In this project we aim to understand the mechanisms of the initial stages of surface corrosion and redox reactions that drive surface environmental chemistry, electrochemical, and catalysis processes. Reactions on iron surfaces are measured at the gas/solid and liquid/solid interface using vacuum and ambient spectroscopy and microscopy, connecting in situ surface chemistry with morphology changes. We developed a new method utilizing surface vibrational spectroscopy (PM-IRRAS) to measure spontaneous reactions at the air/liquid/solid interface. PM-IRRAS measurements at the air/liquid/solid interface are corroborated with XPS and in situ AFM measurements to investigate these redox and corrosion reactions.

Related Publications:

  • de Alwis, C.; Wahr, K.; Perrine, K. A. Influence of Cations on CO2 Direct Capture and Mineral Film Formation: The Role of KCl and MgCl2 at the Air/Electrolyte/Iron Interface. J. Phys. Chem. A, 2024 128 (20), 4052-4067.
  • de Alwis, C.; Trought, M.; Lundeen, J.; Perrine, K. A. Effect of Cations on the Oxidation and Atmospheric Corrosion of Iron Interfaces to Minerals. J. Phys. Chem. A, 2021.
  • de Alwis, C.; Perrine, K. A. In Situ PM-IRRAS at the Air/Electrolyte/Solid Interface Reveals Oxidation of Iron to Distinct Minerals. J. Phys. Chem. A., 2020 124 (33), 6735-6744. doi/10.1021/acs.jpca.0c03592
  • de Alwis, C.; Leftwich, T. R..; Perrine, K. A. New Approach to Simultaneous In Situ Measurement of the Air/Liquid/Solid Interface using PM-IRRAS. Langmuir, 2020 36 (13), 3404-3414.