Network-like arrangement of mixed-valence uranium oxide nanoparticles after glutathione-induced reduction of uranium(vi)

Chemical Communications : Chem Comm
Jerome KretzschmarThorsten Stumpf

Abstract

Glutathione (GSH), a ubiquitous intracellular reducing tripeptide, is able to reduce hexavalent uranium, U(vi), to its tetravalent form, U(iv), in aqueous media in vitro, inducing the formation of nanocrystalline mixed-valence uranium oxide particles. After the initial reduction to U(v) and subsequent dismutation, the yielded U(iv) rapidly hydrolyses under near-neutral conditions forming 2-5 nm sized nanoparticles. The latter further aggregate to 20-40 nm chain-like building blocks that finally arrange as network-like structures.

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Citations

Aug 16, 2018·Chemical Communications : Chem Comm·Kristina O KvashninaMarc Verwerft
Aug 12, 2020·Nature Communications·Zezhen PanRizlan Bernier-Latmani
Mar 10, 2020·Inorganic Chemistry·Jerome KretzschmarThorsten Stumpf

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Methods Mentioned

BETA
NMR
transmission electron microscopy
light microscopy
electron diffraction
X-ray

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