Sökning: "Kemi med inriktning mot materialkemi"

Visar resultat 1 - 5 av 29 avhandlingar innehållade orden Kemi med inriktning mot materialkemi.

  1. 1. Highly Efficient CIGS Based Devices for Solar Hydrogen Production and Size Dependent Properties of ZnO Quantum Dots

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :T. Jesper Jacobsson; Tomas Edvinsson; Laurence Peter; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; ZnO; Nanoparticles; Quanum Dots; Size Dependent Properties; Hematite; CIGS; Solar Water Splitting; Hydrogen Production; PEC; Photoelectrochemical cells; PV-electrolysis; Chemistry with specialization in Inorganic Chemistry; Kemi med inriktning mot oorganisk kemi;

    Sammanfattning : Materials and device concepts for renewable solar hydrogen production, and size dependent properties of ZnO quantum dots are the two main themes of this thesis.ZnO particles with diameters less than 10 nm, which are small enough for electronic quantum confinement, were synthesized by hydrolysis in alkaline zinc acetate solutions. LÄS MER

  2. 2. Insights into Covalent Chemistry for the Developmen­t of Biomaterials

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Daniel Bermejo-Velasco; Oommen P. Varghese; Jöns Hilborn; Frey Holger; [2019]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; hyaluronic acid; hydrogel; biomaterials; covalent chemistry; biomedical applications; MRI; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry; Kemi med inriktning mot polymerkemi; Chemistry with specialization in Polymer Chemistry;

    Sammanfattning : Covalent cross-linking chemistry is currently exploited in the preparation of biomaterial for biomedical applications. Choice of these chemistries for the preparation of biomaterials and bioconjugates strongly influences the biological output of these materials. LÄS MER

  3. 3. Characterization of Reaction Products in the Li-O2 Battery Using Photoelectron Spectroscopy

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Reza Younesi; Kristina Edström; Patrik Johansson; Fredrik Björefors; Gabriel Veith; [2012]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Li-O2 Battery; Surface Characterization; Lithium-Air Battery; Photoelectron Spectroscopy; XPS; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry; Chemistry with specialization in Physical Chemistry; Kemi med inriktning mot fysikalisk kemi;

    Sammanfattning : The rechargeable Li-O2 battery has attracted interest due to its high theoretical energy density (about 10 times better than today’s Li-ion batteries). In this PhD thesis the cycling instability of the Li-O2 battery has been studied. LÄS MER

  4. 4. Functional Binders at the Interface of Negative and Positive Electrodes in Lithium Batteries

    Detta är en avhandling från Uppsala : Uppsala universitet

    Författare :Fabian Jeschull; Daniel Brandell; Gerrit Boschloo; [2015]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; binder; lithium-sulfur batteries; graphite; lithium-ion batteries; Kemi med inriktning mot materialkemi; Chemistry with specialization in Materials Chemistry;

    Sammanfattning : In this thesis, electrode binders as vital components in the fabrication of composite electrodes for lithium-ion (LIB) and lithium-sulfur batteries (LiSB) have been investigated.Poly(vinylidene difluoride) (PVdF) was studied as binder for sulfur-carbon positive electrodes by a combination of galvanostatic cycling and nitrogen absorption. LÄS MER

  5. 5. Insights into dynamic covalent chemistry for bioconjugation applications

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Shujiang Wang; Oommen Varghese; Nicola Tirelli; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; dynamic covalent chemistry; reaction mechanism; hydrogel; bioconjugation; catalysis; Kemi med inriktning mot polymerkemi; Chemistry with specialization in Polymer Chemistry;

    Sammanfattning : Dynamic covalent chemistry (DCC) is currently exploited in several areas of biomedical applications such as in drug discovery, sensing, molecular separation, catalysis etc. Hydrazone and oxime chemistry have several advantages, such as mild reaction conditions, selectivity, efficiency, and biocompatibility and therefore, have the potential to be for bioconjugation applications. LÄS MER