1
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Hastings AM, Herrera S, Harris S, Parsons-Davis T, Pascall AJ, Shusterman JA. Preparation of monodisperse cerium oxide particle suspensions from a tetravalent precursor. Dalton Trans 2024; 53:7376-7383. [PMID: 38584573 DOI: 10.1039/d4dt00146j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Cerium oxide particles are a unique material that enables studying the intersection of metal oxides, f-elements, and nanomaterials. Distinct from diverse applications in catalysis, energy, and medicine, cerium possesses additional influence as a non-radioactive actinide surrogate. Herein, we present a synthesis for sub-micron cerium particles using hexamethylenetetramine and ammonium hydroxide as precipitating agents with a CeIV precursor. The combinatorial homogeneous precipitation approach yields monodisperse and moderately-stable CeO2 particle suspensions in ethanol, as determined by powder X-ray diffraction, scanning electron microscopy, dynamic light scattering, and zeta potential measurements. Various additives may be used to moderate and manipulate the surface charge of the particles. Proof-of-concept electrophoretic deposition of the particles produces a uniform layer of CeO2 on graphite. The synthesis and suspension properties are developed as a methodology towards future controlled actinide hydrolysis and film deposition.
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Affiliation(s)
- Ashley M Hastings
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
| | - Susana Herrera
- Florida International University, Miami, FL 33199, USA
- Pacific Northwest National Laboratory, Richland, WA 99352, USA
| | - Sharee Harris
- Materials Science Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - Tashi Parsons-Davis
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
| | - Andrew J Pascall
- Materials Engineering Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA
| | - Jennifer A Shusterman
- Nuclear and Chemical Sciences Division, Lawrence Livermore National Laboratory, Livermore, CA 94550, USA.
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2
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Margate J, Virot M, Dumas T, Jégou C, Chave T, Cot-Auriol M, Alves A, Nikitenko SI. Micrometric drilling of (meta-)studtite square platelets formed by pseudomorphic conversion of UO 2 under high-frequency ultrasound. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132059. [PMID: 37478590 DOI: 10.1016/j.jhazmat.2023.132059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 07/01/2023] [Accepted: 07/12/2023] [Indexed: 07/23/2023]
Abstract
Pseudomorphic transformations are related to chemical conversions of materials while conserving their shape and structural features. Structuring ceramic shapes this way can be used to tailor the physico-chemical properties of materials that can benefit particular applications. In the context of spent nuclear fuel storage interacting with radiolysis products, the sonochemical behavior of powdered UO2 was investigated in dilute aqueous solutions saturated with Ar/(20 %)O2 (20 °C). Optimized parameter settings enabled the complete conversion of UO2 micrometric platelets into uranyl peroxide precipitates, referred to as (meta-)studtite [(UO2(O2)(H2O)2)xH2O] with x = 2 or 4. While the most acidic conditions yielded elongated crystal shapes in agreement with a dissolution/reprecipitation mechanism, softer conditions allowed the pseudomorphic transformation of the platelet shape oxide suggesting a complex formation mechanism. For specific conditions, this unprecedented morphology was accompanied with the formation of a hole in the platelet center. Investigations revealed that the formation of the drilled polymorphs is related to a perfect blend of H+, in-situ generation of H2O2 and high-frequency ultrasound, and is most probably related to the sono-capillary effect. These insights pave the way for new sonochemical approaches dedicated to the preparation of material polymorphs tailoring specific structural properties.
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Affiliation(s)
- Julien Margate
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
| | - Matthieu Virot
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France.
| | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France
| | | | - Tony Chave
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
| | | | - Ange Alves
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
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3
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Chen JL, Blaha P, Kaltsoyannis N. DFT + U Simulation of the X-ray Absorption Near-Edge Structure of Bulk UO 2 and PuO 2. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:17994-18000. [PMID: 37736292 PMCID: PMC10510436 DOI: 10.1021/acs.jpcc.3c03143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Revised: 07/25/2023] [Indexed: 09/23/2023]
Abstract
Hubbard U-corrected density functional theory within the periodic boundary condition model in the WIEN2k code is used to simulate the actinide LIII and O K edge X-ray absorption near-edge structure (XANES) for UO2 and PuO2. Spin-orbit coupling effects are included, as are possible excitonic effects using supercells with a core hole on one of the atoms. Our calculations yield spectra in excellent agreement with previous experiments and superior to previous simulations. Density of states analysis reveals the mechanism behind the XANES peaks: the main contribution to the U/Pu LIII edges comes from the U/Pu d states hybridized with O p states, while as expected, the O p states primarily determine the O K edges of both UO2 and PuO2. The O K edges also feature O p hybridizing with U/Pu d and f states in the low-energy region and with U/Pu s and p states for the higher-energy peaks.
