 57068, Germany
| | - Jun Li
- Department of Chemistry and Key Laboratory of Organic Optoelectronics & Molecular Engineering of the Ministry of Education, Tsinghua University, Beijing 100084, China. and Environmental Molecular Science Laboratory, Pacific Northwest National Laboratory, Richland, Washington 99352, USA
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26
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Vitova T, Pidchenko I, Fellhauer D, Pruessmann T, Bahl S, Dardenne K, Yokosawa T, Schimmelpfennig B, Altmaier M, Denecke M, Rothe J, Geckeis H. Exploring the electronic structure and speciation of aqueous and colloidal Pu with high energy resolution XANES and computations. Chem Commun (Camb) 2018; 54:12824-12827. [DOI: 10.1039/c8cc06889e] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pu L3 HR-XANES fingerprints loss of inversion symmetry: rising pre-edge (d,e), shorter A–B distance (d,e), split Pu d-DOS (e).
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27
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Dalodière E, Virot M, Dumas T, Guillaumont D, Illy MC, Berthon C, Guerin L, Rossberg A, Venault L, Moisy P, Nikitenko SI. Structural and magnetic susceptibility characterization of Pu(v) aqua ion using sonochemistry as a facile synthesis method. Inorg Chem Front 2018. [DOI: 10.1039/c7qi00389g] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The facile sonochemical preparation of pure, stable and concentrated Pu(v) aqueous solutions allowed to investigate its solvation environment and magnetic properties.
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28
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Calculations of interaction energy between certain components of large multimolecular complexes. Russ Chem Bull 2017. [DOI: 10.1007/s11172-017-1902-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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29
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Silver MA, Cary SK, Garza AJ, Baumbach RE, Arico AA, Galmin GA, Chen KW, Johnson JA, Wang JC, Clark RJ, Chemey A, Eaton TM, Marsh ML, Seidler K, Galley SS, van de Burgt L, Gray AL, Hobart DE, Hanson K, Van Cleve SM, Gendron F, Autschbach J, Scuseria GE, Maron L, Speldrich M, Kögerler P, Celis-Barros C, Páez-Hernández D, Arratia-Pérez R, Ruf M, Albrecht-Schmitt TE. Electronic Structure and Properties of Berkelium Iodates. J Am Chem Soc 2017; 139:13361-13375. [PMID: 28817775 DOI: 10.1021/jacs.7b05569] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The reaction of 249Bk(OH)4 with iodate under hydrothermal conditions results in the formation of Bk(IO3)3 as the major product with trace amounts of Bk(IO3)4 also crystallizing from the reaction mixture. The structure of Bk(IO3)3 consists of nine-coordinate BkIII cations that are bridged by iodate anions to yield layers that are isomorphous with those found for AmIII, CfIII, and with lanthanides that possess similar ionic radii. Bk(IO3)4 was expected to adopt the same structure as M(IO3)4 (M = Ce, Np, Pu), but instead parallels the structural chemistry of the smaller ZrIV cation. BkIII-O and BkIV-O bond lengths are shorter than anticipated and provide further support for a postcurium break in the actinide series. Photoluminescence and absorption spectra collected from single crystals of Bk(IO3)4 show evidence for doping with BkIII in these crystals. In addition to luminescence from BkIII in the Bk(IO3)4 crystals, a broad-band absorption feature is initially present that is similar to features observed in systems with intervalence charge transfer. However, the high-specific activity of 249Bk (t1/2 = 320 d) causes oxidation of BkIII and only BkIV is present after a few days with concomitant loss of both the BkIII luminescence and the broadband feature. The electronic structure of Bk(IO3)3 and Bk(IO3)4 were examined using a range of computational methods that include density functional theory both on clusters and on periodic structures, relativistic ab initio wave function calculations that incorporate spin-orbit coupling (CASSCF), and by a full-model Hamiltonian with spin-orbit coupling and Slater-Condon parameters (CONDON). Some of these methods provide evidence for an asymmetric ground state present in BkIV that does not strictly adhere to Russel-Saunders coupling and Hund's Rule even though it possesses a half-filled 5f 7 shell. Multiple factors contribute to the asymmetry that include 5f electrons being present in microstates that are not solely spin up, spin-orbit coupling induced mixing of low-lying excited states with the ground state, and covalency in the BkIV-O bonds that distributes the 5f electrons onto the ligands. These factors are absent or diminished in other f7 ions such as GdIII or CmIII.
