Sökning: "organic adsorbates"

Visar resultat 6 - 10 av 12 avhandlingar innehållade orden organic adsorbates.

1. 6. Synchrotron Radiation Studies of Free and Adsorbed Molecules

   Författare :Zhuo Bao; Maria Novella Piancastelli; Svante Svensson; Denis Ceolin; Edwin Kukk; Uppsala universitet; []
   Nyckelord :Physics; Synchrotron radiation; Auger electron spectroscopy; one-step model; Post Collision Interaction PCI ; theoretical modeling; molecules; adsorbates; UPS; XPS; XAS; NEXAFS; Fysik;

   Sammanfattning : This thesis contains two parts. The first part concerns the research work on free molecules using synchrotron-radiation-related techniques. Auger electron spectra of two free open-shell molecules, O2 and NO, were studied experimentally and theoretically. LÄS MER

3. 7. Tailoring residue-derived carbon materials for the removal of wastewater contaminants : adsorption and surface properties

   Författare :Mirva Niinipuu; Stina Jansson; Jean-Francois Boily; Erik Rosenbaum; Magnus Bergknut; Capucine Dupont; Umeå universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Adsorption; hydrochar; HTC; chemical activation; wastewater; pharmaceuticals; metals; surface properties; biobased residues;

   Sammanfattning : The availability of effective, low-cost wastewater treatment is necessary for increased water recycling and the prevention of environmental pollution on a global scale. Adsorption on activated carbons is commonly applied in wastewater treatment, but the high cost of conventional activated carbons limits the use of this technique. LÄS MER

4. 8. Molecules and Clusters on Oxide Surfaces

   Författare :Evren Ataman; Synkrotronljusfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : In this thesis X-ray photoelectron spectroscopy, X-ray absorption spectroscopy, scanning tunneling microscopy,and density functional theory have been used to study the fundamental interactions between model oxidesurfaces and either organic, mixed organic/inorganic, or purely inorganic adsorbate layers. As model oxidesurfaces have served the rutile TiO2(110) surface and an in-situ grown iron oxide film supported by a Pt(111)surface. LÄS MER

5. 9. Surface-Induced Modification of Supported Late Transition Metal Complexes

   Författare :Olesia Snezhkova; Synkrotronljusfysik; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; N-heterocyclic carbene palladium complexes; X-ray photoelectron spectroscopy; electron charge transfer; iron phthalocyanine; catalysis; X-ray absorption spectroscopy;

   Sammanfattning : The work presented in this thesis addresses the investigation of the electronic, magnetic, and structural properties of late transition metal complexes supported on various surfaces. The research is aimed at studying the interaction between the molecules and the support, together with the intermolecular interaction. This knowledge is essential e.g. LÄS MER

7. 10. Temperature programmed studies of molecular assemblies on gold

   Författare :Mattias Östblom; Sven Oscarsson; Linköpings universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

   Sammanfattning : This thesis investigates the properties of ultra-thin layers of organic molecules deposited at or adsorbed onto thin films of gold. The two main experimental techniques used in this thesis work are Temperature Programmed Desorption-Infrared Reflection Absorption Spectroscopy (TPD-IRAS), an excellent technique to probe the structure and orientation of molecular layers on metallic substrates, and Temperature Programmed Desorption-Mass Spectroscopy (TPD-MS), a very useful tool to study the energetics of molecular layers and adsorbates on solid surfaces. LÄS MER