Previous research

Authors: Luiza Notini, Katrin Schulz, L. Joëlle Kubeneck, Andrew R. C. Grigg, Katherine A. Rothwell, Giulia Fantappiè, Laurel K. ThomasArrigo, and Ruben Kretzschmar 

This study introduces a novel method for tracking iron mineral transformations in soils and sediments. Using 57Fe-labeled ferrihydrite and 57Fe Mössbauer spectroscopy, the approach reveals pathways for ferrihydrite transformation in contact with complex matrices. 

Authors: Luiza Notini, Laurel K. ThomasArrigo, Ralf Kaegi, and Ruben Kretzschmar

In redox-affected soils, electron transfer between aqueous Fe(II) and solid-phase Fe(III) drives mineral transformations. This study shows that goethite presence enhances ferrihydrite’s conversion to goethite when reacting with Fe(II). Using 57Fe Mössbauer spectroscopy, we demonstrated that coexisting goethite promotes its own formation via electron transfer and nucleation pathways.

Authors: Luiza Notini, Drew E. Latta, Anke Neumann, Carolyn I. Pearce, Michel Sassi, Alpha T. N’Diaye, Kevin M. Rosso, and Michelle M. Scherer

This study examined Fe(II)-induced passivation of Fe(III) oxides, showing that prolonged exposure to Fe(II) inhibits electron transfer to goethite. Using 57Fe Mössbauer spectroscopy, we demonstrated that a passivation layer forms on goethite, but removing this layer can partially restore electron transfer.

Authors: Luiza Notini, James M. Byrne, Elizabeth J. Tomaszewski, Drew E. Latta, Zhe Zhou, Michelle M. Scherer, and Andreas Kappler

This study demonstrates that surface defects in goethite significantly enhance microbial reduction by Geobacter sulfurreducens, highlighting that even minor surface variations in iron minerals can impact their bioavailability in anoxic environments. 

Authors: Luiza Notini, Drew E. Latta, Anke Neumann, Carolyn I. Pearce, Michel Sassi, Alpha T. N’Diaye, Kevin M. Rosso, and Michelle M. Scherer

This study demonstrates that surface defects in goethite significantly enhance Fe(II)–Fe(III) electron transfer, suggesting that environmental redox interactions are heavily influenced by the mineral's defect structure and diagenetic history. 

Authors: Luiza Notini, Matthew Nargozanski, and Michelle M. Scherer

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