Design and development of solid-state nanostructures for catalysis
Author
Summary, in English
In this thesis, a novel approach to designing and developing solid-state nanostructures for catalysis is presented. It encompasses three main components: the generation of catalytic nanoparticles, the fabrication of nanostructure supports, and post-processing techniques to enhance stability. Aerosol methods, specifically spark discharge generation, are employed to produce nanoparticles with high control over size, composition, and crystallinity. The fabrication of support structures, using epitaxial growth, resulted in close-packed tapered gallium phosphide nanowires and nano-trees that elevate catalytic nanoparticles, enhancing their accessibility to reactants during reactions. The thesis also addresses the challenge of stability for the catalytic nanoparticles in reaction environments, both for the use of planar supports and with high-aspect-ratio nanowire supports. The work includes the development of a method to study stability under reaction conditions, enabling the determination of suitable material sys-
tems. Finally, the catalytic evaluation of nanowire-supported palladium nanoparticles reveals promising results for the nanostructured catalysts, with a 15-fold increase in catalytic activity compared to using a planar support.
Department/s
Publishing year
2023
Language
English
Full text
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Document type
Dissertation
Publisher
Department of Physics, Lund University
Topic
- Condensed Matter Physics
Keywords
- Fysicumarkivet A:2023:Franzén
Status
Published
ISBN/ISSN/Other
- ISBN: 978-91-8039-891-6
- ISBN: 978-91-8039-890-9
Defence date
15 December 2023
Defence time
09:15
Defence place
Lecture Hall Rydbergsalen, Department of Physics, Professorsgatan 1, Faculty of Engineering LTH, Lund University, Lund.
Opponent
- Andreas Güntner (Assoc. Senior Lect.)