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Affiliation(s)
- Mark A Silver
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Samantha K Cary
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Alejandro J Garza
- Department of Chemistry, Rice University , Houston, Texas 77251, United States
| | - Ryan E Baumbach
- National High Magnetic Field Laboratory , Tallahassee, Florida 32310, United States
| | - Alexandra A Arico
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Gregory A Galmin
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Kuan-Wen Chen
- National High Magnetic Field Laboratory , Tallahassee, Florida 32310, United States
| | - Jason A Johnson
- Environmental Health and Safety, Florida State University , Tallahassee, Florida 32306, United States
| | - Jamie C Wang
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Ronald J Clark
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Alexander Chemey
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Teresa M Eaton
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Matthew L Marsh
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Kevin Seidler
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Shane S Galley
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Lambertus van de Burgt
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Ashley L Gray
- Environmental Health and Safety, Florida State University , Tallahassee, Florida 32306, United States
| | - David E Hobart
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Kenneth Hanson
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
| | - Shelley M Van Cleve
- Nuclear Materials Processing Group, Oak Ridge National Laboratory , One Bethel Valley Road, Oak Ridge, Tennessee 37830, United States
| | - Frédéric Gendron
- Department of Chemistry, University at Buffalo, State University of New York , Buffalo, New York 14260, United States
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York , Buffalo, New York 14260, United States
| | - Gustavo E Scuseria
- Department of Chemistry, Rice University , Houston, Texas 77251, United States
| | - Laurent Maron
- Laboratorie de Physique et Chimie des Nano-objets, Institut National des Sciences Appliquées , 31077 Toulouse Cedex 4, France
| | - Manfred Speldrich
- Institut für Anorganische Chemie, RWTH Aachen University , D-52074 Aachen, Germany
| | - Paul Kögerler
- Institut für Anorganische Chemie, RWTH Aachen University , D-52074 Aachen, Germany
| | - Cristian Celis-Barros
- Centro de Nanociencias Aplicadas, Facultad de Ciencias Exactas, Universidad Andrés Bello , República 275, Santiago, Chile
| | - Dayán Páez-Hernández
- Centro de Nanociencias Aplicadas, Facultad de Ciencias Exactas, Universidad Andrés Bello , República 275, Santiago, Chile
| | - Ramiro Arratia-Pérez
- Centro de Nanociencias Aplicadas, Facultad de Ciencias Exactas, Universidad Andrés Bello , República 275, Santiago, Chile
| | - Michael Ruf
- Bruker AXS , 5465 East Cheryl Parkway, Madison, Wisconsin 53711, United States
| | - Thomas E Albrecht-Schmitt
- Department of Chemistry and Biochemistry, Florida State University , Tallahassee, Florida 32306, United States
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Kaplan U, Amayri S, Drebert J, Rossberg A, Grolimund D, Reich T. Geochemical Interactions of Plutonium with Opalinus Clay Studied by Spatially Resolved Synchrotron Radiation Techniques. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2017; 51:7892-7902. [PMID: 28558201 DOI: 10.1021/acs.est.6b06528] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
Plutonium plays an important role within nuclear waste materials because of its long half-life and high radiotoxicity. The aim of this study was to investigate with high spatial resolution the reactivity of the more oxidized forms of Pu(V,VI) within Opalinus Clay (OPA) rock, a heterogeneous, natural argillaceous rock considered as a potential repository host. A combination of synchrotron based X-ray microprobe and bulk techniques was used to study the spatial distribution and molecular speciation of Pu within OPA after diffusion and sorption processes. Microscopic chemical images revealed a pronounced impact of geochemical heterogeneities concerning the reactivity of the natural barrier material. Spatially resolved X-ray absorption spectroscopy documented a reduction of the highly soluble Pu(V,VI) to the less mobile Pu(IV) within the argillaceous rock material, while bulk investigations showed second-shell scattering contributions, indicating an inner-sphere sorption of Pu on OPA components. Microdiffraction imaging identified the clay mineral kaolinite to play a key role in the immobilization of the reduced Pu. The findings provide strong evidence that reduction and immobilization do not occur as linked processes on a single reactive phase but as decoupled, subsequent, and spatially separated reactions involving different phases of the OPA.
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Affiliation(s)
- Ugras Kaplan
- Johannes Gutenberg-Universität Mainz , Institute of Nuclear Chemistry, Fritz-Strassmann-Weg 2, 55128 Mainz, Germany
| | - Samer Amayri
- Johannes Gutenberg-Universität Mainz , Institute of Nuclear Chemistry, Fritz-Strassmann-Weg 2, 55128 Mainz, Germany
| | - Jakob Drebert
- Johannes Gutenberg-Universität Mainz , Institute of Nuclear Chemistry, Fritz-Strassmann-Weg 2, 55128 Mainz, Germany
| | - Andre Rossberg
- Helmholtz-Zentrum Dresden-Rossendorf (HZDR) , Institute of Resource Ecology, Bautzner Landstraße 400, 01328 Dresden, Germany
| | - Daniel Grolimund
- Paul Scherrer Institute , Swiss Light Source, microXAS Beamline Project, 5232 Villigen PSI, Switzerland
| | - Tobias Reich
- Johannes Gutenberg-Universität Mainz , Institute of Nuclear Chemistry, Fritz-Strassmann-Weg 2, 55128 Mainz, Germany
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31
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Li P, Niu W, Gao T. Systematic analysis of structural and topological properties: new insights into PuO2(H2O)n2+ (n = 1–6) complexes in the gas phase. RSC Adv 2017. [DOI: 10.1039/c6ra27087e] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
In this study, the equilibrium, electronic structures, bonding and topological properties of PuO2(H2O)n2+ (n = 1–6) complexes were systematically investigated.