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Affiliation(s)
- Jia-Li Chen
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
| | - Peter Blaha
- Institute
of Materials Chemistry, TU Vienna, Vienna A-1060, Austria
| | - Nikolas Kaltsoyannis
- Department
of Chemistry, University of Manchester, Oxford Road, Manchester M13 9PL, United Kingdom
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4
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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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5
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Cot-Auriol M, Virot M, Dumas T, Diat O, Le Goff X, Moisy P, Nikitenko SI. Ultrasonically controlled synthesis of UO 2+x colloidal nanoparticles. Dalton Trans 2023; 52:2135-2144. [PMID: 36722900 DOI: 10.1039/d2dt03721a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Actinide colloids and nanoparticles (NPs) currently constitute a topic of strong interest due to their potential role in advanced nuclear energetics and the environmental migration of radioactivity. A better understanding of the physico-chemical properties of nanoscale actinide oxides requires robust synthesis approaches. In this work, UO2+x NPs were successfully prepared by sonochemistry from U(IV) solutions previously stabilised in a hydrochloric medium (20 kHz, 65 °C, Ar/(10%)CO). Colloidal suspensions were found to be composed of crystalline and spherical NPs showing a UO2-like structure and measuring 18.0 ± 0.1 nm (SAXS, HR-TEM and PXRD techniques). In comparison with the controlled hydrolysis approach used as a reference, sonochemistry appears to be a simple and original synthesis route providing larger, better defined and more crystalline UO2+x NPs with a narrower size distribution. These well-defined NPs offer new opportunities for the preparation of reference actinide materials devoted to fundamental, technological and environmental studies.
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Affiliation(s)
| | - Matthieu Virot
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France.
| | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France
| | - Olivier Diat
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France.
| | - Xavier Le Goff
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France.
| | - Philippe Moisy
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France
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6
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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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7
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Sonochemistry of actinides: from ions to nanoparticles and beyond. RADIOCHIM ACTA 2022. [DOI: 10.1515/ract-2021-1142] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Sonochemistry studies chemical and physical effects in liquids submitted to power ultrasound. These effects arise not from a direct interaction of molecules with sound waves, but rather from the acoustic cavitation: the nucleation, growth, and implosive collapse of microbubbles in liquids submitted to power ultrasound. The violent implosion of bubbles leads to the formation of chemically reactive species. In principle, each cavitation bubble can be considered as a microreactor initiating chemical reactions at mild conditions. In addition, microjets and shock waves accompanied bubble collapse produce fragmentation, dispersion and erosion of solid surfaces or particles. Microbubbles oscillating in liquids also enable nucleation and precipitation of nanosized actinide compounds with specific morphology. This review focuses on the versatile sonochemical processes with actinide ions and particles in homogenous solutions and heterogenous systems. The redox reactions in aqueous solutions, dissolution or precipitation of refractory solids, synthesis of actinide nanoparticles, and ultrasonically driving decontamination are considered. The guideline for further research is also discussed.
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8
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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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9
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Romanchuk A, Trigub A, Plakhova T, Kuzenkova A, Svetogorov R, Kvashnina K, Kalmykov S. Effective coordination numbers from EXAFS: general approaches for lanthanide and actinide dioxides. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:288-294. [PMID: 35254290 PMCID: PMC8900841 DOI: 10.1107/s160057752101300x] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 12/07/2021] [Indexed: 06/01/2023]
Abstract
Extended X-ray absorption fine structure (EXAFS) is a comprehensive and usable method for characterizing the structures of various materials, including radioactive and nuclear materials. Unceasing discussions about the interpretation of EXAFS results for actinide nanoparticles (NPs) or colloids were still present during the last decade. In this study, new experimental data for PuO2 and CeO2 NPs with different average sizes were compared with published data on AnO2 NPs that highlight the best fit and interpretation of the structural data. In terms of the structure, PuO2, CeO2, ThO2, and UO2 NPs exhibit similar behaviors. Only ThO2 NPs have a more disordered and even partly amorphous structure, which results in EXAFS characteristics. The proposed new core-shell model for NPs with calculated effective coordination number perfectly fits the results of the variations in a metal-metal shell with a decrease in NP size.
