Search for dissertations about: "photocatalytic mechanisms"

Showing result 1 - 5 of 6 swedish dissertations containing the words photocatalytic mechanisms.

  2. 1. MECHANISMS OF ENHANCED ACTIVITY OF MODEL TiO2/CARBON and TiO2/METAL NANOCOMPOSITE PHOTOCATALYSTS

    Author : Raja Sellappan; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Photocatalysis; graphite; solar energy conversion; graphene; localized surface plasmon resonance; photocatalytic mechanisms; nanocomposites; TiO2; carbon;

    Abstract : TiO2 is the most widely used photocatalyst for energy and environmental applications because of its outstanding physical and chemical properties. However, the quantum efficiency of TiO2 is greatly diminished by fast electron-hole pairs recombination and light absorption only in the UV region. READ MORE

  4. 2. Water film-mediated mineralogical transformations and photocatalytic reactions

    Author : N. Tan Luong; Jean-Francois Boily; Michael Holmboe; Alejandro Fernandez-Martinez; Umeå universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; mineral; water films; carbon dioxide; MgO; MnCO3; TiO2; hydroxylation; carbonation; oxidation; transformation; photocatalysis; Inorganic Chemistry; oorganisk kemi; nanomaterials; nanomaterial; Physical Chemistry; fysikalisk kemi;

    Abstract : Mineral particles capture water vapor in the atmosphere in the form of water films that are only few monolayers thick. Water films form nanoscale hydration environments that mediate a wide range of important reactions in nature and technology. READ MORE

  5. 3. Theoretical Studies on the Molecular Mechanisms of Photo-Catalytic Reactions on TiO2 Surfaces

    Author : Yongfei Ji; Yi Luo; Annabella Selloni; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; TiO2; First-principles; photocatalysis; Kemi; Chemistry;

    Abstract : Photocatalysis is a promising technology that can effectively convert the solar energyinto sustainable green energy. However, theoretical studies on the molecular mechanisms of photocatalytic reactions are rare. READ MORE

  6. 4. Development of Graphitic Carbon Nitride based Semiconductor Photocatalysts for Organic Pollutant Degradation

    Author : Jing Wang; Pär Jönsson; Anders Palmqvist; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; graphitic carbon nitride; visible light-driven photocatalyst; staggered band alignment; electron-hole pair separation; band edge position; Materials Science and Engineering; Teknisk materialvetenskap;

    Abstract : As a potential solution to the global energy and environmental pollution, design and synthesis of artificial photocatalysts with high activities have attracted increasing scientific interests worldwide. In recent years, the graphitic carbon nitride (g-C3N4) has shown new possible applications in the photocatalytic field due to its unique properties. READ MORE

  7. 5. Titanium Dioxide Photocatalysis in Biomaterials Applications

    Author : Yanling Cai; Ken Welch; Maria Strømme; Håkan Engqvist; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; titanium dioxide; photocatalysis; bioactivity; antibacterial effect; metabolic activity assay; biofilm; reactive oxygen species; disinfection kinetics; post-UV;

    Abstract : Despite extensive preventative efforts, the problem of controlling infections associated with biomedical materials persists. Bacteria tend to colonize on biocompatible materials and form biofilms; thus, novel biomaterials with antibacterial properties are of great interest. READ MORE