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Belov AA, Shichalin OO, Papynov EK, Buravlev IY, Portnyagin AS, Azon SA, Fedorets AN, Vornovskikh AA, Kolodeznikov ES, Gridasova EA, Pogodaev A, Kondrikov NB, Shi Y, Tananaev IG. An SPS-RS Technique for the Fabrication of SrMoO 4 Powellite Mineral-like Ceramics for 90Sr Immobilization. MATERIALS (BASEL, SWITZERLAND) 2023; 16:5838. [PMID: 37687531 PMCID: PMC10489041 DOI: 10.3390/ma16175838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Revised: 08/04/2023] [Accepted: 08/22/2023] [Indexed: 09/10/2023]
Abstract
This paper reports a method for the fabrication of mineral-like SrMoO4 ceramics with a powellite structure, which is promising for the immobilization of the high-energy 90Sr radioisotope. The reported method is based on the solid-phase "in situ" interaction between SrO and MoO3 oxides initiated under spark plasma sintering (SPS) conditions. Dilatometry, XRD, SEM, and EDX methods were used to investigate the consolidation dynamics, phase formation, and structural changes in the reactive powder blend and sintered ceramics. The temperature conditions for SrMoO4 formation under SPS were determined, yielding ceramics with a relative density of 84.0-96.3%, Vickers microhardness of 157-295 HV, and compressive strength of 54-331 MPa. Ceramic samples demonstrate a low Sr leaching rate of 10-6 g/cm2·day, indicating a rather high hydrolytic stability and meeting the requirements of GOST R 50926-96 imposed on solid radioactive wastes. The results presented here show a wide range of prospects for the application of ceramic matrixes with the mineral-like composition studied here to radioactive waste processing and radioisotope manufacturing.
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Affiliation(s)
- Anton A. Belov
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Oleg O. Shichalin
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Evgeniy K. Papynov
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Igor Yu. Buravlev
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Arseniy S. Portnyagin
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Semen A. Azon
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Alexander N. Fedorets
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Anastasia A. Vornovskikh
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Erhan S. Kolodeznikov
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Ekaterina A. Gridasova
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Anton Pogodaev
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Nikolay B. Kondrikov
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
| | - Yun Shi
- Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201899, China
- Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Ivan G. Tananaev
- Nuclear Technology Laboratory, Department of Nuclear Technology, Institute of High Technologies and Advanced Materials, Far Eastern Federal University, 10 Ajax Bay, Russky Island, 690922 Vladivostok, Russia (E.K.P.); (I.Y.B.); (A.S.P.); (S.A.A.); (A.N.F.); (A.A.V.); (A.P.); (N.B.K.)
- Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Kola Science Center, Russian Academy of Sciences, Akademgorodok, 26a, 184209 Apatity, Russia
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Dixon Wilkins MC, Townsend LT, Stennett MC, Kvashnina KO, Corkhill CL, Hyatt NC. A multimodal X-ray spectroscopy investigation of uranium speciation in ThTi 2O 6 compounds with the brannerite structure. Sci Rep 2023; 13:12776. [PMID: 37550380 PMCID: PMC10406819 DOI: 10.1038/s41598-023-38912-1] [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: 04/28/2023] [Accepted: 07/17/2023] [Indexed: 08/09/2023] Open
Abstract
ThTi2O6 derived compounds with the brannerite structure were designed, synthesised, and characterised with the aim of stabilising incorporation of U5+ or U6+, at dilute concentration. Appropriate charge compensation was targeted by co-substitution of Gd3+, Ca2+, Al3+, or Cr3+, on the Th or Ti site. U L3 edge X-ray Absorption Near Edge Spectroscopy (XANES) and High Energy Resolution Fluorescence Detected U M4 edge XANES evidenced U5+ as the major oxidation state in all compounds, with a minor fraction of U6+ (2-13%). The balance of X-ray and Raman spectroscopy data support uranate, rather than uranyl, as the dominant U6+ speciation in the reported brannerites. It is considered that the U6+ concentration was limited by unfavourable electrostatic repulsion arising from substitution in the octahedral Th or Ti sites, which share two or three edges, respectively, with neighbouring polyhedra in the brannerite structure.
