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Showing 1 to 20 of 137 for “"Photocatalysts"”.
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Design of band-engineered photocatalysts using TiO2
… the electric fields in semiconducting oxide photocatalysts based on principles of electronic band-engineering drawn from classical microelectroncis. The present work demonstrates such principles using the model case of methylene blue photooxidation over thin-film anatase TiO2 grown by atomic …
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Design and Application of Nanostructured Flavin Photocatalysts
… to name a few. It has been shown that flavin photocatalysts can be tuned to a specific application either through chemical structure modification or by the design of advanced systems through heterogeneous or polymer carrier attachment. The latter has shown encouraging results to widen flavin …
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PEROVSKITE PHOTOCATALYSTS FOR THE DECOMPOSITION OF ODOR MOLECULES
… the potential applications of the synthesized photocatalysts, they were also tested for the degradation of Nitrogen Oxides (NOx), which are one of the main contributors to poor air quality in industrial and urban areas. The investigation began with the benchmark TiO2 due to its wide …
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Development of novel photocatalysts for solar hydrogen production
Photocatalysts, typically nanoparticulate semiconductors, can be used to split water into hydrogen and oxygen. If solar light is used for this, it opens the possibility of a renewable source of hydrogen. However, extension of photocatalytic response into the visible region of the solar spectrum is …
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Carbon dots as sustainable photocatalysts for organic synthesis
… have the potential to replace costly or harmful photocatalysts for a range of synthetically relevant transformations. This dissertation aims to establish CDs as versatile, sustainable photocatalysts for organic synthesis. Chapter 2 explores CDs as photocatalysts for net-oxidative and …
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Examining Tantalum-Based Photocatalysts for Photoinactivation of E. coli
… processes, applicable in this scenario. Photocatalysts, compounds that are active when illuminated with light, can be used in combination with solar light for photoinactivation of E. coli. This work helped to determine if tantalum pentoxide (Ta2O5) and tantalum oxynitride (TaON) can …
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SYNTHESIS OF Ti02- BASED PHOTOCATALYSTS FOR PHOTOCATALYTIC H2 GENERATION
Since the discovery of splitting water into H2 and O2 with a photoelectrochemical set-up by Honda and Fujishima, photocatalytic H2 generation using TiO2 has been extensively studied due to its relatively high efficiency and photostability compares with other semiconductors. The photocatalytic …
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Design of water-splitting photocatalysts by first principles computations
… on the design of novel inorganic water-splitting photocatalysts for solar applications using first principles computations. Water-splitting photocatalysts are materials that can photo-catalyze the water-splitting reaction under certain conditions. They provide an alternative way to capture and …
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Antimicrobial Materials for Water Disinfection Based on Visible-Light Photocatalysts
… property of these visible-light-active photocatalysts were studied in the inactivation of bacteria and bacterial spores in water. Fast killing rate was obtained for the inactivation of E. coli, P. aeruginosa, S. aureus and B. subtilis endospores. The results of mechanistic study provided …
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The application of iron oxide based photocatalysts in chromium photoredox chemistry
Chromium(VI) is a reactive and highly toxic pollutant species which is present in certain industrial effluent streams as well as sea water and polluted ground water. Chromium(III), however, is relatively inert and less toxic. Conventional methods used to eliminate Cr(VI) from aqueous phase include …
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Optimization of photocatalytic degradation of wastewater using oxide and non-oxide photocatalysts
A dissertation submitted in fulfillment of the academic requirement for the degree of Master of Engineering: Chemical Engineering, Durban University of Technology, Durban, South Africa, 2025.
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Interaction of fluroquinolone antibiotics with nanophase metal oxide photocatalysts and soil minerals
The contamination of surface waters with pharmaceutical compounds has been recognized as a problem in many regions of the world. These xenobiotic compounds originate from point sources, such as treated wastewater effluent, and also from non-point sources, such as runoff from animal rearing …
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Shining light on the photoexcited states of first-row transition metal photocatalysts
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Iron Modified Bismuth Titanate Pyrochlore Photocatalysts for Environmental Remediation and Solar Fuel Production
… Subramanian developing novel mixed metal oxide photocatalysts to help alleviate environmental and energy related concerns. In the first chapter we examine the catalytic activity of a pyrochlore phase bismuth titanate (Bi2Ti2O7-BTO) in driving the photo-assisted decomposition of a model …
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SYNTHESIS OF EFFICIENT PHOTOCATALYSTS IN EXTREME TEMPERATURE CONDITIONS FOR THE DEGRADATION OF AIR POLLUTANTS.
… of sustainable, novel, and efficient STO-based photocatalysts in this investigation. Furthermore, modification strategies to enhance the photocatalytic performance of STO, such as the incorporation of noble metal nanoparticles onto the STO surface, were also investigated. The localized surface …
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A COLLABORATIVE APPROACH TO MATERIALS DISCOVERY FOR WATER SPLITTING PHOTOCATALYSTS AND LITHIUM SULFUR REDOX.
… hydrogen, provided that stable and inexpensive photocatalysts with conversion efficiencies over 10% can be discovered, synthesized at scale, and successfully deployed. Starting with 70,150 compounds in the Materials Project database, the proposed protocol yielded 71 candidate photocatalysts, 11 …
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