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Interfacial Dynamics in Radioactive Environments and Materials (IDREAM)

Interfacial Structure & Reactivity

interfacial structure and reactivity

Research objective:

Extend fluid phase dynamics to nucleation, particle growth, and interfacial reactivity in highly alkaline systems of concentrated electrolytes.

Science questions:

  • What controls the interfacial chemical dynamics of aluminum (oxy)hydroxide growth and dissolution, in particular the process(es) involving under-coordinated Al species during gibbsite crystallization?
  • What are the underlying elementary steps of dissolution? How do step edge structures evolve during dissolution of gibbsite from neutral to high pH? Can we connect microscopic to macroscopic dissolution kinetics?

Research progress:

This year, we have developed a detailed understanding of mechanisms of phase transformation between amorphous aluminum gels and crystalline oxyhydroxides such as gibbsite in highly alkaline solutions.

IDREAM Research Center


Master molecular–to–mesoscale chemical and physical phenomena at interfaces in complex environments characterized by extremes in alkalinity and low-water activity, and driven far from equilibrium by ionizing radiation.

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