Titania Nanoscale Films and Surfaces: Surface Science Investigation of Structure and Properties
2014 (English)Doctoral thesis, comprehensive summary (Other academic)
This thesis presents surface science studies, investigating several aspects of titanium dioxide at the atomic scale. The greater part of this work is devoted to the preparation by chemical vapor deposition (CVD) of titanium(IV) tetraisopropoxide (TTIP) of ultrathin TiO2 or TiOx films on Au(111). Four ordered structures were growth and characterized. It was also demonstrated how the morphology of the film (wetting film vs island) can be tailored. The acquired knowledge about the CVD process was exploited to load nano porous gold with titania, enhancing its catalytic activity. The reactivity towards water adsorption of the titania structures on Au(111) was also investigated. Finally, part of this work concerned the studying of the behavior of water on the stoichiometric rutile TiO2(110) surface, combining the experiments with density-functional theory (DFT) calculations and (kinetic) Monte Carlo simulations. The main experimental techniques used in this work are low-energy electron diffraction (LEED), scanning tunneling microscopy (STM) and photoelectron spectroscopy (PES).
Place, publisher, year, edition, pages
Uppsala: Acta Universitatis Upsaliensis, 2014. , 71 p.
Digital Comprehensive Summaries of Uppsala Dissertations from the Faculty of Science and Technology, ISSN 1651-6214 ; 1154
Photoelectron spectroscopy, PES, XPS, scanning tunneling microscopy, STM, titania, titanium oxide, TiO2, Au(111), gold, water, H2O, rutile
Atom and Molecular Physics and Optics Condensed Matter Physics
IdentifiersURN: urn:nbn:se:uu:diva-224124ISBN: 978-91-554-8969-4OAI: oai:DiVA.org:uu-224124DiVA: diva2:715366
2014-06-13, Polhemsalen 10134, Ångström Laboratory, Lägerhyddsvägen 1, Uppsala, 13:15 (English)
Weaver, Jason F., Prof
Sandell, Anders, Prof.Borg, Anne, Prof.
List of papers