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Affiliation(s)
- Malin C Dixon Wilkins
- Department of Materials Science and Engineering, University of Sheffield, Sheffield, UK
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USA
| | - Luke T Townsend
- Department of Materials Science and Engineering, University of Sheffield, Sheffield, UK
| | - Martin C Stennett
- Department of Materials Science and Engineering, University of Sheffield, Sheffield, UK
| | - Kristina O Kvashnina
- The Rossendorf Beamline at ESRF, CS 40220, 38043, Grenoble Cedex 9, France
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, Bautzner Landstrasse 400, 01328, Dresden, Germany
| | - Claire L Corkhill
- Department of Materials Science and Engineering, University of Sheffield, Sheffield, UK.
- School of Earth Sciences, The University of Bristol, Bristol, BS8 1RL, UK.
| | - Neil C Hyatt
- Department of Materials Science and Engineering, University of Sheffield, Sheffield, UK
- School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164, USA
- School of Earth Sciences, The University of Bristol, Bristol, BS8 1RL, UK
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Garcia-Sanchez T, Diaz-Anichtchenko D, Muñoz A, Rodriguez-Hernandez P, Marqueño T, Jafar M, Achary SN, Alabarse F, Errandonea D. High-Pressure X-ray Diffraction Study of Orthorhombic Ca 2Zr 5Ti 2O 16. THE JOURNAL OF PHYSICAL CHEMISTRY. C, NANOMATERIALS AND INTERFACES 2023; 127:2069-2077. [PMID: 36761229 PMCID: PMC9901213 DOI: 10.1021/acs.jpcc.2c08011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2022] [Revised: 01/11/2023] [Indexed: 06/18/2023]
Abstract
The orthorhombic polymorph of Ca2Zr5Ti2O16 (space group Pbca) has been studied by powder X-ray diffraction under high pressures up to 30 GPa using synchrotron radiation. We have found evidence of a structural phase transition at 12-13 GPa. The phase transition causes an enhancement of the crystal symmetry. The high-pressure phase is tetragonal, being described by space group I41/acd. The space groups of the high- and low-pressure phases have a group/subgroup relationship. However, the phase transition is accompanied by a discontinuous change in the unit-cell volume, indicating that the phase transition can be classified as first order. We have also performed density functional theory calculations. These simulations support the occurrence of the orthorhombic-to-tetragonal transition. The pressure-volume equation of state and axial compressibilities have been determined for both polymorphs. The results are compared with previous studies in related oxides.
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Affiliation(s)
- Tania Garcia-Sanchez
- Departamento
de Ingeniería Eléctrica, MALTA Consolider Team, Universitat Politècnica de València, Camino de Vera s/n., Valencia, 46022, Spain
| | - Daniel Diaz-Anichtchenko
- Departamento
de Física Aplicada—ICMUV, MALTA Consolider Team, Universitat de Valencia, Dr. Moliner 50, Burjassot Valencia, 46100, Spain
| | - Alfonso Muñoz
- Departamento
de Física, Instituto de Materiales y Nanotecnología,
MALTA Consolider Team, Universidad de La
Laguna, La Laguna, Tenerife 38205, Spain
| | - Placida Rodriguez-Hernandez
- Departamento
de Física, Instituto de Materiales y Nanotecnología,
MALTA Consolider Team, Universidad de La
Laguna, La Laguna, Tenerife 38205, Spain
| | - Tomas Marqueño
- Departamento
de Física Aplicada—ICMUV, MALTA Consolider Team, Universitat de Valencia, Dr. Moliner 50, Burjassot Valencia, 46100, Spain
| | - Mohsin Jafar
- Chemistry
Division, Bhabha Atomic Research Centre, Mumbai, 400085, India
| | | | - Frederico Alabarse
- Xpress—High
pressure diffraction beamline, Elettra synchrotron, Triestre, 25032, Italy
| | - Daniel Errandonea
- Departamento
de Física Aplicada—ICMUV, MALTA Consolider Team, Universitat de Valencia, Dr. Moliner 50, Burjassot Valencia, 46100, Spain
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