Layer-structured uranyl-oxide hydroxy-hydrates with Pr(III) and Tb(III) ions: hydroxyl to oxo transition driven by interlayer cations

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00023272%3A_____%2F20%3A10134937" target="_blank" >RIV/00023272:_____/20:10134937 - isvavai.cz</a>

Result on the web

<a href="https://pubs.rsc.org/en/content/articlelanding/2020/dt/d0dt00526f/unauth#!divAbstract" target="_blank" >https://pubs.rsc.org/en/content/articlelanding/2020/dt/d0dt00526f/unauth#!divAbstract</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/d0dt00526f" target="_blank" >10.1039/d0dt00526f</a>

Result language

angličtina

Original language name

Layer-structured uranyl-oxide hydroxy-hydrates with Pr(III) and Tb(III) ions: hydroxyl to oxo transition driven by interlayer cations

Original language description

We report the hydrothermal synthesis and characterization of two uranyl-oxide hydroxy-hydrate compounds with Pr(III) (U-Pr) and Tb(III) (U-Tb) ions prepared via direct hydrothermal reactions of lanthanide (Ln = Pr or Tb) ions with a uranyl-oxide hydroxy-hydrate phase, schoepite. Both compounds U-Pr and U-Tb show thin plate morphologies with atomic ratios of 2 (U : Pr) and 6 (U : Tb) and have been characterized by multiple techniques. The layered structures with interlayer hydrated Pr(iii) or Tb(s) ions formed via uranyl-Pr/Tb interactions have been confirmed by synchrotron single crystal X-ray diffraction studies. In addition, the evolution of the uranyl oxide hydroxide layers and anion topologies upon increasing the concentration of interlayer cations by using different U : Ln (Ln = Pr or Tb) ratios has been discussed. The success in the preparation and characterization of compounds U-Pr and U-Tb with different U : Ln (Ln = Pr or Tb) ratios highlights the flexibility of the uranyl oxide hydroxide layers with respect to the incorporation of interlayer cations via a gradual hydroxyl to oxo transition. The study has direct implications in regard to the natural weathering of uraninite mineral and the alteration of spent nuclear fuels during the long-term geological disposal.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10504 - Mineralogy

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2020

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Dalton Transactions

ISSN

1477-9226

e-ISSN

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Volume of the periodical

49

Issue of the periodical within the volume

18

Country of publishing house

GB - UNITED KINGDOM

Number of pages

10

Pages from-to

5832-5841

UT code for WoS article

000534340700009

EID of the result in the Scopus database

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