Published November 2022 | Version v1
Journal article Metadata-only

First observation of [Pu6(OH)4O4]12+ cluster during the hydrolytic formation of PuO2 nanoparticles using H/D kinetic isotope effect

Creators

  • 1. ICSM, Univ Montpellier, CEA, CNRS, ENSCM, Marcoule, (France)
  • 2. CEA, DES, ISEC, DMRC, Univ Montpellier, Marcoule, (France)
  • 3. Synchrotron SOLEIL, L'Orme des Merisiers, Departementale 128, 91190 Saint-Aubin, (France)

Description

New insights are provided about the formation mechanism of PuO2 nanoparticles (NPs) by investigating an unprecedented kinetic isotope effect observed during their hydrolytic synthesis in H2O or D2O and attributed to OH/OD zero point energy difference. The signature of a Pu(IV) oxo-hydroxo hexanuclear cluster, appearing as an important intermediate during the formation of the 2 nm PuO2 NPs (synchrotron SAXS/XAS), is further revealed indicating that their formation is controlled by H-transfer reactions occurring during hydroxo to oxo-bridge conversions. (authors)

Availability note (English)

Available from doi: http://dx.doi.org/10.1039/d2cc04990b

Additional details

Identifiers

DOI
10.1039/d2cc04990b;

Publishing Information

Journal Title
ChemComm
Journal Volume
58
Journal Issue
no.94
Journal Page Range
p. 13147-13150
ISSN
1359-7345

INIS

Country of Publication
United Kingdom
Country of Input or Organization
France
INIS RN
56004800
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Descriptors DEI
ABSORPTION SPECTROSCOPY; HYDROLYSIS; HYDROXIDES; ISOTOPE EFFECTS; KINETICS; NANOPARTICLES; PLUTONIUM; PLUTONIUM OXIDES; REACTION KINETICS; SMALL ANGLE SCATTERING; SYNCHROTRON RADIATION; SYNCHROTRONS; SYNTHESIS; TRANSFER REACTIONS; X-RAY DIFFRACTION; X-RAY SPECTROSCOPY
Descriptors DEC
ACCELERATORS; ACTINIDE COMPOUNDS; ACTINIDES; BREMSSTRAHLUNG; CHALCOGENIDES; CHEMICAL REACTIONS; COHERENT SCATTERING; CYCLIC ACCELERATORS; DECOMPOSITION; DIFFRACTION; DIRECT REACTIONS; ELECTROMAGNETIC RADIATION; ELEMENTS; HYDROGEN COMPOUNDS; KINETICS; LYSIS; METALS; NUCLEAR REACTIONS; OXIDES; OXYGEN COMPOUNDS; PARTICLES; PLUTONIUM COMPOUNDS; RADIATIONS; SCATTERING; SOLVOLYSIS; SPECTROSCOPY; TRANSURANIUM COMPOUNDS; TRANSURANIUM ELEMENTS

Optional Information

Notes
39 refs.