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Affiliation(s)
- Anna Romanchuk
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, Bld. 3, Moscow 119991, Russian Federation
| | - Alexander Trigub
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, Bld. 3, Moscow 119991, Russian Federation
- National Research Centre ‘Kurchatov Institute’, Pl. Kurchatova 1, Moscow 123182, Russian Federation
| | - Tatiana Plakhova
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, Bld. 3, Moscow 119991, Russian Federation
| | - Anastasiia Kuzenkova
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, Bld. 3, Moscow 119991, Russian Federation
| | - Roman Svetogorov
- National Research Centre ‘Kurchatov Institute’, Pl. Kurchatova 1, Moscow 123182, Russian Federation
| | - Kristina Kvashnina
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, Bld. 3, Moscow 119991, Russian Federation
- The Rossendorf Beamline at ESRF – The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf (HZDR), PO Box 510119, 01314 Dresden, Germany
| | - Stepan Kalmykov
- Department of Chemistry, Lomonosov Moscow State University, Leninskie Gory 1, Bld. 3, Moscow 119991, Russian Federation
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10
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Schacherl B, Prüssmann T, Dardenne K, Hardock K, Krepper V, Rothe J, Vitova T, Geckeis H. Implementation of cryogenic tender X-ray HR-XANES spectroscopy at the ACT station of the CAT-ACT beamline at the KIT Light Source. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:80-88. [PMID: 34985425 PMCID: PMC8733978 DOI: 10.1107/s1600577521012650] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2021] [Accepted: 11/28/2021] [Indexed: 06/07/2023]
Abstract
The ACT experimental station of the CAT-ACT wiggler beamline at the Karlsruhe Institute of Technology (KIT) Light Source is dedicated to the investigation of radionuclide materials with radioactivities up to 1000000 times the exemption limit by various speciation techniques applying monochromatic X-rays. In this article, the latest technological developments at the ACT station that enable high-resolution X-ray absorption near-edge structure (HR-XANES) spectroscopy for low radionuclide loading samples are highlighted - encompassing the investigation of actinide elements down to 1 p.p.m. concentration - combined with a cryogenic sample environment reducing beam-induced sample alterations. One important part of this development is a versatile gas tight plexiglass encasement ensuring that all beam paths in the five-analyzer-crystal Johann-type X-ray emission spectrometer run within He atmosphere. The setup enables the easy exchange between different experiments (conventional X-ray absorption fine structure, HR-XANES, high-energy or wide-angle X-ray scattering, tender to hard X-ray spectroscopy) and opens up the possibility for the investigation of environmental samples, such as specimens containing transuranium elements from contaminated land sites or samples from sorption and diffusion experiments to mimic the far field of a breached nuclear waste repository.
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Affiliation(s)
- Bianca Schacherl
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Tim Prüssmann
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Kathy Dardenne
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Kirsten Hardock
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Volker Krepper
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Jörg Rothe
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Tonya Vitova
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
| | - Horst Geckeis
- Institute for Nuclear Waste Disposal (INE), Karlsruhe Institute of Technology (KIT), Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany
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11
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Dumas T, Virot M, Menut D, Tamain C, Micheau C, Dourdain S, Diat O. Size and structure of hexanuclear plutonium oxo-hydroxo clusters in aqueous solution from synchrotron analysis. JOURNAL OF SYNCHROTRON RADIATION 2022; 29:30-36. [PMID: 34985420 PMCID: PMC8733971 DOI: 10.1107/s1600577521012005] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Accepted: 11/10/2021] [Indexed: 06/01/2023]
Abstract
The size and shape of a water-soluble hexanuclear plutonium cluster were probed by combining synchrotron small-angle X-ray scattering (SAXS) and extended X-ray absorption fine structure (EXAFS). A specific setup coupling both techniques and dedicated to radioactive samples on the MARS beamline endstation at Synchrotron SOLEIL is described. The plutonium hexanuclear cores are well stabilized by the 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid ligands and this allows a good evaluation of the setup to probe the very small plutonium core. The results show that, in spite of the constrained conditions required to avoid any risk of sample dispersion, the flux and the sample environment are optimized to obtain a very good signal-to-noise ratio, allowing the detection of small plutonium aggregates in an aqueous phase. The structure of the well defined hexanuclear cluster has been confirmed by EXAFS measurements in solution and correlated with SAXS data processing and modelling. An iterative comparison of classical fit models (Guinier or sphere form factor) with the experimental results allowed a better interpretation of the SAXS signal that will be relevant for future work under environmentally relevant conditions.
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Affiliation(s)
- Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France
| | - Matthieu Virot
- ICSM, CEA, Univ Montpellier, CNRS, ENSCM, Bagnols sur Cèze, France
| | - Denis Menut
- Synchrotron SOLEIL, L’Orme des Merisiers Saint Aubin, BP 48, 91192 Gif-sur-Yvette Cedex, France
| | | | - Cyril Micheau
- ICSM, CEA, Univ Montpellier, CNRS, ENSCM, Bagnols sur Cèze, France
| | | | - Olivier Diat
- ICSM, CEA, Univ Montpellier, CNRS, ENSCM, Bagnols sur Cèze, France
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12
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Estevenon P, Dumas T, Solari PL, Welcomme E, Szenknect S, Mesbah A, Kvashnina KO, Moisy P, Poinssot C, Dacheux N. Formation of plutonium(IV) silicate species in very alkaline reactive media. Dalton Trans 2021; 50:12528-12536. [PMID: 34545888 DOI: 10.1039/d1dt02248b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Studying the speciation of Pu(IV) in very alkaline and silicate ion rich reactive media allowed identification of the formation of plutonium(IV)-silicate colloidal suspensions which were stable for months. These colloids were stabilized in aqueous solution for pH > 13 and for concentrations around 10-2 mol L-1. Successive filtration processes allowed evaluation of their size, which was found to be smaller than 6 nm. Their structural characterization by XAS evidenced that their structure was similar to those identified for the other tetravalent actinide-silicate colloidal systems like thorium, uranium and neptunium. Their formation could explain the increase of plutonium solubility usually observed in alkaline silicate-rich solutions and could affect the plutonium mobility as a result in contaminated sites or in other environmental permeable media.