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Affiliation(s)
- Peng Li
- College of Physics and Electronic Engineering
- Shanxi University
- Taiyuan
- China
| | - Wenxia Niu
- Department of Physics
- Taiyuan Normal University
- Taiyuan
- China
| | - Tao Gao
- Institute of Atomic and Molecular Physics
- Sichuan University
- Chengdu
- China
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32
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Autillo M, Guerin L, Guillaumont D, Moisy P, Bolvin H, Berthon C. Paramagnetism of Aqueous Actinide Cations. Part II: Theoretical Aspects and New Measurements on An(IV). Inorg Chem 2016; 55:12149-12157. [DOI: 10.1021/acs.inorgchem.6b01449] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Matthieu Autillo
- Nuclear Energy Division, RadioChemistry & Processes Department, CEA, Service de modélisation et de chimie des procédés et de Séparation, SMCS LILA, F-30207 Bagnols sur Cèze, France
| | - Laetitia Guerin
- Nuclear Energy Division, RadioChemistry & Processes Department, CEA, Service de modélisation et de chimie des procédés et de Séparation, SMCS LILA, F-30207 Bagnols sur Cèze, France
| | - Dominique Guillaumont
- Nuclear Energy Division, RadioChemistry & Processes Department, CEA, Service de modélisation et de chimie des procédés et de Séparation, SMCS LILA, F-30207 Bagnols sur Cèze, France
| | - Philippe Moisy
- Nuclear Energy Division, RadioChemistry & Processes Department, CEA, Service de modélisation et de chimie des procédés et de Séparation, SMCS LILA, F-30207 Bagnols sur Cèze, France
| | - Hélène Bolvin
- Laboratoire
de Physique et de Chimie Quantiques, Université Toulouse 3, 118 Route
de Narbonne, 31062 Toulouse, France
| | - Claude Berthon
- Nuclear Energy Division, RadioChemistry & Processes Department, CEA, Service de modélisation et de chimie des procédés et de Séparation, SMCS LILA, F-30207 Bagnols sur Cèze, France
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33
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Hellebrandt S, Lee SS, Knope KE, Lussier AJ, Stubbs JE, Eng PJ, Soderholm L, Fenter P, Schmidt M. A Comparison of Adsorption, Reduction, and Polymerization of the Plutonyl(VI) and Uranyl(VI) Ions from Solution onto the Muscovite Basal Plane. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2016; 32:10473-10482. [PMID: 27678146 DOI: 10.1021/acs.langmuir.6b02513] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/05/2023]
Abstract
X-ray scattering techniques [in situ resonant anomalous X-ray reflectivity (RAXR) and specular crystal truncation rods (CTR)] were used to compare muscovite (001) surfaces in contact with solutions containing either 0.1 mM plutonyl(VI) or 1 mM uranyl(VI) at pH = 3.2 ± 0.2, I(NaCl) = 0.1 M, as well as in situ grazing-incidence X-ray absorption near-edge structure (GI XANES) spectroscopy and ex situ alpha spectrometry. Details of the surface coverage are found to be very different. In the case of Pu, alpha spectrometry finds a surface coverage of 8.3 Pu/AUC (AUC = 46.72 Å2, the unit cell area), far in excess of the 0.5 Pu/AUC expected for ionic adsorption of PuO22+. GI XANES results show that Pu is predominantly tetravalent on the surface, and the CTR/RAXR results show that the adsorbed Pu is broadly distributed. Taken together with previous findings, the results are consistent with adsorption of Pu in the form of Pu(IV)-oxo-nanoparticles. In contrast, uranyl shows only negligible, if any, adsorption according to all methods applied. These results are discussed and compared within the context of known Pu and U redox chemistry.
