The reactivity, phase transformations, and the degree of aggregation of iron oxide minerals are fundamentally linked, with an increase in aggregation generally associated with a decrease in redox reaction rates and an increase in phase transformation rates from less stable phases to more stable phases. Techniques like dynamic light scattering and cryogenic transmission electron microscopy are used to quantify aggregation state as a function of solution conditions. Results tracking the kinetics of phase transformation and degradation of model pollutant molecules as a function of changing aqueous solution conditions will be presented.

Iron oxides in reactive systems

249th National Meeting (2015)

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