Journal
COMPUTATIONAL MATERIALS SCIENCE
Volume 184, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.commatsci.2020.109903
Keywords
Electronic structure; Metal-organic framework (MOF); DFT; Actinides
Categories
Funding
- Center for Hierarchical Waste Form Materials (CHWM), an Energy Frontier Research Center (EFRC) - United States Department of Energy Office of Basic Energy Sciences [DESC0016574]
Ask authors/readers for more resources
Metal-organic frameworks (MOFs) have recently gained wide interest as candidate materials for nuclear waste immobilization. While the fundamental thermodynamic properties, such as the substitution energies, determine the favorability of radionuclide sequestration in a MOF matrix, studies of MOF electronic structure reveal the role of d-, and/or f-electrons on changes in physical properties of actinide-containing materials. We use density functional theory (DFT) calculations to investigate the electronic structures of Zr-, Th-, and U-MOFs, including their electronic band structures and, where appropriate, their magnetic properties. We employ various DFT methods including DFT + U, collinear spin-polarization, spin-orbit coupling, and various flavors of exchange-correlation functionals to assess the robustness to the specific exchange-correlation functional. Unlike the Zr-, and Th-MOFs, the U-MOF is found to be sensitive to electron localization and spin; hence we explore the magnetic structure of the U-MOF in further detail.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available