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Affiliation(s)
- Stefan Hellebrandt
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf , Dresden 01314, Germany
| | - Sang Soo Lee
- Chemical Sciences and Engineering Division, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | - Karah E Knope
- Chemical Sciences and Engineering Division, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | - Aaron J Lussier
- Department of Civil & Environmental Engineering & Earth Sciences, University of Notre Dame , Notre Dame, Indiana 46556, United States
| | - Joanne E Stubbs
- Center for Advanced Radiation Sources, University of Chicago , Chicago, Illinois 60637, United States
| | - Peter J Eng
- Center for Advanced Radiation Sources, University of Chicago , Chicago, Illinois 60637, United States
| | - L Soderholm
- Chemical Sciences and Engineering Division, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | - Paul Fenter
- Chemical Sciences and Engineering Division, Argonne National Laboratory , Argonne, Illinois 60439, United States
| | - Moritz Schmidt
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf , Dresden 01314, Germany
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Ikeda-Ohno A, Shahin LM, Howard DL, Collins RN, Payne TE, Johansen MP. Fate of Plutonium at a Former Nuclear Testing Site in Australia. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2016; 50:9098-9104. [PMID: 27548999 DOI: 10.1021/acs.est.6b01864] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
A series of the British nuclear tests conducted on mainland Australia between 1953 and 1963 dispersed long-lived radioactivity and nuclear weapons debris including plutonium (Pu), the legacy of which is a long-lasting source of radioactive contamination to the surrounding biosphere. A reliable assessment of the environmental impact of Pu contaminants and their implications for human health requires an understanding of their physical/chemical characteristics at the molecular scale. In this study, we identify the chemical form of the Pu remaining in the local soils at the Taranaki site, one of the former nuclear testing sites at Maralinga, South Australia. We herein reveal direct spectroscopic evidence that the Pu legacy remaining at the site exists as particulates of Pu(IV) oxyhydroxide compounds, a very concentrated and low-soluble form of Pu, which will serve as ongoing radioactive sources far into the future. Gamma-ray spectrometry and X-ray fluorescence analysis on a collected Pu particle indicate that the Pu in the particle originated in the so-called "Minor trials" that involved the dispersal of weapon components by highly explosive chemicals, not in the nuclear explosion tests called "Major trials". A comprehensive analysis of the data acquired from X-ray fluorescence mapping (XFM), X-ray absorption near-edge structure (XANES), and extended X-ray absorption fine structure (EXAFS) suggests that the collected Pu particle forms a "core-shell" structure with the Pu(IV) oxyhydroxide core surrounded by an external layer containing Ca, Fe, and U, which further helps us to deduce a possible scenario of the physical/chemical transformation of the original Pu materials dispersed in the semiarid environment at Maralinga more than 50 years ago. These findings also highlight the importance of the comprehensive physical/chemical characterization of Pu contaminants for reliable environmental- and radiotoxicological assessment.
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Affiliation(s)
- Atsushi Ikeda-Ohno
- Helmholtz-Zentrum Dresden-Rossendorf, Institute of Resource Ecology , Bautzner Landstrasse 400, 01328 Dresden, Germany
- Institute for Environmental Research, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia
- School of Civil and Environmental Engineering, The University of New South Wales , Sydney, New South Wales 2052, Australia
| | - Lida Mokhber Shahin
- Institute for Environmental Research, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia
| | - Daryl L Howard
- Australian Synchrotron, 800 Blackburn Road, Clayton, Victoria 3168, Australia
| | - Richard N Collins
- School of Civil and Environmental Engineering, The University of New South Wales , Sydney, New South Wales 2052, Australia
| | - Timothy E Payne
- Institute for Environmental Research, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia
| | - Mathew P Johansen
- Institute for Environmental Research, Australian Nuclear Science and Technology Organisation, Locked Bag 2001, Kirrawee DC, New South Wales 2232, Australia
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35
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Zhang L, Zhou J, Zhang J, Su J, Zhang S, Chen N, Jia Y, Li J, Wang Y, Wang JQ. Extraction of local coordination structure in a low-concentration uranyl system by XANES. JOURNAL OF SYNCHROTRON RADIATION 2016; 23:758-768. [PMID: 27140156 DOI: 10.1107/s1600577516001910] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2015] [Accepted: 02/01/2016] [Indexed: 06/05/2023]
Abstract
Obtaining structural information of uranyl species at an atomic/molecular scale is a critical step to control and predict their physical and chemical properties. To obtain such information, experimental and theoretical L3-edge X-ray absorption near-edge structure (XANES) spectra of uranium were studied systematically for uranyl complexes. It was demonstrated that the bond lengths (R) in the uranyl species and relative energy positions (ΔE) of the XANES were determined as follows: ΔE1 = 168.3/R(U-Oax)(2) - 38.5 (for the axial plane) and ΔE2 = 428.4/R(U-Oeq)(2) - 37.1 (for the equatorial plane). These formulae could be used to directly extract the distances between the uranium absorber and oxygen ligand atoms in the axial and equatorial planes of uranyl ions based on the U L3-edge XANES experimental data. In addition, the relative weights were estimated for each configuration derived from the water molecule and nitrate ligand based on the obtained average equatorial coordination bond lengths in a series of uranyl nitrate complexes with progressively varied nitrate concentrations. Results obtained from XANES analysis were identical to that from extended X-ray absorption fine-structure (EXAFS) analysis. XANES analysis is applicable to ubiquitous uranyl-ligand complexes, such as the uranyl-carbonate complex. Most importantly, the XANES research method could be extended to low-concentration uranyl systems, as indicated by the results of the uranyl-amidoximate complex (∼40 p.p.m. uranium). Quantitative XANES analysis, a reliable and straightforward method, provides a simplified approach applied to the structural chemistry of actinides.
