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Showing 1 to 14 of 14 for “"photocatalytic water splitting"”.
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Exploiting polar interfaces for photocatalytic water splitting: application to the anatase-cuprous oxide heterojunction
… of solar energy to produce hydrogen by means of water splitting mechanism is a potentially transformative approach to achieving a clean and renewable energy society. Photo-produced hydrogen is a valuable fuel and energy carrier, which is easier to store than electricity or heat, and it is …
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Density functional theory calculations on materials in photocatalysis
… To effectively harvest the solar energy, photocatalytic water splitting reaction, which transfers the solar energy to the chemical energy contained in HH bonding, has drawn vast attention given that hydrogen molecules are environmentally friendly. In this thesis, we report density …
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CxNy-materials from supramolecular precursors for “All-Carbon” composite materials
… are promising as metal-free catalysts for the photocatalytic water splitting. Here, hydrogen can be generated from water by light irradiation with the use of a photocatalyst. As first part of the heterojunction, the organic semiconductor g-C₃N₄ was employed, because of its suitable band …
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Carbazole-based porous organic polymers for photocatalytic hydrogen evolution
Photocatalytic water splitting is a direct pathway to store solar energy in chemicals. Within the last decade, porous organic polymers (POPs) proved to be promising candidates to be applied as photocatalyst. Due to the variety of building blocks, the optical properties can be tuned towards the …
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GEOMETRY AND MORPHOLOGY OF TiO2 AND Fe2O3 NANOTUBES FOR SOLAR PHOTOLYSIS OF WATER
… were synthesized for visible light driven photocatalytic water splitting. Sonoelectrochemical anodization technique in combination with a room temperature ionic liquid was utilized to synthesize concentric nanotubes. Nanotubes grown by this method had external diameters around 82 and 206 …
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Development of a new hybrid photochemical/electrocatalytic water splitting reactor for hydrogen production: design, analysis and experiments
Solar-driven water splitting combines several attractive features for sustainable energy utilization. The conversion of solar energy to a type of storable energy has crucial importance. An alternative method to hydrogen production by solar energy without consumption of additional reactants is a …
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Nanostructures templated on biological scaffolds for light harvesting, energy transfer, charge transfer, and redox reactions
… the generated solar energy. Light-driven water splitting to generate hydrogen has received increasing attention as a means of storing solar energy. However, in order to evolve hydrogen with no energy input beyond sunlight, it is important to develop a stable and efficient catalytic system …
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Investigation of the Surface-Electrolyte Interface of Semiconductors and Metals
… process performance, whether investigating photocatalytic systems or the nature of adsorption and reaction dynamics on metal surfaces. The first project presents the photoelectrochemical characteristics of TlVO4, a previously uncharacterized candidate for photocatalytic water splitting. …
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Correlation of Photocatalytic Activity with Band Structure of Low-dimensional Semiconductor Nanostructures
Photocatalytic hydrogen generation by water splitting is a promising technique to produce clean and renewable solar fuel. The development of effective semiconductor photocatalysts to obtain efficient photocatalytic activity is the key objective. However, two critical reasons prevent wide …
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Solar-driven overall water splitting on CoO nanoparticles : first-principles density functional theory studies
Photoelectrochemical (PEC) water splitting has been suggested as a promising techinique for large-scale hydrogen fuel production. In particular, spontaneous photocatalytic overall water splitting on self-standing particles in water without external driving potential has been highlighted as a clean …
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Seidenbasierte anorganische Funktionsmaterialien
In der vorliegenden Arbeit konnten erfolgreich zwei unterschiedliche Hybridmaterialien (HM) über die Sol-Gel-Methode synthetisiert werden. Bei den HM handelt es sich um Monolithe mit einem Durchmesser von bis zu 4,5 cm. Das erste HM besteht aus Titandioxid und Bombyx mori Seide und wird als TS …
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Preparation and investigation of new heterostructures for prospective energetic and biomedical applications
… optimization of the redox process behind the photocatalytic water splitting reaction. Photophysical investigation of CdSe@CdS-Pt octapods enabled us to point out the effect of heterostructure morphology-properties relationship, as it was found that two regimes for capture of photoexcited …
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Development of Solar Sensitive Thin Film for Water Splitting and Water Heating using Solar Concentrator
Photocatalytic water splitting using solar energy could contribute to the solution of environmental and energy issues related to the hydrogen production. Key research area in this field is the development of photo-catalyst able to provide high energy conversion efficiency. TiO2 has been mostly …