Water on actinide dioxide surfaces: a review of recent progress

G Wang, ER Batista, P Yang - Applied Sciences, 2020 - mdpi.com
The fluorite structured actinide dioxides (AnO2), especially UO2, are the most common
nuclear fuel materials. A comprehensive understanding of their surface chemistry is critical …

Theoretical insights into the hydroxyl-promoted H2 releasing reaction after H2O splitting on Pu-oxide surfaces

L Zhang, B Sun, Q Zhang, H Liu, H Song - Journal of Nuclear Materials, 2023 - Elsevier
Abstract Within DFT+U-D3 scheme, we systematically investigate the reaction of H 2 O on
Pu-oxide surfaces to reveal the effects of* H/* OH produced by water splitting on subsequent …

Ab initio study of the adsorption of O, O2, H2O and H2O2 on UO2 surfaces using DFT+ U and non-collinear magnetism

I Arts, R Saniz, G Baldinozzi, G Leinders… - Journal of Nuclear …, 2024 - Elsevier
In order to model correctly the corrosion of spent nuclear fuel under disposal conditions, it is
important to understand its behavior in the presence of oxidants. To advance in this …

The adsorption thermodynamics of H2O and CO2 on PuO2 (1 1 1) surface: A comparative study based on DFT+ U-D3

L Zhang, B Sun, Q Zhang, H Liu, K Liu, H Song - Applied Surface Science, 2021 - Elsevier
The adsorption thermodynamics of active molecules on PuO 2 surface are very important for
the long-term storage and surface corrosion of Pu. Here, a comparative study is performed …

Polaron modulation mechanism of H2O and CO2 adsorption on PuO2 (111) surface

L Zhang, B Sun, Q Zhang, H Liu, K Liu, H Song - Applied Surface Science, 2020 - Elsevier
The polarons induced by interactions between excess charges and lattice distortions play an
important role in surface chemical reactivity of actual oxides. The impacts of electron and …

[HTML][HTML] Reactions of NO and H2O on the PuO2 {111} surface: A DFT study

X Han, N Kaltsoyannis - Journal of Nuclear Materials, 2023 - Elsevier
The effect of the Hubbard U parameter is explored in periodic boundary condition PBE+U
calculations of a variety of properties of bulk PuO 2 and its {111} surface. Comparison is …

Water accelerates parabolic oxidation of Pu-Ga alloy: from mechanism to model

L Zhang, B Sun, Q Zhang, G Li, HL Yu, H Liu… - Applied Surface …, 2024 - Elsevier
The moisture accelerated oxidation can endanger the safety storage of plutonium, but
experiments haven't provided a complete mechanism explanation, let alone a prediction …

The adsorption of carbon and nitrogen oxides on the PuO2 {110} surface: A DFT+ U study

JL Chen, N Kaltsoyannis - Journal of Nuclear Materials, 2024 - Elsevier
The adsorptions of CO, CO 2, N 2 O, NO and NO 2 on the PuO 2 {110} surface have been
studied using density functional theory with a Hubbard U correction. Different approaching …

Computational Study of Plutonium–Americium Mixed Oxides (Pu0.92Am0.08O2–x); Water Adsorption on {111}, {110}, and {100} Surfaces

JL Chen, N Kaltsoyannis - The Journal of Physical Chemistry C, 2020 - ACS Publications
Hubbard U-corrected generalized gradient approximation density functional theory is used
to study the surface properties of plutonium–americium mixed dioxides (Pu-Am MOX) …

Theoretical study on the hydrogen distribution and diffusion at the PuO 2/α-Pu 2 O 3 interface

H Huang, M Zhu, M Guo, L Li, Y Li - RSC advances, 2024 - pubs.rsc.org
The interface is a region in the crystal that significantly changes various characteristics.
There must be an interface between oxides of different valence states in the surface oxide …