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Affiliation(s)
- Linjuan Zhang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
| | - Jing Zhou
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
| | - Jianyong Zhang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
| | - Jing Su
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
| | - Shuo Zhang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
| | - Ning Chen
- Canadian Light Source, Saskatoon, Saskatchewan, Canada S7N 2V3
| | - Yunpeng Jia
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
| | - Jiong Li
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
| | - Yu Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
| | - Jian Qiang Wang
- Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201800, People's Republic of China
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Banik NL, Vallet V, Réal F, Belmecheri RM, Schimmelpfennig B, Rothe J, Marsac R, Lindqvist-Reis P, Walther C, Denecke MA, Marquardt CM. First structural characterization of Pa(iv) in aqueous solution and quantum chemical investigations of the tetravalent actinides up to Bk(IV): the evidence of a curium break. Dalton Trans 2016; 45:453-7. [PMID: 26465740 DOI: 10.1039/c5dt03560k] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
More than a century after its discovery the structure of the Pa(4+) ion in acidic aqueous solution has been investigated for the first time experimentally and by quantum chemistry. The combined results of EXAFS data and quantum chemically optimized structures suggest that the Pa(4+) aqua ion has an average of nine water molecules in its first hydration sphere at a mean Pa-O distance of 2.43 Å. The data available for the early tetravalent actinide (An) elements from Th(4+) to Bk(4+) show that the An-O bonds have a pronounced electrostatic character, with bond distances following the same monotonic decreasing trend as the An(4+) ionic radii, with a decrease of the hydration number from nine to eight for the heaviest ions Cm(4+) and Bk(4+). Being the first open-shell tetravalent actinide, Pa(4+) features a coordination chemistry very similar to its successors. The electronic configuration of all open-shell systems corresponds to occupation of the valence 5f orbitals, without contribution from the 6d orbitals. Our results thus demonstrate that Pa(iv) resembles its early actinide neighbors.
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Affiliation(s)
- Nidhu lal Banik
- Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany.
| | - Valérie Vallet
- Laboratoire PhLAM, UMR-CNRS 8523, Université Lille 1 (Sciences et Technologies), F-59655 Villeneuve d'Ascq, France
| | - Florent Réal
- Laboratoire PhLAM, UMR-CNRS 8523, Université Lille 1 (Sciences et Technologies), F-59655 Villeneuve d'Ascq, France
| | - Réda Mohamed Belmecheri
- Laboratoire de Thermodynamique et Modélisation Moléculaire, Faculté de Chimie, USTHB BP 32 El-Alia, 16111 Bab-Ezzouar, Algeria
| | - Bernd Schimmelpfennig
- Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany.
| | - Jörg Rothe
- Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany.
| | - Rémi Marsac
- Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany.
| | - Patric Lindqvist-Reis
- Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany.
| | - Clemens Walther
- Institut für Radioökologie und Strahlenschutz, Leibniz Universität Hannover, Hannover, Germany
| | - Melissa A Denecke
- Dalton Nuclear Institute, The University of Manchester, Manchester, UK
| | - Christian M Marquardt
- Institut für Nukleare Entsorgung, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany.
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37
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Du J, Sun X, Jiang G. Exploring the Interaction Natures in Plutonyl (VI) Complexes with Topological Analyses of Electron Density. Int J Mol Sci 2016; 17:414. [PMID: 27077844 PMCID: PMC4848887 DOI: 10.3390/ijms17040414] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Revised: 01/13/2016] [Accepted: 01/15/2016] [Indexed: 12/23/2022] Open
Abstract
The interaction natures between Pu and different ligands in several plutonyl (VI) complexes are investigated by performing topological analyses of electron density. The geometrical structures in both gaseous and aqueous phases are obtained with B3LYP functional, and are generally in agreement with available theoretical and experimental results when combined with all-electron segmented all-electron relativistic contracted (SARC) basis set. The Pu- O y l bond orders show significant linear dependence on bond length and the charge of oxygen atoms in plutonyl moiety. The closed-shell interactions were identified for Pu-Ligand bonds in most complexes with quantum theory of atoms in molecules (QTAIM) analyses. Meanwhile, we found that some Pu-Ligand bonds, like Pu-OH(-), show weak covalent. The interactive nature of Pu-ligand bonds were revealed based on the interaction quantum atom (IQA) energy decomposition approach, and our results indicate that all Pu-Ligand interactions is dominated by the electrostatic attraction interaction as expected. Meanwhile it is also important to note that the quantum mechanical exchange-correlation contributions can not be ignored. By means of the non-covalent interaction (NCI) approach it has been found that some weak and repulsion interactions existed in plutonyl(VI) complexes, which can not be distinguished by QTAIM, can be successfully identified.
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Affiliation(s)
- Jiguang Du
- College of Physical Science and Technology, Sichuan University, Chengdu 610064, China.
| | - Xiyuan Sun
- College of Sciences, Sichuan Agricultural University, Ya'an 625014, China.
| | - Gang Jiang
- Institutes of Atomic and Molecular Physics, Sichuan University, Chengdu 610065, China.