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Affiliation(s)
- Paul Estevenon
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France. .,ICSM, Univ Montpellier, CNRS, CEA, ENSCM, Bagnols-sur-Cèze, France. .,The Rossendorf Beamline at the ESRF, CS40220, 38043 Grenoble Cedex 9, France.,Helmholtz Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, P.O. Box 510119, 01314, Dresden, Germany
| | - Thomas Dumas
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France.
| | - Pier Lorenzo Solari
- Synchrotron Soleil, L'Orme des Merisiers, Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette Cedex, France
| | | | | | - Adel Mesbah
- ICSM, Univ Montpellier, CNRS, CEA, ENSCM, Bagnols-sur-Cèze, France.
| | - Kristina O Kvashnina
- The Rossendorf Beamline at the ESRF, CS40220, 38043 Grenoble Cedex 9, France.,Helmholtz Zentrum Dresden-Rossendorf (HZDR), Institute of Resource Ecology, P.O. Box 510119, 01314, Dresden, Germany
| | - Philippe Moisy
- CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, France.
| | | | - Nicolas Dacheux
- ICSM, Univ Montpellier, CNRS, CEA, ENSCM, Bagnols-sur-Cèze, France.
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13
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Corbey JF, Sweet LE, Sinkov SI, Reilly DD, Parker CM, Lonergan JM, Johnson TJ. Quantitative Microstructural Characterization of Plutonium Oxalate Auto‐Degradation and Evidence for PuO
2
Nanocrystal Formation. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Jordan F. Corbey
- Pacific Northwest National Laboratory 902 Battelle Boulevard Richland, WA 99352 USA
| | - Lucas E. Sweet
- Pacific Northwest National Laboratory 902 Battelle Boulevard Richland, WA 99352 USA
| | - Sergey I. Sinkov
- Pacific Northwest National Laboratory 902 Battelle Boulevard Richland, WA 99352 USA
| | - Dallas D. Reilly
- Pacific Northwest National Laboratory 902 Battelle Boulevard Richland, WA 99352 USA
| | - Cyrena M. Parker
- Pacific Northwest National Laboratory 902 Battelle Boulevard Richland, WA 99352 USA
| | - Jason M. Lonergan
- Pacific Northwest National Laboratory 902 Battelle Boulevard Richland, WA 99352 USA
| | - Timothy J. Johnson
- Pacific Northwest National Laboratory 902 Battelle Boulevard Richland, WA 99352 USA
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14
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Cot-Auriol M, Virot M, Micheau C, Dumas T, Le Goff X, Den Auwer C, Diat O, Moisy P, Nikitenko SI. Ultrasonically assisted conversion of uranium trioxide into uranium(vi) intrinsic colloids. Dalton Trans 2021; 50:11498-11511. [PMID: 34346448 DOI: 10.1039/d1dt01609a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Under oxidizing conditions, the corrosion of spent nuclear fuel may lead to the leaching of radionuclides including soluble uranyl-based species. The speciation of the generated chemical forms is complex and the related potential formation of colloidal species appears surprisingly poorly reported in the literature. Their formation could however contribute significantly to the mobility of radionuclides in the environment. A better knowledge in the speciation and reactivity of these species appears particularly relevant. This study describes the preparation and characterization of intrinsic uranium(vi) colloids from amorphous and crystalline UO3 in pure water assisted by 20 kHz ultrasound. In the presence of carbon monoxide preventing the sonochemical formation of hydrogen peroxide, ultrasonic treatment boosts the conversion of UO3 powder into (meta-)schoepite precipitates and yields very stable and notably concentrated uranium(vi) nanoparticles in the liquid phase. Using HR-TEM, SAXS and XAS techniques, we confirmed that the colloidal suspension is composed of quasi-spherical nanoparticles measuring ca. 3.8 ± 0.3 nm and exhibiting a schoepite-like crystallographic structure. The proposed method demonstrates the possible formation of environmentally relevant U(vi) colloidal nanoparticles appearing particularly interesting for the preparation of reference systems in the absence of added ions and capping agents.
