for an Invited Paper for the MAR11 Meeting of The American Physical Society New Optical Absorption Bands in Atomic Layer Superlattices1 JAMES ECKSTEIN, Depertment of Physics, University of Illinois, Urbana, IL Using atomic layer-by-layer molecular beam epitaxy, atomic layer superlattices can be constructed that exhibit new electronic, optical and lattice effects not present in the individual co...

343 ©2013 Society For Biomaterials

Titanium oxide is a heterogeneous catalyst whose efficient photoinduced activity, related to some of its allotropic forms, paved the way for its widespread technological use. Here, we offer a comparative analysis of the use of titanium oxide as coating for materials in biomedical devices. First, we introduce the photoinduced catalytic mechanisms of TiO2 and their action on biological environmen...

In this work we have investigated the role of a porous carbon material used as photocatalyst itself, and catalyst support in a carbon/titania composite towards the photodegradation of phenol, and compared the results to that of bare titanium oxide. The immobilization of titania on an activated carbon provoked an acceleration of the degradation rate under UV irradiation, which is likely attribut...

Reactions of a well-characterized polycrystalline titanium surface with oxygen and water molecules at 150–850 K were studied in UHV by X-ray photoelectron spectroscopy ( XPS), thermal desorption spectroscopy (TDS) and Fourier transform reflectance–absorption infrared spectroscopy (FT-RAIRS). At 150 K, 2 oxidizes Ti0 to TiIV, TiIII and TiII, but Ti exposure to H2O at this temperature produces on...

A characterization of Ti-Beta zeolites synthesized under various conditions as well as an investigation of their photocatalytic properties for the reduction of CO2 with H2O at 323 K to produce CH4 and CH3OH were carried out. In situ XAFS spectra measurements indicated that a highly dispersed tetrahedral titanium oxide species was present in the zeolite framework and an increase in the coordinat...