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38
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Smith AL, Martin P, Prieur D, Scheinost AC, Raison PE, Cheetham AK, Konings RJM. Structural Properties and Charge Distribution of the Sodium Uranium, Neptunium, and Plutonium Ternary Oxides: A Combined X-ray Diffraction and XANES Study. Inorg Chem 2016; 55:1569-79. [DOI: 10.1021/acs.inorgchem.5b02476] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Anna L. Smith
- European Commission, Joint Research Centre
(JRC), Institute for Transuranium Elements (ITU), P.O. Box 2340, D-76125 Karlsruhe, Germany
- Department of Materials
Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
| | - Philippe Martin
- CEA, DEN, DEC, CEN Cadarache, 13108 St. Paul Lez Durance, France
| | - Damien Prieur
- European Commission, Joint Research Centre
(JRC), Institute for Transuranium Elements (ITU), P.O. Box 2340, D-76125 Karlsruhe, Germany
| | - Andreas C. Scheinost
- Helmholtz Zentrum Dresden Rossendorf (HZDR), Institute of Resource Ecology, P.O.
Box 10119, 01314 Dresden, Germany
| | - Philippe E. Raison
- European Commission, Joint Research Centre
(JRC), Institute for Transuranium Elements (ITU), P.O. Box 2340, D-76125 Karlsruhe, Germany
| | - Anthony K. Cheetham
- Department of Materials
Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge CB3 0FS, United Kingdom
| | - Rudy J. M. Konings
- European Commission, Joint Research Centre
(JRC), Institute for Transuranium Elements (ITU), P.O. Box 2340, D-76125 Karlsruhe, Germany
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39
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Structural investigations of PuIII phosphate by X-ray diffraction, MAS-NMR and XANES spectroscopy. J SOLID STATE CHEM 2015. [DOI: 10.1016/j.jssc.2015.07.002] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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40
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Shi WQ, Yuan LY, Wang CZ, Wang L, Mei L, Xiao CL, Zhang L, Li ZJ, Zhao YL, Chai ZF. Exploring actinide materials through synchrotron radiation techniques. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2014; 26:7807-7848. [PMID: 25169914 DOI: 10.1002/adma.201304323] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/28/2013] [Revised: 04/24/2014] [Indexed: 06/03/2023]
Abstract
Synchrotron radiation (SR) based techniques have been utilized with increasing frequency in the past decade to explore the brilliant and challenging sciences of actinide-based materials. This trend is partially driven by the basic needs for multi-scale actinide speciation and bonding information and also the realistic needs for nuclear energy research. In this review, recent research progresses on actinide related materials by means of various SR techniques were selectively highlighted and summarized, with the emphasis on X-ray absorption spectroscopy, X-ray diffraction and scattering spectroscopy, which are powerful tools to characterize actinide materials. In addition, advanced SR techniques for exploring future advanced nuclear fuel cycles dealing with actinides are illustrated as well.
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Affiliation(s)
- Wei-Qun Shi
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology, Institute of High Enegy Physics, Chinese Academy of Sciences, Beijing, 100049, China
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41
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Wu QY, Lan JH, Wang CZ, Zhao YL, Chai ZF, Shi WQ. Understanding the interactions of neptunium and plutonium ions with graphene oxide: scalar-relativistic DFT investigations. J Phys Chem A 2014; 118:10273-80. [PMID: 25302669 DOI: 10.1021/jp5069945] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Due to the vast application potential of graphene oxide (GO)-based materials in nuclear waste processing, it is of pivotal importance to investigate the interaction mechanisms between actinide cations such as Np(V) and Pu(IV, VI) ions and GO. In this work, we have considered four types of GOs modified by hydroxyl, carboxyl, and carbonyl groups at the edge and epoxy group on the surface, respectively. The structures, bonding nature, and binding energies of Np(V) and Pu(IV, VI) complexes with GOs have been investigated systematically using scalar-relativistic density functional theory (DFT). Geometries and harmonic frequencies suggest that Pu(IV) ions coordinate more easily with GOs compared to Np(V) and Pu(VI) ions. NBO and electron density analyses reveal that the coordination bond between Pu(IV) ions and GO possesses more covalency, whereas for Np(V) and Pu(VI) ions electrostatic interaction dominates the An-OG bond. The binding energies in aqueous solution reveal that the adsorption abilities of all GOs for actinide ions follow the order of Pu(IV) > Pu(VI) > Np(V), which is in excellent agreement with experimental observations. It is expected that this study can provide useful information for developing more efficient GO-based materials for radioactive wastewater treatment.
