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​​​Actinide Science at Notre Dame

​​Dr. Hixon's overarching research interests revolve around how processes at the mineral-water interface control actinide behavior. By using a combination of wet chemistry, instrumental, and modeling techniques, members of the Hixon group are able to understand actinide aqueous speciation, the properties of mineral surfaces, and how the two interact.

Copyright © Amy E. Hixon. All rights reserved.

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Evidence for non-electrostatic interactions between a pyrophosphate-functionalized uranyl peroxide nanocluster and iron (hydr)oxide minerals.

Luke R. Sadergaski, Samuel N. Perry, Luke R. Tholen, and Amy E. Hixon

Environmental Science: Processes & Impacts, DOI: 10.1039/C9EM00139E.


Calcium-facilitated aggregation and precipitation of the uranyl peroxide nanocluster U60 in the presence of Na-montmorillonite.

Luke R. Sadergaski, Meena Said, and Amy E. Hixon

Environmental Science & Technology, DOI: 10.1021/acs.est.8b06731.


Kinetics of neptunium sorption and desorption in the presence of aluminum (hydr)oxide minerals: Evidence for multi-step desorption at low pH.

Teresa Baumer and Amy E. Hixon

Journal of Environmental Radioactivity, DOI: 10.1016/j.jenvrad.2019.05.006.


Extension of the Plutonium Oxide Nanocluster Family to Include {Pu16} and {Pu22}.

Ginger E. Sigmon and Amy E. Hixon

Chemistry - A European Journal​, DOI: 10.1002/chem.201805605.


Plutonium environmental chemistry: Mechanisms for the surface-mediated reduction of Pu(V/VI).

Amy E. Hixon and Brian A. Powell

Environmental Science: Processes & Impacts, DOI: 10.1039/C7EM00369B.


Kinetics of europium sorption to four different aluminum (hydr)oxides: Corundum, γ-alumina, bayerite, and gibbsite.

Teresa Baumer and Amy E. Hixon

Journal of Environmental Radioactivity, DOI: 10.1016/j.jenvrad.2018.09.004.


Kinetics of uranyl peroxide nanocluster (U60) sorption to goethite.

Luke R. Sadergaski and Amy E. Hixon

Environmental Science & Technology​, DOI: 10.1021/acs.est.8b02716


Uranyl peroxide nanocluster (U60) persistence and sorption in the presence of hematite.

Luke R. Sadergaski, Wynn Stoxen, and Amy E. Hixon

Environmental Science & Technology, DOI: 10.1021/acs.est.7b06510


Comparison of europium and neptunium adsorption to aluminum (hydr)oxide minerals.

Teresa Baumer, Patricia Kay, and Amy E. Hixon

Chemical Geology , DOI:10.1016/j.chemgeo.2017.02.006