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15
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Amidani L, Vaughan GBM, Plakhova TV, Romanchuk AY, Gerber E, Svetogorov R, Weiss S, Joly Y, Kalmykov SN, Kvashnina KO. The Application of HEXS and HERFD XANES for Accurate Structural Characterisation of Actinide Nanomaterials: The Case of ThO 2. Chemistry 2021; 27:252-263. [PMID: 32956492 PMCID: PMC7839789 DOI: 10.1002/chem.202003360] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Revised: 09/07/2020] [Indexed: 11/22/2022]
Abstract
The structural characterisation of actinide nanoparticles (NPs) is of primary importance and hard to achieve, especially for non-homogeneous samples with NPs less than 3 nm. By combining high-energy X-ray scattering (HEXS) and high-energy-resolution fluorescence-detected X-ray absorption near-edge structure (HERFD XANES) analysis, we have characterised for the first time both the short- and medium-range order of ThO2 NPs obtained by chemical precipitation. By using this methodology, a novel insight into the structures of NPs at different stages of their formation has been achieved. The pair distribution function revealed a high concentration of ThO2 small units similar to thorium hexamer clusters mixed with 1 nm ThO2 NPs in the initial steps of formation. Drying the precipitates at around 150 °C promoted the recrystallisation of the smallest units into more thermodynamically stable ThO2 NPs. HERFD XANES analysis at the thorium M4 edge, a direct probe for f states, showed variations that we have correlated with the breakdown of the local symmetry around the thorium atoms, which most likely concerns surface atoms. Together, HEXS and HERFD XANES are a powerful methodology for investigating actinide NPs and their formation mechanism.
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Affiliation(s)
- Lucia Amidani
- The Rossendorf Beamline at ESRFThe European SynchrotronCS4022038043Grenoble Cedex 9France
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR), PO Box 51011901314DresdenGermany
| | | | | | - Anna Yu. Romanchuk
- Department of ChemistryLomonosov Moscow State University119991MoscowRussia
| | - Evgeny Gerber
- The Rossendorf Beamline at ESRFThe European SynchrotronCS4022038043Grenoble Cedex 9France
- Department of ChemistryLomonosov Moscow State University119991MoscowRussia
| | - Roman Svetogorov
- National Research Centre “Kurchatov Institute”123182MoscowRussia
| | - Stephan Weiss
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR), PO Box 51011901314DresdenGermany
| | - Yves Joly
- CNRS, Grenoble INPInstitut NéelUniversité Grenoble Alpes38042GrenobleFrance
| | - Stepan N. Kalmykov
- Department of ChemistryLomonosov Moscow State University119991MoscowRussia
| | - Kristina O. Kvashnina
- The Rossendorf Beamline at ESRFThe European SynchrotronCS4022038043Grenoble Cedex 9France
- Institute of Resource EcologyHelmholtz Zentrum Dresden-Rossendorf (HZDR), PO Box 51011901314DresdenGermany
- Department of ChemistryLomonosov Moscow State University119991MoscowRussia
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16
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Bonato L, Virot M, Le Goff X, Moisy P, Nikitenko SI. Sonochemical dissolution of nanoscale ThO 2 and partial conversion into a thorium peroxo sulfate. ULTRASONICS SONOCHEMISTRY 2020; 69:105235. [PMID: 32619920 DOI: 10.1016/j.ultsonch.2020.105235] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 06/15/2020] [Accepted: 06/18/2020] [Indexed: 06/11/2023]
Abstract
The influence of the sample morphology and experimental conditions towards the sonochemical dissolution of nanoscale ThO2 samples in sulfuric acid media is described. Significant sonochemical dissolution rates and yields are observed at 20 kHz under Ar/O2 atmosphere in dilute 0.5 M H2SO4 at room temperature, contrasting with the generally-reported high refractory behavior for ThO2. The dissolution of ThO2 combines the physical effects driven by acoustic cavitation phenomenon, the complexing affinity of Th(IV) in sulfuric medium and the sonochemical generation of H2O2. These sonochemical conditions further allow the observation of the partial conversion of ThO2 into a scarce Th(IV) peroxo sulfate with 1D morphology resulting from one or both following processes: dissolution/reprecipitation or formation of an intermediate Th(IV) surface complex.
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Affiliation(s)
- Laura Bonato
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
| | - Matthieu Virot
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France.
| | - Xavier Le Goff
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, France
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17
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Gerber E, Romanchuk AY, Pidchenko I, Amidani L, Rossberg A, Hennig C, Vaughan GBM, Trigub A, Egorova T, Bauters S, Plakhova T, Hunault MOJY, Weiss S, Butorin SM, Scheinost AC, Kalmykov SN, Kvashnina KO. The missing pieces of the PuO 2 nanoparticle puzzle. NANOSCALE 2020; 12:18039-18048. [PMID: 32648876 DOI: 10.1039/d0nr03767b] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The nanoscience field often produces results more mystifying than any other discipline. It has been argued that changes in the plutonium dioxide (PuO2) particle size from bulk to nano can have a drastic effect on PuO2 properties. Here we report a full characterization of PuO2 nanoparticles (NPs) at the atomic level and probe their local and electronic structures by a variety of methods available at the synchrotron, including extended X-ray absorption fine structure (EXAFS) at the Pu L3 edge, X-ray absorption near edge structure (XANES) in high energy resolution fluorescence detection (HERFD) mode at the Pu L3 and M4 edges, high energy X-ray scattering (HEXS) and X-ray diffraction (XRD). The particles were synthesized from precursors with different oxidation states of plutonium (III, IV, and V) under various environmentally and waste storage relevant conditions (pH 8 and pH > 10). Our experimental results analyzed with state-of-the-art theoretical approaches demonstrate that well dispersed, crystalline NPs with a size of ∼2.5 nm in diameter are always formed in spite of diverse chemical conditions. Identical crystal structures and the presence of only the Pu(iv) oxidation state in all NPs, reported here for the first time, indicate that the structure of PuO2 NPs is very similar to that of the bulk PuO2. All methods give complementary information and show that investigated fundamental properties of PuO2 NPs, rather than being exotic, are very similar to those of the bulk PuO2.
