Sökning: "mesoporous silica nanoparticles"

Visar resultat 1 - 5 av 28 avhandlingar innehållade orden mesoporous silica nanoparticles.

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

    Författare :Gunnar Örn Simonarson; Chalmers tekniska högskola; []
    Nyckelord :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;

    Sammanfattning : 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. LÄS MER

  3. 2. Nanostructured Catalysts and Electrode Materials for PEM Fuel Cells

    Författare :Kjell Wikander; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PEMFC; mesoporous; alkylthiol; alkylamine; carbon; microemulsion; Fuel cell; surfactants; nanoparticles; electron microscopy; Pt; nanocasting; silica; cathode; phase transfer method; oxygen reduction;

    Sammanfattning : The Polymer Electrolyte Membrane Fuel Cell (PEMFC) is a promising energy converting technology for powering automotives and electrical equipment using hydrogen gas as fuel and producing water as the only exhaust. The active carbon-supported platinum catalyst present in the electrodes limits the maximum power generation in state-of-the-art PEMFCs due to platinum’s poor activity for the oxygen reduction reaction (ORR) taking place at the cathode. LÄS MER

  4. 3. Biocide Release and Use of Mesoporous Materials as Support for Transition Metal Catalysts

    Författare :PAUL HANDA; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; nanoparticles; immobilization; silica; controlled release; carbon; polymer; swelling; Heck reaction; interaction; mesoporous materials; Medetomidine; Sonogashira reaction.; homogeneous catalysts;

    Sammanfattning : .... LÄS MER

  5. 4. Mesoporous Building Blocks : Synthesis and Characterization of Mesoporous Silica Particles and Films

    Författare :Emma M. Björk; Magnus Odén; Fredik Söderlind; José Córdoba; Mika Lindén; Linköpings universitet; []
    Nyckelord :;

    Sammanfattning : Catalyst supports, drug delivery systems, hosts for nanoparticles, and solar cells are just some examples of the wide range of exciting applications for mesoporous silica. In order to optimize the performance of a specific application, controlling the material’s morphology and pore size is crucial. LÄS MER

  7. 5. Cobalt catalyst supports for Fischer-Tropsch synthesis

    Författare :Fatima Pardo-Tarifa; Lars J. Pettersson; Olga Guerrero; KTH; []
    Nyckelord :Silica; alumina; zirconium; cerium; mesoporous materials; nanoparticles; microemulsion; atrane route; cobalt catalyst; Fischer-Tropsch synthesis; Chemical Engineering; Kemiteknik;

    Sammanfattning : In the Fischer-Tropsch (FT) synthesis, CO and H2 (synthesis gas) are converted into hydrocarbons that can be further upgraded to high-quality fuels and chemicals. Different carbon sources such as natural gas, coal and biomass can be used as feed-stocks for the synthesis gas. LÄS MER