Search for dissertations about: "titania"

Showing result 1 - 5 of 44 swedish dissertations containing the word titania.

  1. 1. Photonic crystals and photocatalysis Study of titania inverse opals

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Delphine Misao Lebrun; Uppsala universitet.; [2016]
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; photocatalysis; titania; inverse opal; photonic crystal; optics; Engineering Science with specialization in Solid State Physics; Teknisk fysik med inriktning mot fasta tillståndets fysik;

    Abstract : Due to an increase of human activity, an increase health risk has emerged from the presence of pollutants in the environment. In the transition to renewable and sustainable life style, treatment of pollutants could support the shifting societies. READ MORE

  2. 2. Titania Nanoscale Films and Surfaces Surface Science Investigation of Structure and Properties

    University dissertation from Uppsala : Acta Universitatis Upsaliensis

    Author : Davide Ragazzon; Uppsala universitet.; [2014]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Photoelectron spectroscopy; PES; XPS; scanning tunneling microscopy; STM; titania; titanium oxide; TiO2; Au 111 ; gold; water; H2O; rutile;

    Abstract : 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). READ MORE

  3. 3. Development of syntheses for nanostructured titania and silica

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Gunnar Örn Simonarson; [2019]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; lithium intercalation; nanoparticles; X-ray characterization; mesoporous silica; mesoporous titania; spray deposition; Titanium dioxide;

    Abstract : Nanostructured titania is of great interest for a variety of energy and environmental applications, including conversion of solar energy, for energy storage systems and removal of organic pollutants in water and air. Titania is composed of earth abundant elements, it is environmentally friendly and chemically stable which makes it an attractive material to utilize. READ MORE

  4. 4. Development of new nanomaterials syntheses for mesostructured TiO2 and SiO2

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Erik Nilsson; [2011]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; X-ray diffraction; microemulsion synthesis; silica; high-resolution electron microscopy; gelation; nonionic amphiphiles; EISA; titania; mesostructured; waterglass;

    Abstract : Mesostructured materials is a class of materials within the concept nanomaterials andcharacterized by structural features on the length scale 2-50 nm. This group of materials isinteresting for several applications such as, membrane and separation technology, heterogeneouscatalysis, controlled release, adsorption of pollutants, solar energy conversion, electrode materialsetc. READ MORE

  5. 5. Surface Modifications and Applications of Aqueous Silica Sols

    University dissertation from ; Chalmers tekniska högskola; Gothenburg

    Author : Peter Greenwood; [2010]
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; aqueous; silica sol; titania; silane; Surface modification; colloidal silica; applications;

    Abstract : Methods of modifying the surface of the particles of colloidal silica were developed and the effects of surface modification on the properties of colloidal silica were studied.Gamma-glycidoxypropyltrimethoxysilane (GPTMS) readily reacts with water to yield a hydrolysed silane that reacts readily with the silica surface. READ MORE