Search for dissertations about: "lead chemistry"

Showing result 21 - 25 of 354 swedish dissertations containing the words lead chemistry.

  2. 21. Electrocatalyst materials for low-temperature hydrogen fuel cells

    Author : Gerard Montserrat Siso; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Catalyst; Alloys.; Oxygen Reduction; Nanofabrication; Electrode; Fuel Cell; PEMFC; Hydrogen Oxidation; Model System; Thin Film; AEMFC;

    Abstract : Fuel cells have emerged as an alternative to satisfy the need of energy systems with net-zero emissions. Although fuel cells date back to the 1800s, it is only during the last decades that research and development has enabled true commercialization. READ MORE

  4. 22. Colloidal fumed silica and soluble silicates — Interactions and microstructure

    Author : Jonas Nordström; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Electrolytes; Infrared spectroscopy; Alkaline sodium silicate; Colloidal stability; Ionic liquids; Gelation; Raman spectroscopy; Photon correlation spectroscopy; Fumed silica; Water glass;

    Abstract : Colloidal dispersions and gels are important material systems with applications in many industrial processes and consumer products. This thesis aims at increasing the understanding of colloidal interactions and the phase transition from a colloidal dispersion to an arrested structure in two systems based on silica. READ MORE

  5. 23. Magnetically governed self-assembly of soft matter : A look into interfacial layering, crystallization and percolation

    Author : Apurve Saini; Max Wolff; Vassilios Kapaklis; Pietro Tierno; Uppsala universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Self-assembly; Soft matter; Colloids; Magnetic nanoparticles; Ferrofluid; Solid-liquid interface; Neutron reflectometry; Electrical sensing; Microcontact; Materiefysik; Physics of Matter;

    Abstract : Self-organisation is the key route for assembling colloidal particles into well-defined structures. Decisive for this are the interactions between the constituents, which are amongst others steric, electrostatic or magnetic. READ MORE

  6. 24. On the chemical state and mobility of lead and other trace elements at the biogeosphere/technosphere interface

    Author : Mattias Bäckström; Gunnar Jacks; Örebro universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; lead; trace elements; traffic; shooting range; peat; sediments; speciation; biokemi; Chemistry; Kemi; Kemi; Chemistry;

    Abstract : Most inorganic contamination has occurred at the interface between the technosphere and the biogeosphere, even though atmospheric emissions have affected the entire globe. Several human activities now pose a substantial threat towards human health and the ecosystems. READ MORE

  7. 25. Lead-free Metal Halide based Solar Cells

    Author : Huimin Zhu; Erik Johansson; Gerrit Boschloo; Feng Gao; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Low-toxicity; emerging light harvesters; lead-free; low toxic bismuth; Ag Cs -Bi Sb -I Br systems; 2D perovskites.;

    Abstract : Lead-halide perovskites have recently appeared as very promising materials for solar cells. However, their stability and toxicity may be limiting factors for their application. Therefore, to find new low toxic and high stability light harvesters may be necessary for overcoming the challenges of perovskite solar cells. READ MORE