Search for dissertations about: "Anatase"

Showing result 1 - 5 of 24 swedish dissertations containing the word Anatase.

  2. 1. Computational Investigation of Dye-Sensitized Solar Cells

    Author : Mattias Nilsing; Sten Lunell; Lars Ojamäe; Petter Persson; Sven Stafström; Uppsala universitet; []
    Keywords : Quantum chemistry; titanium dioxide; anatase; rutile; pyridine; perylene; nanostructured; interface; electronic coupling; electron injection; quantum chemistry; phosphonic acid; Kvantkemi;

    Abstract : Interfaces between semiconductors and adsorbed molecules form a central area of research in surface science, occurring in many different contexts. One such application is the so-called Dye-Sensitized Solar Cell (DSSC) where the nanostructured dye-semiconductor interface is of special interest, as this is where the most important ultrafast electron transfer process takes place. READ MORE

  4. 2. Quantum chemical characterization of oxide nanoparticles and interactions on their surfaces

    Author : Marta Galynska; Beräkningskemi; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; cluster models; TiO2 nanoparticles; anatase; rutile; brookite; group-IV oxides; DFT;

    Abstract : Titanium dioxide and related oxide materials have been investigated using density functional theory calculations. Nanocrystalline particles were modelled by a finite cluster approach. READ MORE

  5. 3. Hydrolytic Synthesis and Physicochemical Properties of TiO2 Nanoparticles: Fundamentals and Applications

    Author : Jenny Perez-Holmberg; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Titanium dioxide TiO2 ; Nanoparticles; Synthesis; Hydrolysis; Titanium tetrachloride TiCl4 ; Anatase; Brookite; DLS; ES-SMPS; XRD; Collective diffusion; Interfacial processes;

    Abstract : Titanium dioxide (TiO2) nanoparticles were synthesized via the hydrolysis of TiCl4 in order to produce clean, surfactant-free oxide surfaces. By controlling the synthesis and aging conditions, stable particles with well-defined size distributions were obtained. READ MORE

  6. 4. Effect of surface characteristics on cellular adherence and activity

    Author : Marjan Dorkhan; Malmö högskola; []
    Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Bacteria; microbial biofilm; dental implant; streptococci; oral bacteria; salivary pellicle; early colonizers; titanium oxide; microbial activity; oral keratinocytes; gingival fibroblasts; cell attachment; surface modification; anodic oxidation; anatase;

    Abstract : Ersättning av förlorade tänder med tandimplantat är numera en vanlig behandlingsmetod med generellt goda resultat. Antalet implantatsystem på den internationella marknaden har ökat kraftigt under senare år. READ MORE

  7. 5. Self-Assembling Surfactant Aggregates for Synthesis of Nanomaterials

    Author : Martin Andersson; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; self-assembly; Ag; photocatalysis; nanoparticles; surfactants; liquid crystals; microemulsions; rutile; mesoporous materials; CaCO3; anatase; TiO2;

    Abstract : The main objective of this thesis was to study how surfactant assemblies can be used as templates to form inorganic nanomaterials. Both water-in-oil microemulsions and liquid crystalline phases have been used as structure directing agents. READ MORE