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Affiliation(s)
- Qun-Yan Wu
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory For Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, China
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42
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Xiao CL, Wu QY, Wang CZ, Zhao YL, Chai ZF, Shi WQ. Quantum chemistry study of uranium(VI), neptunium(V), and plutonium(IV,VI) complexes with preorganized tetradentate phenanthrolineamide ligands. Inorg Chem 2014; 53:10846-53. [PMID: 25268674 DOI: 10.1021/ic500816z] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The preorganized tetradentate 2,9-diamido-1,10-phenanthroline ligand with hard-soft donors combined in the same molecule has been found to possess high selectivity toward actinides in an acidic aqueous solution. In this work, density functional theory (DFT) coupled with the quasi-relativistic small-core pseudopotential method was used to investigate the structures, bonding nature, and thermodynamic behavior of uranium(VI), neptunium(V), and plutonium(IV,VI) with phenanthrolineamides. Theoretical optimization shows that Et-Tol-DAPhen and Et-Et-DAPhen ligands are both coordinated with actinides in a tetradentate chelating mode through two N donors of the phenanthroline moiety and two O donors of the amide moieties. It is found that [AnO2L(NO3)](n+) (An = U(VI), Np(V), Pu(VI); n = 0, 1) and PuL(NO3)4 are the main 1:1 complexes. With respect to 1:2 complexes, the reaction [Pu(H2O)9](4+)(aq) + 2L(org) + 2NO3(-)(aq) → [PuL2(NO3)2](2+)(org) + 9H2O(aq) might be another probable extraction mechanism for Pu(IV). From the viewpoint of energy, the phenanthrolineamides extract actinides in the order of Pu(IV) > U(VI) > Pu(VI) > Np(V), which agrees well with the experimental results. Additionally, all of the thermodynamic reactions are more energetically favorable for the Et-Tol-DAPhen ligand than the Et-Et-DAPhen ligand, indicating that substitution of one ethyl group with one tolyl group can enhance the complexation abilities toward actinide cations (anomalous aryl strengthening).
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Affiliation(s)
- Cheng-Liang Xiao
- Key Laboratory of Nuclear Radiation and Nuclear Energy Technology and Key Laboratory for Biomedical Effects of Nanomaterials and Nanosafety, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, China
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43
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Boggs MA, Mason H, Arai Y, Powell BA, Kersting AB, Zavarin M. Nuclear Magnetic Resonance Spectroscopy of Aqueous Plutonium(IV) Desferrioxamine B Complexes. Eur J Inorg Chem 2014. [DOI: 10.1002/ejic.201402105] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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44
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Schmidt M, Lee SS, Wilson RE, Knope KE, Bellucci F, Eng PJ, Stubbs JE, Soderholm L, Fenter P. Surface-mediated formation of Pu(IV) nanoparticles at the muscovite-electrolyte interface. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2013; 47:14178-14184. [PMID: 24266655 DOI: 10.1021/es4037258] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The formation of Pu(IV)-oxo-nanoparticles from Pu(III) solutions by a surface-enhanced redox/polymerization reaction at the muscovite (001) basal plane is reported, with a continuous increase in plutonium coverage observed in situ over several hours. The sorbed Pu extends >70 Å from the surface with a maximum concentration at 10.5 Å and a total coverage of >9 Pu atoms per unit cell area of muscovite (0.77 μg Pu/cm(2)) (determined independently by in situ resonant anomalous X-ray reflectivity and by ex-situ alpha-spectrometry). The presence of discrete nanoparticles is confirmed by high resolution atomic force microscopy. We propose that the formation of these Pu(IV) nanoparticles from an otherwise stable Pu(III) solution can be explained by the combination of a highly concentrated interfacial Pu-ion species, the Pu(III)-Pu(IV) redox equilibrium, and the strong proclivity of tetravalent Pu to hydrolyze and form polymeric species. These results are the first direct observation of such behavior of plutonium on a naturally occurring mineral, providing insights into understanding the environmental transport of plutonium and other contaminants capable of similar redox/polymerization reactions.
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Affiliation(s)
- Moritz Schmidt
- Chemical Sciences and Engineering Division, Argonne National Laboratory , Argonne , Illinois 60439, United States
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45
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Odoh SO, Bylaska EJ, de Jong WA. Coordination and hydrolysis of plutonium ions in aqueous solution using Car-Parrinello molecular dynamics free energy simulations. J Phys Chem A 2013; 117:12256-67. [PMID: 24168210 DOI: 10.1021/jp4096248] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Car-Parrinello molecular dynamics (CPMD) simulations have been used to examine the hydration structures, coordination energetics, and the first hydrolysis constants of Pu(3+), Pu(4+), PuO2(+), and PuO2(2+) ions in aqueous solution at 300 K. The coordination numbers and structural properties of the first shell of these ions are in good agreement with available experimental estimates. The hexavalent PuO2(2+) species is coordinated to five aquo ligands while the pentavalent PuO2(+) complex is coordinated to four aquo ligands. The Pu(3+) and Pu(4+) ions are both coordinated to eight water molecules. The first hydrolysis constants obtained for Pu(3+) and PuO2(2+) are 6.65 and 5.70, respectively, all within 0.3 pH unit of the experimental values (6.90 and 5.50, respectively). The hydrolysis constant of Pu(4+), 0.17, disagrees with the value of -0.60 in the most recent update of the Nuclear Energy Agency Thermochemical Database (NEA-TDB) but supports recent experimental findings. The hydrolysis constant of PuO2(+), 9.51, supports the experimental results of Bennett et al. [Radiochim. Acta 1992, 56, 15]. A correlation between the pKa of the first hydrolysis reaction and the effective charge of the plutonium center was found.
