Sökning: "Electrocatalysis"

Visar resultat 1 - 5 av 27 avhandlingar innehållade ordet Electrocatalysis.

  1. 1. Theoretical and Experimental Studies of Electrode and Electrolyte Processes in Industrial Electrosynthesis

    Författare :Rasmus Karlsson; Ann Cornell; Jan Rossmeisl; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Electrocatalysis; metallic oxides; ruthenium dioxide; titanium dioxide; DSA; doping; selectivity; ab initio modeling; density functional theory; Elektrokatalys; metalloxider; ruteniumdioxid; titandioxid; DSA; dopning; selektivitet; ab initio-modellering; täthetsfunktionalteori; Chemical Engineering; Kemiteknik;

    Sammanfattning : Heterogeneous electrocatalysis is the usage of solid materials to decrease the amount of energy needed to produce chemicals using electricity. It is of core importance for modern life, as it enables production of chemicals, such as chlorine gas and sodium chlorate, needed for e.g. materials and pharmaceuticals production. LÄS MER

  3. 2. Illuminating Benzothiadiazole : Mechanistic Insights into its Role in Fuel-Forming Reactions

    Författare :Martin Axelsson; Haining Tian; Leif Hammarström; Ksenjia Glusac; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Photocatalysis; Electrocatalysis; Renewable Energy; Mechanistic Studies; Cyclic Voltammetry; Benzothiadiazole;

    Sammanfattning : Development and understanding of catalytic reactions involved in fuel formation are crucial to be able to make the energy transition into a sustainable future. One intriguing type of catalyst for these types of reactions is organic material catalysts, which combine some of the tunable nature of molecular catalysts with the scalability and robust nature of material catalysts. LÄS MER

  4. 3. Theoretical Studies on CO2 Reduction Electrocatalysts

    Författare :Xiaoyu Chen; Mårten S. G. Ahlquist; Sandra Luber; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Computational Chemistry; CO2 reduction; electrocatalysis; Teoretisk kemi och biologi; Theoretical Chemistry and Biology;

    Sammanfattning : The atmospheric CO2 concentration has increased by more than 20% since 1980s and has now reached the highest level than at any point in the past 800 000 years. Electrochemical CO2 reductions are receiving particular in- terest as the apparatus are relatively easy to maintain and cheap to operate. LÄS MER

  5. 4. Atomic Scale Modelling in Photoelectrocatalysis : Towards the Development of Efficient Materials for Solar Fuel Production

    Författare :Giane B. Damas; Carlos Moyses Araujo; Rajeev Ahuja; Clas Persson; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Photocatalytic hydrogen production; polymeric materials; donor-acceptor architecture; small molecules; density functional theory; hydrogen binding free energies; exciton binding energies; electrocatalysis; carbon dioxide conversion; formic acid production; Sn-based electrodes; Tin oxides; Ru-complexes; Metal Organic Frameworks; carbon dioxide capture.;

    Sammanfattning : Using sunlight to produce valuable chemicals has been pointed out as an interesting alternative to deal with the well-known environmental problem related to the use of fossil fuels for energy generation. Thus, it is crucial for this field the development of novel photocatalysts that could drive the uphill reactions with high efficiency while presenting low price and toxicity. LÄS MER

  7. 5. Functionalized mesoporous carbons as non-precious metal fuel cell catalysts

    Författare :Johanna Dombrovskis; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; electrocatalysis; oxygen reduction reaction; non-precious metal catalyst; mesoporous carbon; fuel cell; X-ray absorption spectroscopy;

    Sammanfattning : Fuel cells allow for clean and efficient chemical to electrical energy conversion. However, their high price significantly limits the market viability of the technology. This is to a large part due to the high cost of the precious metals used in most fuel cell catalysts. LÄS MER