Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 24 for “"solar fuels"”.
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ZnSe Quantum Dots as a platform for solar fuels synthesis
This work studied the generation of solar fuels (CO2 to CO reduction and H2 evolution) on photocatalysts comprised of nanoparticulate ZnSe Quantum Dots (QDs) in aqueous (ascorbate) solution. A continuous-flow setup for photocatalysis was successfully developed which enables in-line gas …
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DESIGN OF NOVEL MATERIALS FOR PHOTO-THERMO-CATALYTIC SOLAR FUELS PRODUCTION
… for innovative technologies that can harness solar energy for fuel production. Among various strategies, the generation of solar fuels, such as hydrogen (H2) through water splitting or alcohol reforming, and the conversion of carbon dioxide (CO2) into valuable chemicals, has emerged as a …
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Three-dimensional nanotube arrays for solar energy harvesting and production of solar fuels
… highly uniform nanorods and nanowire arrays for solar energy conversion have been explored as potential candidates for solar energy conversion and solar-fuel generation owing to their enhanced photoconversion efficiencies.</p><p>However, controlled fabrication of nanorod and especially nanotube …
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Robust Nickel Catalysts Supported By Biaryl-Bridged Pyridyl-N-Heterocyclic Carbenes For Carbon Dioxide Reduction To Value-Added Products
… accessible C1 feedstock for conversion to solar fuels and value-added chemicals. However, CO2 is relatively inert and very negative voltages or strong chemical reductants are comfor its conversion. An additional challenge lies in achieving these reactions in water where aqueous protons are …
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Photoelectrochemical fuel synthesis using organic semiconductors with (bio)molecular catalysts
… devices offer great promise for simultaneous solar light harvesting and chemical storage, converting water and CO2 into value-added products. While progress has been made to improve their solar-to-fuel conversion efficiencies, most conventional prototypes face challenges of insufficient …
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Rational design strategies for oxide oxygen evolution electrocatalysts
… electrocatalysis is instrumental to enabling solar fuels, fuel cells, electrolyzers, and metal-air batteries. Non-precious transition metal oxides show promise as cost-effective materials in such devices. Leveraging the wealth of solid-state physics understanding developed for this class of …
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Designing high performance overall water splitting electrocatalysts from non-precious metal selenides
… for pursuing transition away from fossil fuels to renewable solar-fuels. Therefore, in order to meet the continuous increasing demand for energy, the hydrogen, with the largest energy density stored in it, can then efficiently be used in fuel cells without concern of contaminants. Water …
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Computationally-Derived Design Principles for Water Oxidation Catalysts
… reaction can be used to produce renewable solar fuels, but efficient catalysts need to be discovered to enable its use at the industrial scale. The most active known water oxidation catalysts (WOCs) follow a common theme in chemical catalysis, relying on rare metals such as ruthenium and …
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Generating Small Molecule Fuels: (Photo)Electrochemical Catalysts
… systems to the harvesting of visible light – solar fuels and solar synthesis respectively. Chapter 1 gives a general overview of the world demand for energy and how it is currently produced. The current methods of renewable energy conversion are discussed with solar energy capture offering the …
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Electronic Effects in Multidentate Pyridinol and N-Heterocyclic Carbene Based Ligands for Transition Metal Catalyzed Carbon Dioxide Reduction
… base which prevents progress in synthesizing solar fuels. Our research hypothesis is that through the control of steric and electronic factors we can design better catalysts using various transition metals. Multidentate ligands composed of pyridyl bound to N-heterocyclic carbene rings are a …
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Metal Oxide Semiconductors for Solar Energy Harvesting
… climate change, long-term supply and security, solar energy is an attractive source. It is plentiful, virtually inexhaustible, and can provide more than enough energy to power society. However, the issue with producing electricity and fuels from solar energy is that it is expensive, primarily …
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Solar-driven catalytic processes for sustainable fuels and chemicals production
Solar-driven catalytic conversion of CO2 emissions and chemical wastes into value-added fuels and chemicals offers a promising solution to address the escalating energy demand and promote sustainable development. However, the advancement of solar fuels technology is severely impeded by the …
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Molecular Hybrid Photocathodes Based on Silicon for Solar Fuel Synthesis
… is broadly defined as the process of solar energy conversion into chemical fuels and represents a promising route towards alleviating the global energy crisis. In this context, the development of photocathodes for the use in photoelectrochemical cells is an attractive approach for the …
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ENGINEERING STRUCTURE AND PHASE VIA TEMPERATURE MANIPULATION IN THIN FILM OXIDES GROWN BY ALD
… with applications spanning microelectronics, solar fuels and biological preservation due to its advantages of a wide precursor library for the majority of the periodic table, exquisite control over growth rates, and the ability to deposit at extremely low temperatures. One critical parameter …
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Improving numerical simulation methods for the assessment of wind source availability and related power production for wind farms over complex terrain
… ERiCSol (Energie Rinnovabili e Combustibili Solari), in order to promote the research on renewable energy storage and solar fuels. The research activity presented in this thesis lies in the framework of this project, focusing on the development of new advanced simulation approaches to improve …
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Functionalized Metal-Organic Frameworks for Water Oxidation Catalysis
… aggravate global warming, but also cause fossil fuels shortage in the near future. Solar energy is an infinite green energy resource that can potentially satisfy our energy usage. By utilizing solar energy to drive reactions like water splitting, solar fuels system are able to produce valuable …
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Plastic and mixed waste as feedstocks for solar-driven H₂ production
As the world strives toward a carbon-neutral future powered by a circular economy, photoreforming enables the simultaneous generation of renewable fuel and mitigation of waste. In this simple process, a photocatalyst utilises the energy in sunlight to reduce water to H₂ and oxidise waste into other …
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Enhancing solar fuel synthesis via complementary approaches: round-the-clock operation and heat utilisation
The synthesis of fuels from sunlight offers a promising sustainable solution for chemical energy storage. However, the inefficient utilisation of the solar spectrum limits its commercial viability. Requiring high energy photons to drive the reaction, a large portion of the solar spectrum, …
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Immobilising and Interfacing Poly(Heptazine Imide) Ionic Carbon Nitride for Photo(electro)catalytic Fuel and Chemical Production
The production of fuels and other value-added chemicals from sunlight is one of the proposed sustainable pathways to fulfil the constantly increasing energy demand while pushing towards a carbon-neutral circular economy. Photocatalytic (PC) and photo(electro)catalytic (PEC) systems, based on a …
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