In situ Spectroscopic Studies of Transition Metal Macrocycles as Catalysts for the Electrochemical Reduction of Oxygen. Annual Report December 1986-November 1987

摘要

The vibrational, electronic, and structural properties of transition metal macrocycles adsorbed on electrode surfaces are being investigated with an array of in situ spectroscopic techniques. These include potential difference FTIR, electrochemically modulated infrared spectroscopy, EMIRS, electromodulated reflection absorption spectroscopy in the UV-vis spectral region, Mossbauer spectroscopy in the transmission, and conversion electron modes and X-ray absorption fine structure. The information arising from the use of these techniques is being complemented by conventional electrochemical measurements, and scanning tunneling microscopy as a means of imaging transition metal macrocycles adsorbed on metal surfaces including infrared, ultraviolet-visible. Mossbauer and X-ray absorption fine structure. These studies are aimed at gaining a basic understanding of the factors that control the electrocatalytic activity of transition metal macrocycles adsorbed on electrode surfaces for the electrochemical reduction of dioxygen.