Model Hybrid Materials

Co-catalyst/photoabsorbing materials are critically important to photochemical conversion of light to products. The addition of an electrocatalyst to the surface of a semiconductor creates a complex interface whose photochemical properties are dependent on the surface structure and chemistry. A deeper understanding of these interfaces begins with appropriate synthesis and characterization under ultrahigh vacuum conditions. We use temperature programmed desorption (TPD) and reflection absorption infrared spectroscopy (RAIRS), along with other surface science techniques, to understand the active sites and cooperative behaviour of this complex surface under illumination.