Search for dissertations about: "Platinum Clusters"

Showing result 1 - 5 of 6 swedish dissertations containing the words Platinum Clusters.

  2. 1. Platinum-free Electrocatalysts : Design, Synthesis, and Energy Applications

    Author : Yi Yang; Inna Soroka; Carina Lagergren; Serhiy Cherevko; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Pt-free electrocatalysts; γ-radiation induced synthesis; size; morphology; structure; and composition of nanocatalysts; ORR; catalytic activity and durability; formation mechanism of catalyst materials in aqueous solutions.; Kemi; Chemistry;

    Abstract : Pt is one of the most commonly used catalysts for green energy applications, such as fuel cells, electrolyzers, and dye-sensitized solar cells. Although enormous effort has been put into improving the catalytic activity and minimizing the usage of Pt in the catalysts, the low abundance and high price of Pt still limit the large-scale commercialization of green energy devices and facilities. READ MORE

  4. 2. Thermal and Photon Stimulated Reactions on Metal Particles

    Author : Kristina Wettergren; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Plasmons; Platinum Clusters; Platinum Nanoparticles; Hydrogen Oxidation; Sodium; Silver Nanoparticles; Nitric Oxide; Photodesorption; Sintering; Graphite; Water;

    Abstract : The interaction between molecules and solid surfaces influence our daily lives in many ways. One important example is heterogeneous catalysis where surface reactions, for example, are used for production of chemicals and exhaust after-treatment. READ MORE

  5. 3. New Materials in Environmental Catalysis

    Author : Magnus Skoglundh; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Cobalt; Copper; Xylene oxidation; Platinum; Carbon monoxide oxidation; exhaust gas catalysis; Rhodium; Palladium; Nitric oxide reduction; perovskites;

    Abstract : This thesis presents new approaches to the control of emissions within the field of environmental catalysis. Three catalytic systems; bimetallic catalysts, perovskites and promoted catalysts have been prepared and evaluated for complete oxidation of volatile organic compounds and for simultaneous conversion of CO, hydrocarbons and nitrogen oxides. READ MORE

  6. 4. Molecular Dynamics Studies of Low-Energy Atom Impact Phenomena on Metal Surfaces during Crystal Growth

    Author : Dragan Adamovic; Peter Münger; Thomas Michely; Linköpings universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Molecular dynamics simulations; Low energy Ion irradiation; Atomistic processes; Thin film growth; Physics; Fysik;

    Abstract : It is a well-known fact in the materials science community that the use of low-energy atom impacts during thin film deposition is an effective tool for altering the growth behavior and for increasing the crystallinity of the films. However, the manner in which the incident atoms affect the growth kinetics and surface morphology is quite complicated and still not fully understood. READ MORE

  7. 5. Nanoplasmonic sensing: from biology to catalysis

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

    Abstract : 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. READ MORE