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Affiliation(s)
- Evgeny Gerber
- The Rossendorf Beamline at ESRF - The European Synchrotron, CS40220, 38043 Grenoble Cedex 9, France.
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18
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Straub MD, Arnold J, Fessenden J, Kiplinger JL. Recent Advances in Nuclear Forensic Chemistry. Anal Chem 2020; 93:3-22. [DOI: 10.1021/acs.analchem.0c03571] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Mark D. Straub
- Department of Chemistry, University of California, Berkeley, California 94720, United States
- Los Alamos National Laboratory, Chemistry Division, Mailstop J-514, Los Alamos, New Mexico 87545, United States
| | - John Arnold
- Department of Chemistry, University of California, Berkeley, California 94720, United States
| | - Julianna Fessenden
- Los Alamos National Laboratory, XTD Division, Los Alamos, New Mexico 87545, United States
| | - Jaqueline L. Kiplinger
- Los Alamos National Laboratory, Chemistry Division, Mailstop J-514, Los Alamos, New Mexico 87545, United States
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19
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Abstract
We review oxygen K-edge X-ray absorption spectra of both molecules and solids. We start with an overview of the main experimental aspects of oxygen K-edge X-ray absorption measurements including X-ray sources, monochromators, and detection schemes. Many recent oxygen K-edge studies combine X-ray absorption with time and spatially resolved measurements and/or operando conditions. The main theoretical and conceptual approximations for the simulation of oxygen K-edges are discussed in the Theory section. We subsequently discuss oxygen atoms and ions, binary molecules, water, and larger molecules containing oxygen, including biomolecular systems. The largest part of the review deals with the experimental results for solid oxides, starting from s- and p-electron oxides. Examples of theoretical simulations for these oxides are introduced in order to show how accurate a DFT description can be in the case of s and p electron overlap. We discuss the general analysis of the 3d transition metal oxides including discussions of the crystal field effect and the effects and trends in oxidation state and covalency. In addition to the general concepts, we give a systematic overview of the oxygen K-edges element by element, for the s-, p-, d-, and f-electron systems.
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Affiliation(s)
- Federica Frati
- Inorganic
chemistry and catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584CG Utrecht, The Netherlands
| | | | - Frank M. F. de Groot
- Inorganic
chemistry and catalysis, Debye Institute for Nanomaterials Science, Utrecht University, 3584CG Utrecht, The Netherlands
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20
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Moreau LM, Herve A, Straub MD, Russo DR, Abergel RJ, Alayoglu S, Arnold J, Braun A, Deblonde GJP, Liu Y, Lohrey TD, Olive DT, Qiao Y, Rees JA, Shuh DK, Teat SJ, Booth CH, Minasian SG. Structural properties of ultra-small thorium and uranium dioxide nanoparticles embedded in a covalent organic framework. Chem Sci 2020; 11:4648-4668. [PMID: 34122920 PMCID: PMC8159168 DOI: 10.1039/c9sc06117g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 04/13/2020] [Indexed: 01/23/2023] Open
Abstract
We report the structural properties of ultra-small ThO2 and UO2 nanoparticles (NPs), which were synthesized without strong binding surface ligands by employing a covalent organic framework (COF-5) as an inert template. The resultant NPs were used to observe how structural properties are affected by decreasing grain size within bulk actinide oxides, which has implications for understanding the behavior of nuclear fuel materials. Through a comprehensive characterization strategy, we gain insight regarding how structure at the NP surface differs from the interior. Characterization using electron microscopy and small-angle X-ray scattering indicates that growth of the ThO2 and UO2 NPs was confined by the pores of the COF template, resulting in sub-3 nm particles. X-ray absorption fine structure spectroscopy results indicate that the NPs are best described as ThO2 and UO2 materials with unpassivated surfaces. The surface layers of these particles compensate for high surface energy by exhibiting a broader distribution of Th-O and U-O bond distances despite retaining average bond lengths that are characteristic of bulk ThO2 and UO2. The combined synthesis and physical characterization efforts provide a detailed picture of actinide oxide structure at the nanoscale, which remains highly underexplored compared to transition metal counterparts.
