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Wang C, Myshkin VF, Khan VA, Panamareva AN. A review of the migration of radioactive elements in clay minerals in the context of nuclear waste storage. J Radioanal Nucl Chem 2022. [DOI: 10.1007/s10967-022-08394-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zubekhina BY, Shiryaev AA, Burakov BE, Vlasova IE, Averin AA, Yapaskurt VO, Petrov VG. Chemical alteration of 238Pu-loaded borosilicate glass under saturated leaching conditions. RADIOCHIM ACTA 2019. [DOI: 10.1515/ract-2018-3097] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Highly radioactive 238Pu-doped and non-radioactive samples of borosilicate glass with chemical compositions and synthesis routine similar to SON68 glass were studied under static saturated leaching conditions in distilled water at 90 °C. Dramatic differences in behavior of the radioactive and model glasses were observed. On time scale of 4 months the radioactive glass is fully covered by mechanically unstable alteration layer, possibly consisting of aluminum hydroxides with small fraction of a separate secondary Pu bearing phase. The model glass remains virtually pristine. Addition of Eu3+ into the glass allowed examination of the glass radio- and photoluminescence and to assess changes or REE3+ impurity local environment during self-irradiation and leaching. Photoluminescence spectra suggest more ordered local environment of europium ions in the alteration “gel” than in the bulk glass. Peculiar behavior of the photoluminescence spectra excited at different laser power is observed for the alteration layer and is ascribed to optical bleaching of color centers.
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Affiliation(s)
| | - Andrei A. Shiryaev
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS , Moscow 119071 , Russia
- Department of Chemistry , Lomonosov Moscow State University , Moscow 119991 , Russia
| | | | - Irina E. Vlasova
- Department of Chemistry , Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Alexey A. Averin
- A.N. Frumkin Institute of Physical Chemistry and Electrochemistry RAS , Moscow 119071 , Russia
| | - Vasily O. Yapaskurt
- Department of Geology , Lomonosov Moscow State University , Moscow 119991 , Russia
| | - Vladimir G. Petrov
- Department of Chemistry , Lomonosov Moscow State University , Leninskie Gory, 1 bld. 3 , Moscow 119991 , Russia
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Shiryaev AA, Hinks JA, Marks NA, Greaves G, Valencia FJ, Donnelly SE, González RI, Kiwi M, Trigub AL, Bringa EM, Fogg JL, Vlasov II. Ion implantation in nanodiamonds: size effect and energy dependence. Sci Rep 2018; 8:5099. [PMID: 29572465 PMCID: PMC5865192 DOI: 10.1038/s41598-018-23434-y] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2017] [Accepted: 03/05/2018] [Indexed: 11/29/2022] Open
Abstract
Nanoparticles are ubiquitous in nature and are increasingly important for technology. They are subject to bombardment by ionizing radiation in a diverse range of environments. In particular, nanodiamonds represent a variety of nanoparticles of significant fundamental and applied interest. Here we present a combined experimental and computational study of the behaviour of nanodiamonds under irradiation by xenon ions. Unexpectedly, we observed a pronounced size effect on the radiation resistance of the nanodiamonds: particles larger than 8 nm behave similarly to macroscopic diamond (i.e. characterized by high radiation resistance) whereas smaller particles can be completely destroyed by a single impact from an ion in a defined energy range. This latter observation is explained by extreme heating of the nanodiamonds by the penetrating ion. The obtained results are not limited to nanodiamonds, making them of interest for several fields, putting constraints on processes for the controlled modification of nanodiamonds, on the survival of dust in astrophysical environments, and on the behaviour of actinides released from nuclear waste into the environment.
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Affiliation(s)
- Andrey A Shiryaev
- Frumkin Institute of Physical Chemistry and Electrochemistry RAS, Leninsky pr .31 korp. 4, Moscow, 119071, Russia. .,Chemistry Dept., Lomonosov Moscow State University, Moscow, Russia.
| | - Jonathan A Hinks
- University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, United Kingdom
| | - Nigel A Marks
- Dept. of Physics and Astronomy, Curtin University, Perth, Australia
| | - Graeme Greaves
- University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, United Kingdom
| | - Felipe J Valencia
- Núcleo de Matemáticas, Física y Estadística, Facultad de Ciencias, Universidad Mayor, Chile.,Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile.,Centro para el Desarrollo de la Nanociencia y la Nanotecnología, CEDENNA, Avda. Ecuador 3493, Santiago, 9170124, Chile
| | - Stephen E Donnelly
- University of Huddersfield, Queensgate, Huddersfield, HD1 3DH, United Kingdom
| | - Rafael I González
- Centro para el Desarrollo de la Nanociencia y la Nanotecnología, CEDENNA, Avda. Ecuador 3493, Santiago, 9170124, Chile.,Centro de Nanotecnología Aplicada, Facultad de Ciencias, Universidad Mayor, Camino La Pirámide, 5750, Huechuraba, Santiago, Chile
| | - Miguel Kiwi
- Departamento de Física, Facultad de Ciencias, Universidad de Chile, Casilla 653, Santiago, Chile.,Centro para el Desarrollo de la Nanociencia y la Nanotecnología, CEDENNA, Avda. Ecuador 3493, Santiago, 9170124, Chile
| | | | - Eduardo M Bringa
- Facultad de Ciencias Exactas y Naturales, Universidad Nacional de Cuyo, Mendoza, 5500, Argentina.,CONICET, Mendoza, Argentina
| | - Jason L Fogg
- Dept. of Physics and Astronomy, Curtin University, Perth, Australia
| | - Igor I Vlasov
- General Physics Institute RAS, Vavilova St. 38, Moscow, Russia.,National Research Nuclear University MEPhI, Moscow, 115409, Russia
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Zänker H, Hennig C. Colloid-borne forms of tetravalent actinides: a brief review. JOURNAL OF CONTAMINANT HYDROLOGY 2014; 157:87-105. [PMID: 24365396 DOI: 10.1016/j.jconhyd.2013.11.004] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 11/08/2013] [Accepted: 11/26/2013] [Indexed: 06/03/2023]
Abstract
Tetravalent actinides, An(IV), are usually assumed to be little mobile in near-neutral environmental waters because of their low solubility. However, there are certain geochemical scenarios during which mobilization of An(IV) in a colloid-borne (waterborne) form cannot be ruled out. A compilation of colloid-borne forms of tetravalent actinides described so far for laboratory experiments together with several examples of An(IV) colloids observed in field experiments and real-world scenarios are given. They are intended to be a knowledge base and a tool for those who have to interpret actinide behavior under environmental conditions. Synthetic colloids containing structural An(IV) and synthetic colloids carrying adsorbed An(IV) are considered. Their behavior is compared with the behavior of An(IV) colloids observed after the intentional or unintentional release of actinides into the environment. A list of knowledge gaps as to the behavior of An(IV) colloids is provided and items which need further research are highlighted.
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Affiliation(s)
- Harald Zänker
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, P.O. Box 51 01 19, D-01314 Dresden, Germany.
| | - Christoph Hennig
- Institute of Resource Ecology, Helmholtz-Zentrum Dresden-Rossendorf, P.O. Box 51 01 19, D-01314 Dresden, Germany
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