Rodney Ewing

Stanford University

Projects

The interaction between uranium(VI) and magnetite surfaces: a combined STM and electron transfer calculation approach

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Frances Skomurski

Project type

Exploratory Research

The interaction between iron-oxide mineral surfaces and uranium(VI) in solution is of interest because of the potential for reducing radionuclide mobility by sorption and/or reduction. The reduction…

Reduction of U6+ by magnetite and the rate of electron transfer

Lead Institution

Pacific Northwest National Laboratory

Principal Investigator

Frances Skomurski

Project type

Large-Scale EMSL Research

The reductive adsorption of uranium(VI) by ferrous iron in magnetite (Fe3O4) is an important process for reducing the mobility of contaminants in groundwater and for sequestering radionuclides in the…

Probing cation disordering in Gd2Ti2O7 pyrochlore by X-ray Photoelectron Spectroscopy

Lead Institution

University of Michigan

Principal Investigator

Jie Lian

Project type

Exploratory Research

An order-disordered structural transition occurs in the pyrochlore structure type as a result of disordering at cation sublattices as well as anion disorder, which mainly leads to the dramatic…