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Showing 1 to 14 of 14 for “"photoelectrochemical water splitting."”.
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First-principles study of doped hematite surfaces for photoelectrochemical water splitting
Photoelectrochemical (PEC) water splitting, using sunlight and appropriate semiconductors to produce hydrogen (H2) fuel, is a promising route to solve both the production of clean H2 fuel and storage for solar energy. Owing to its various advantages, hematite (α-Fe2O3) has emerged as a promising …
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The impact of surface modifications on the properties of α-SnWO4 photoanodes for photoelectrochemical water splitting
Zunehmende Luftverschmutzung und globale Erwärmung sind eine Herausforderung für das Leben der Menschheit im 21. Jahrhundert und darüber hinaus. Um die Auswirkungen auf die Umwelt, Gesellschaft und Wirtschaft abzumildern, ist ein Übergang in ein nachhaltiges Energiesystem unerlässlich. Wasserstoff …
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Enhancing the photoelectrochemical water splitting characteristics of titanium and tungsten oxide based materials via doping and sensitization
… variation and the diffuse nature of sunlight. Photoelectrochemical (PEC) hydrogen generation by water splitting is a promising approach to harvest solar energy. Hydrogen gas is a clean and high energy capacity fuel. However, the solar-to-hydrogen conversion efficiency is determined mainly by …
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Solar Driven Photoelectrochemical Water Splitting For Hydrogen Generation Using Multiple Bandgap Tandem Of Cigs2 Pv Cells And Thin Film Photocatalyst
… (CIGS2)/CdS thin film solar cells for photoelectrochemical (PEC) water splitting to produce very pure hydrogen and oxygen. Efficiencies obtained using CIGS2 have been lower than those achieved using CuInSe2 and CuIn1-xGaxSe2. The basic limitation in the efficiencies is attributed to …
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Development and investigation of integrated solar systems for hydrogen and methanol production
… clean hydrogen production from solar energy and water using a novel photoelectrochemical water-splitting reactor designed, built, and tested at the Clean Energy Research Laboratory in UOIT. Integrating solar concentration and a spectrum-splitting mirror allows simultaneous photovoltaic …
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OPERANDO X-RAY ABSORPTION SPECTROSCOPY STUDIES OF (PHOTO)ELECTRODE MATERIALS FOR H2 PRODUCTION/CONVERSION
… (ORR), oxygen evolution reaction (OER), and photoelectrochemical water splitting. The prepared electrodes were characterized by a series of advanced techniques, including scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray absorption spectroscopy (XAS), X-ray …
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Metal Oxide Semiconductors for Solar Energy Harvesting
… to produce solar fuels such as hydrogen from photoelectrochemical water splitting. The source of water is important -- seawater is attractive. The fundamental reaction mechanism for TiO2-based cells is discussed in the context of seawater splitting. There are two primary issues with producing …
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Experimental investigation and analysis of a new light-based hydrogen production system
… to support the future energy infrastructure. The photoelectrochemical water splitting cycle is one of the supreme attractive alternative photoelectrochemical cycles for clean hydrogen production due to its lower temperature requirement and better overall efficiency. The key objective of this …
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Growth of anodic alumina nanopores and titania nanotubes and their applications
… of TiO₂ nanotubes in supercapacitors and photoelectrochemical water splitting are optimized by enlarging surface area and increasing electrical conductivity. Focused ion beam can not only create concave arrays to guide the electrochemical anodization, but also be used for nanoscale …
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Nanostructured Thin Film Synthesis by Aerosol Chemical Vapor Deposition for Energy Storage Applications
… targeting direct solar to fuel conversion via photoelectrochemical water-splitting and second, improving the performance of current rechargeable batteries by developing new electrode architectures and synthesis processes.</p><p>The aerosol chemical vapor deposition (ACVD) process has emerged as …
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Proton-coupled electron transfer reactions in bio-inspired catalysis
… mediators is photosynthesis, where the slow water splitting reaction and the fast photoinitation of a reaction center are mediated by a Tyr-His redox pair in Photosystem II. Understanding the fundamental PCET processes in Tyr-His models is helpful for the design of photoelectrochemical water …
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Energy Systems Analysis for a Solar Economy
… achievable Sun-to-H2 (STH<sub>2) efficiency for water-splitting processes harnessing solar energy predominantly as heat. The estimated STH<sub>2 efficiencies of 35-54% for direct and two-stage (using Fe<sub>3O<sub>4/FeO) thermal water-splitting are greater than the achievable values for …
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Functional Oxides in Optical and Electronic Applications by Atmospheric Pressure Spatial Chemical Vapour Deposition
… in gas sensing, photocatalysis, smart windows, water splitting and etc. However, WO3 does suffer from a diverse of phases and states, making it hard to control electronic conductivity, and variable oxygen and cation valence states for RRAM application. Furthermore, for electronics, either …
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H-BN integration in III-nitride devices for green hydrogen applications
… the initial steps in developing an integrated photoelectrochemical (PEC) cell for green hydrogen production using PEC water splitting. The focus is on integrating InGaN (Indium Gallium Nitride), GaN (Gallium Nitride), and h-BN (hexagonal Boron Nitride), which are promising materials for …