| AVS 66th International Symposium & Exhibition | |
| Fundamental Discoveries in Heterogeneous Catalysis Focus Topic | Friday Sessions |
| Session HC+SS-FrM |
| Session: | Catalysis at Complex Interfaces |
| Presenter: | Samuel Tenney, Brookhaven National Laboratory |
| Authors: | S.A. Tenney, Brookhaven National Laboratory C. Eads, Brookhaven National Laboratory L.O. Mark, University of Colorado at Boulder V. Lee, University of North Texas M. Wang, Brookhaven National Laboratory J.W. Medlin, University of Colorado at Boulder J.A. Kelber, University of North Texas D.J. Stacchiola, Brookhaven National Laboratory |
| Correspondent: | Click to Email |
In this talk we present the first reported photothermal infrard (PTIR) spectra and hyperspectral images of ultrathin bilayer silicate films with a spatial resolution better than 10nm and compare this with traditional infrared reflection absorption spectroscopy (IRRAS) of the same surface. The growth of the ultrathin bilayer silicates on Pd(100) and Pd(111) surfaces was observed in real-time with an in-situ low energy electron microscope (LEEM) capable of selected area low energy electron diffraction (μ-LEED). The samples were further probed with ambient pressure X-ray photoelectron spectroscopy (AP-XPS), temperature programmed desorption (TPD) and high resolution electron energy loss spectroscopy (HREELS). The chemical activity and enhanced selectivity of these model silicate/Pd catalysts will be discussed.