Sökning: "Catalysis"

Visar resultat 6 - 10 av 671 avhandlingar innehållade ordet Catalysis.

  1. 6. Nanoplasmonic sensing: from biology to catalysis

    Författare :Elin Maria Kristina Larsson; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; hole-mask colloidal lithography; colloidal lithography; nanoring; QCM-D.; quartz crystal microbalance; nanodisk; catalysis; LSPR; Localized Surface Plasmon Resonance; biosensing;

    Sammanfattning : Our continuously increasing concerns about our health, safety, environment and climate has brought about a need for more sophisticated sensors that enable reliable detection of a variety of events. Sensors are today omnipresent in daily life. LÄS MER

  3. 7. Hydrogen Storage Materials : Design, Catalysis, Thermodynamics, Structure and Optics

    Författare :Carlos Moysés Graça Araújo; Rajeev Ahuja; Ole Martin Løvvik; Uppsala universitet; []
    Nyckelord :Materials science; Hydrogen-storage materials; Density functional theory; Molecular dynamics; Catalysis; Thermodynamics; Optics; Materialvetenskap;

    Sammanfattning : Hydrogen is abundant, uniformly distributed throughout the Earth's surface and its oxidation product (water) is environmentally benign. Owing to these features, it is considered as an ideal synthetic fuel for a new world energetic matrix (renewable, secure and environmentally friendly) that could allow a sustainable future development. LÄS MER

  4. 8. Stepping into Catalysis : Kinetic and Mechanistic Investigations of Photo- and Electrocatalytic Hydrogen Production with Natural and Synthetic Molecular Catalysts

    Författare :Daniel Streich; Leif Hammarström; Reiner Lomoth; Clifford Kubiak; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Artificial photosynthesis; photocatalysis; electrocatalysis; hydrogen production; proton reduction; hydrogenase; iron complex; active site model; catalytic mechanism; transient absorption; spectroscopy; electrochemistry; cyclic voltammetry; Kemi med inriktning mot kemisk fysik; Chemistry with specialization in Chemical Physics;

    Sammanfattning : In light of its rapidly growing energy demand, human society has an urgent need to become much more strongly reliant on renewable and sustainable energy carriers. Molecular hydrogen made from water with solar energy could provide an ideal case. LÄS MER

  5. 9. Microkinetic Modeling of Nanoparticle Catalysis using Density Functional Theory

    Författare :Mikkel Jørgensen; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Density Functional Theory; Methane oxidation; Mean-field approximation; Microkinetic modeling; Kinetic Monte Carlo; Nanoparticles; Entropy; CO oxidation; Catalysis;

    Sammanfattning : Heterogeneous catalysis is vitally important to modern society, and one path towardsrational catalyst design is through atomistic scale understanding. The atomistic scalecan be linked to macroscopic observables by microkinetic models based on first-principlescalculations. LÄS MER

  7. 10. Graphene: Applications in Surface Science Studies

    Författare :Virginia Boix; NanoLund: Centre for Nanoscience; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Graphene; Surface Science; EBID; Catalysis; undercover catalysis; XPS; APXPS; STM;

    Sammanfattning : This thesis addresses how graphene can be a valuable asset for surface science studies. Using a combination of X- ray photoelectron spectroscopy, scanning tunneling microscopy, and low-energy electron diffraction, we take advantage of graphene’s sensitivity to changes in its chemical environment to obtain an atomic scale understanding of different reactions occurring above and below the film. LÄS MER