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Affiliation(s)
- Liane M Moreau
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | | | - Mark D Straub
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- University of California Berkeley CA 94720 USA
| | - Dominic R Russo
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- University of California Berkeley CA 94720 USA
| | - Rebecca J Abergel
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- University of California Berkeley CA 94720 USA
| | - Selim Alayoglu
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - John Arnold
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- University of California Berkeley CA 94720 USA
| | - Augustin Braun
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | | | | | - Trevor D Lohrey
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- University of California Berkeley CA 94720 USA
| | - Daniel T Olive
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- Los Alamos National Laboratory Los Alamos NM 87545 USA
| | - Yusen Qiao
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
- University of Pennsylvania Philadelphia PA 19104 USA
| | - Julian A Rees
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - David K Shuh
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Simon J Teat
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
| | - Corwin H Booth
- Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
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21
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Bonato L, Virot M, Dumas T, Mesbah A, Dalodière E, Dieste Blanco O, Wiss T, Le Goff X, Odorico M, Prieur D, Rossberg A, Venault L, Dacheux N, Moisy P, Nikitenko SI. Probing the local structure of nanoscale actinide oxides: a comparison between PuO 2 and ThO 2 nanoparticles rules out PuO 2+x hypothesis. NANOSCALE ADVANCES 2020; 2:214-224. [PMID: 36134012 PMCID: PMC9418969 DOI: 10.1039/c9na00662a] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/04/2019] [Accepted: 11/26/2019] [Indexed: 06/01/2023]
Abstract
Actinide research at the nanoscale is gaining fundamental interest due to environmental and industrial issues. The knowledge of the local structure and speciation of actinide nanoparticles, which possibly exhibit specific physico-chemical properties in comparison to bulk materials, would help in a better and reliable description of their behaviour and reactivity. Herein, the synthesis and relevant characterization of PuO2 and ThO2 nanoparticles displayed as dispersed colloids, nanopowders, or nanostructured oxide powders allow to establish a clear relationship between the size of the nanocrystals constituting these oxides and their corresponding An(iv) local structure investigated by EXAFS spectroscopy. Particularly, the first oxygen shell of the probed An(iv) evidences an analogous behaviour for both Pu and Th oxides. This observation suggests that the often observed and controversial splitting of the Pu-O shell on the Fourier transformed EXAFS signal of the PuO2 samples is attributed to a local structural disorder driven by a nanoparticle surface effect rather than to the presence of PuO2+x species.
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Affiliation(s)
- Laura Bonato
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM Marcoule France
| | - Matthieu Virot
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM Marcoule France
| | - Thomas Dumas
- CEA, DEN, DMRC, Univ Montpellier Marcoule France
| | - Adel Mesbah
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM Marcoule France
| | | | - Oliver Dieste Blanco
- European Commission, Joint Research Centre (JRC), Institute for Transuranium Elements (ITU) Postfach 2340 76125 Karlsruhe Germany
| | - Thierry Wiss
- European Commission, Joint Research Centre (JRC), Institute for Transuranium Elements (ITU) Postfach 2340 76125 Karlsruhe Germany
| | - Xavier Le Goff
- ICSM, Univ Montpellier, CEA, CNRS, ENSCM Marcoule France
| | | | - Damien Prieur
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology Bautzner Landstraße 400 01328 Dresden Germany
| | - André Rossberg
- Helmholtz-Zentrum Dresden - Rossendorf, Institute of Resource Ecology Bautzner Landstraße 400 01328 Dresden Germany
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22
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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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23
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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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24
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Leduc J, Frank M, Jürgensen L, Graf D, Raauf A, Mathur S. Chemistry of Actinide Centers in Heterogeneous Catalytic Transformations of Small Molecules. ACS Catal 2019. [DOI: 10.1021/acscatal.8b04924] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jennifer Leduc
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
| | - Michael Frank
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
| | - Lasse Jürgensen
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
| | - David Graf
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
| | - Aida Raauf
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
| | - Sanjay Mathur
- Institute of Inorganic Chemistry, University of Cologne, Greinstr. 6, D-50939 Cologne, Germany
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25
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Sigmon GE, Hixon AE. Extension of the Plutonium Oxide Nanocluster Family to Include {Pu
16
} and {Pu
22
}. Chemistry 2019; 25:2463-2466. [DOI: 10.1002/chem.201805605] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 12/19/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Ginger E. Sigmon
- Department of Civil & Environmental Engineering & Earth Sciences University of Notre Dame 301 Stinson-Remick Notre Dame IN 46556 USA
| | - Amy E. Hixon
- Department of Civil & Environmental Engineering & Earth Sciences University of Notre Dame 301 Stinson-Remick Notre Dame IN 46556 USA
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26
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Moghadam Z, Akhbari K, White J, Phuruangrat A. Reversible desorption and absorption of water in a zinc-based coordination polymer nanostructure. Polyhedron 2018. [DOI: 10.1016/j.poly.2018.07.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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Moeinian M, Akhbari K, Boonmak J, Youngme S. Three-dimensional organometallic thallium(I) supramolecular polymer nanostructures synthesized with sonochemical process. ULTRASONICS SONOCHEMISTRY 2018; 41:11-16. [PMID: 29137733 DOI: 10.1016/j.ultsonch.2017.09.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2017] [Revised: 09/04/2017] [Accepted: 09/05/2017] [Indexed: 06/07/2023]
Abstract
A new three-dimensional thallium(I) supramolecular polymer, [Tl2(μ2-ATA)]n (1), [H2ATA=2-aminoterephthalic acid], has been synthesized and characterized. The single-crystal X-ray data of compound 1 shows one type of TlI ion with a low coordination number. Compound 1 was self-assembled from Tl⋯C, Tl⋯O and Tl⋯N secondary interactions in thallium(I) coordination and the active lone pair on TlI in this compound may be involved in donor bonding. Two sides of the aromatic ring of ATA2- anion have been involved in two types of secondary Tl⋯C approaches. Three samples of 1 were synthesized with three different concentrations of initial reagents under ultrasonic irradiation. The thermal stability of compound 1 samples were studied by thermo gravimetric (TG) and differential thermal analyses (DTA). These nano-structures were characterized by X-ray powder diffraction (XRD) and scanning electron microscopy (SEM).
