Most environmentally related physiochemical processes take place at surfaces of solids (often a mineral or metal oxide) that are wet or moist. The ubiquitous aqueous adlayer formed on solids in contact with most atmospheres is of principal importance in, e.g., environmental sciences, biotechnology, geochemistry and corrosion. A research programme has been established which will enable complementarily acting research groups to perform a fully coherent research effort on the solid/atmosphere interfacial regime. The main aims are:
- To obtain a molecular understanding of formation and properties of the aqueous adlayer on single and polycrystalline metal oxide model surfaces. - To explore the general role of the liquid/gas interface in atmospheric corrosion. - To extend our molecular understanding of the role of SO2 on initial atmospheric corrosion on model oxides with high, intermediate and low SO2 reactivity. - To develop and install an environmental chamber at beam-line I511 at the national synchrotron radiation facility MAX-lab, Lund University, allowing in situ analysis of the metal oxide surface during exposure to humidified air at atmospheric pressure with x-ray absorption spectroscopy (XAS) and soft x-ray emission spectroscopy (SXES).
When attaining full coherence this unique Frame programme will include competence for molecular in situ information of the solid/liquid interface (XAS, SXES, infrared reflection absorption spectroscopy, IRAS; quartz crystal microbalance QCM; scanning tunnelling microscopy, STM) and the liquid/gas interface (sum frequency generation, SFG).
Atmospheric corrosion, In situ studies, Infrared reflection absorption spectroscopy (IRAS), Iron, Quartz crystal microbalance (QCM), Sum frequency generation (SFG)