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Affiliation(s)
- Samuel O Odoh
- Environmental and Molecular Science Laboratory, Pacific Northwest National Laboratory , Richland, Washington 99352, United States
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46
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Jin GB, Hu YJ, Bellott B, Skanthakumar S, Haire RG, Soderholm L, Ibers JA. Reinvestigation of Np2Se5: a clear divergence from Th2S5 and Th2Se5 in chalcogen-chalcogen and metal-chalcogen interactions. Inorg Chem 2013; 52:9111-8. [PMID: 23883193 DOI: 10.1021/ic401384t] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Single crystals of Np2Se5 have been prepared through the reactions of Np and Se at 1223 K in an Sb2Se3 flux. The structure of Np2Se5, which has been characterized by single-crystal X-ray diffraction methods, crystallizes in the tetragonal space group P42/nmc. The crystallographic unit cell includes one unique Np and two Se positions. Se(1) atoms form one-dimensional infinite chains along the a and b axes with alternating intermediate Se-Se distances of 2.6489 (8) and 2.7999 (8) Å, whereas Se(2) is a discrete Se(2-) anion. Each Np is coordinated to 10 Se atoms and every NpSe10 polyhedron shares faces, edges, or vertices with 14 other identical metal polyhedra to form a complex three-dimensional structure. Np LIII-edge X-ray Absorption Near Edge Structure (XANES) measurements show a clear shift in edge position to higher energies for Np2Se5 compared to Np3Se5 (Np(3+)2Np(4+)Se(2-)5). Magnetic susceptibility measurements indicate that Np2Se5 undergoes a ferromagnetic-type ordering below 18(1) K. Above the transition temperature, Np2Se5 behaves as a paramagnet with an effective moment of 1.98(5) μB/Np, given by a best fit of susceptibilities to a modified Curie-Weiss law over the temperature range 50-320 K.
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Affiliation(s)
- Geng Bang Jin
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States.
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47
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Cross JN, Duncan PM, Villa EM, Polinski MJ, Babo JM, Alekseev EV, Booth CH, Albrecht-Schmitt TE. From Yellow to Black: Dramatic Changes between Cerium(IV) and Plutonium(IV) Molybdates. J Am Chem Soc 2013; 135:2769-75. [DOI: 10.1021/ja311910h] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Justin N. Cross
- Department of Chemistry and Biochemistry and Department of Civil
Engineering and Geological Sciences, University of Notre Dame, 156 Fitzpatrick Hall, University of Notre
Dame, Notre Dame, Indiana 46556, United States
| | - Patrick M. Duncan
- Department of Chemistry and Biochemistry and Department of Civil
Engineering and Geological Sciences, University of Notre Dame, 156 Fitzpatrick Hall, University of Notre
Dame, Notre Dame, Indiana 46556, United States
| | - Eric M. Villa
- Department of Chemistry and Biochemistry and Department of Civil
Engineering and Geological Sciences, University of Notre Dame, 156 Fitzpatrick Hall, University of Notre
Dame, Notre Dame, Indiana 46556, United States
| | - Matthew J. Polinski
- Department of Chemistry and Biochemistry and Department of Civil
Engineering and Geological Sciences, University of Notre Dame, 156 Fitzpatrick Hall, University of Notre
Dame, Notre Dame, Indiana 46556, United States
| | - Jean-Marie Babo
- Department of Chemistry and Biochemistry and Department of Civil
Engineering and Geological Sciences, University of Notre Dame, 156 Fitzpatrick Hall, University of Notre
Dame, Notre Dame, Indiana 46556, United States
| | - Evgeny V. Alekseev
- Institute
for Energy and Climate Research (IEK-6), Forschungszentrum Jülich GmbH, 52428 Jülich,
Germany
- Institut für Kristallographie, RWTH Aachen University, 52066 Aachen, Germany
| | - Corwin H. Booth
- Chemical Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, United
States
| | - Thomas E. Albrecht-Schmitt
- Department of Chemistry and Biochemistry, Florida State University, 95 Chieftan Way, 310 DLC,
Tallahassee, Florida 32306-4390, United States
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48
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Walther C, Denecke MA. Actinide Colloids and Particles of Environmental Concern. Chem Rev 2013; 113:995-1015. [DOI: 10.1021/cr300343c] [Citation(s) in RCA: 119] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Clemens Walther
- Institute for Radioecology and
Radiation Protection, Leibniz University Hannover, Herrenhäuser Strasse 2, D-30419 Hannover, Germany
| | - Melissa A. Denecke
- Institute for Nuclear Waste
Disposal, Karlsruhe Institute of Technology, P.O. Box 3640, D-76021 Karlsruhe, Germany
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49
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Ekberg C, Larsson K, Skarnemark G, Ödegaard-Jensen A, Persson I. The structure of plutonium(iv) oxide as hydrolysed clusters in aqueous suspensions. Dalton Trans 2013; 42:2035-40. [DOI: 10.1039/c2dt32185h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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50
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Knope KE, Soderholm L. Solution and Solid-State Structural Chemistry of Actinide Hydrates and Their Hydrolysis and Condensation Products. Chem Rev 2012; 113:944-94. [DOI: 10.1021/cr300212f] [Citation(s) in RCA: 269] [Impact Index Per Article: 22.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Karah E. Knope
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439,
United States
| | - L. Soderholm
- Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439,
United States
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