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Affiliation(s)
- Maryam Moeinian
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Islamic Republic of Iran
| | - Kamran Akhbari
- School of Chemistry, College of Science, University of Tehran, P.O. Box 14155-6455, Tehran, Islamic Republic of Iran.
| | - Jaursup Boonmak
- Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
| | - Sujittra Youngme
- Materials Chemistry Research Center, Department of Chemistry and Center of Excellence for Innovation in Chemistry, Faculty of Science, Khon Kaen University, Khon Kaen 40002, Thailand
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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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Romanchuk AY, Plakhova TV, Egorov AV, Egorova TB, Dorovatovskii PV, Zubavichus YV, Shiryaev AA, Kalmykov SN. Redox-mediated formation of plutonium oxide nanoparticles. Dalton Trans 2018; 47:11239-11244. [DOI: 10.1039/c8dt02396d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Precipitates formed by the neutralisation of Pu(iii), Pu(iv), Pu(v), and Pu(vi) solutions were characterised by HRTEM, SAXS, and XRD in the suspensions. PuO2 nanoparticles uniform in size (typical diameter around 2.5 nm) and phase composition were observed in all cases under equilibrium conditions.
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Affiliation(s)
| | | | | | | | | | | | - Andrey A. Shiryaev
- Lomonosov Moscow State University
- Moscow
- Russia
- Frumkin Institute of Physical Chemistry and Electrochemistry of Russian Academy of Science
- Moscow
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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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31
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Mason CA, Hubley NT, Robertson JD, Wegge DL, Brockman JD. Sonication assisted dissolution of post-detonation nuclear debris using ammonium bifluoride. RADIOCHIM ACTA 2017. [DOI: 10.1515/ract-2017-2802] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
There is significant interest in reducing the timeline for post detonation nuclear debris examination. A critical need is rapid dissolution of refractory nuclear debris to facilitate measurement of key radioisotopes and isotope ratios. Field deployable, rapid dissolution and analysis methods could significantly shorten the attribution analysis timeline. The current practice uses HF in combination with other acids to attack silicates and other refractory minerals expected in debris samples. However, techniques requiring HF are not amenable to use in the field. The fluorinating agent ammonium bifluoride (ABF) is a potential field deployable substitute for HF. In this work we report on the use of in-direct sonication with ABF as a means to improve low-temperature acid digestion of seven USGS and NIST geological reference materials. Using this method, elemental recoveries for USGS reference materials DNC-1a Dolerite, QLO-1a Quartz Latite, SDC-1 Mica Schist, and BHVO-2 Hawaiian Basalt were quantitative while the recovery of elements in USGS AGV-2 Andesite and NIST SRM 278 Obsidian and 1413 High Alumina Sand were low.
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Affiliation(s)
- Christian A. Mason
- University of Missouri Research Reactor Center , University of Missouri , 1513 Research Park Dr., Columbia, MO 65211 , USA
| | - Nicholas T. Hubley
- Department of Chemistry , University of Missouri , 125 Chemistry Building, Columbia, MO 65211 , USA
| | - J. David Robertson
- University of Missouri Research Reactor Center , University of Missouri , 1513 Research Park Dr., Columbia, MO 65211 , USA
- Department of Chemistry , University of Missouri , 125 Chemistry Building, Columbia, MO 65211 , USA
| | - Dana L. Wegge
- Department of Chemistry , University of Missouri , 125 Chemistry Building, Columbia, MO 65211 , USA
| | - John D. Brockman
- University of Missouri Research Reactor Center , University of Missouri , 1513 Research Park Dr., Columbia, MO 65211 , USA
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