The interplay between acid-base properties and Fermi level pinning of a nano dispersed tungsten oxide - titania catalytic system.

A series of WO/TiO catalysts were synthesized, characterized, and evaluated for the NO selective catalytic reduction (SCR) with NH. Based on a wide range of characterization techniques, a detailed model was developed that describes the interfacial electron transfer between WO and TiO and defines a relationship between the acid-base properties of the catalytic surface and electronic structure modification. The electronic interactions at the WO/TiO interface were quantified using variations in the system's electronic structure.