Journal ArticleDOI
Photocatalytic hydrogen production using metal doped TiO2: A review of recent advances
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In this paper, the basic principles, photocatalytic-reactor design, kinetics, key findings, and the mechanism of metal-doped TiO2 are comprehensively reviewed.Abstract:
Hydrogen (H2) production via photocatalytic water splitting is one of the most promising technologies for clean solar energy conversion to emerge in recent decades. The achievement of energy production from water splitting would mean that we could use water as a fuel for future energy need. Among the various photocatalytic materials, titanium dioxide (TiO2) is the dominant and most widely studied because of its exceptional physico-chemical characteristics. Surface decoration of metal/non-metal on TiO2 nanoparticles is an outstanding technique to revamp its electronic properties and enrich the H2 production efficiency. Metal dopants play a vital role in separation of electron-hole pairs on the TiO2 surface during UV/visible/simulated solar light irradiation. In this paper, the basic principles, photocatalytic-reactor design, kinetics, key findings, and the mechanism of metal-doped TiO2 are comprehensively reviewed. We found that Langmuir-Hinshelwood kinetic model is commonly employed by the researchers to demonstrate the rate of H2 production. Copper (Cu), gold (Au) and platinum (Pt) are the most widely studied dopants for TiO2, owing to their superior work function. The metal dopants can amplify the H2 production efficiency of TiO2 through Schottky barrier formation, surface plasmon resonance (SPR), generation of gap states by interaction with TiO2 VB states. The recent advances and important consequences of 2D materials, perovskites, and other novel photocatalysts for H2 generation have also been reviewed.read more
Citations
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Journal ArticleDOI
Significantly enhanced photocatalytic activity of TiO2/TiC coatings under visible light
TL;DR: In this paper, the photocatalytic activity of TiO2/TiC coatings has been significantly enhanced, especially under visible light, due to the increased accessible surface area and formed heterojunction.
Journal ArticleDOI
Use of TiO2 in Photocatalysis for Air Purification and Wastewater Treatment: A Review
TL;DR: In this article , a review of recent research on the synthesis and application of titanium dioxide (TiO 2 )-based photocatalysts for environmental applications is presented, and an overview of nanotechnology that could enhance the properties of TiO 2 -based catalysts in an environmentally friendly way to decompose pollutants is also presented.
Book ChapterDOI
Photocatalytic Hydrogen from Water Over Semiconductors
TL;DR: In this paper, the fundamental development of water-splitting photocatalytic systems is described, which is fundamentally composed of a H2-photocatalyst and an O2-PhotOCatalyst to perform water reduction and oxidation.
Journal ArticleDOI
Seed-induced synthesis of durian-like mischcrystal TiO2/graphene as an efficient photocatalyst for desulfurization
TL;DR: In this paper , a durian-like mischcrystal TiO2/graphene consisting of anatase and rutile phase was synthesized via a seed-induced synthesis.
References
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Journal ArticleDOI
Electrochemical Photolysis of Water at a Semiconductor Electrode
Akira Fujishima,Kenichi Honda +1 more
TL;DR: Water photolysis is investigated by exploiting the fact that water is transparent to visible light and cannot be decomposed directly, but only by radiation with wavelengths shorter than 190 nm.
Journal ArticleDOI
Environmental Applications of Semiconductor Photocatalysis
TL;DR: The slow pace of hazardous waste remediation at military installations around the world is causing a serious delay in conversion of many of these facilities to civilian uses as discussed by the authors, which is a serious problem.
Journal ArticleDOI
Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides
TL;DR: Film and powders of TiO2-x Nx have revealed an improvement over titanium dioxide (TiO2) under visible light in optical absorption and photocatalytic activity such as photodegradations of methylene blue and gaseous acetaldehyde and hydrophilicity of the film surface.
Journal ArticleDOI
Solar Water Splitting Cells
Michael G. Walter,Emily L. Warren,James R. McKone,Shannon W. Boettcher,Qixi Mi,Elizabeth A. Santori,Nathan S. Lewis +6 more
TL;DR: The biggest challenge is whether or not the goals need to be met to fully utilize solar energy for the global energy demand can be met in a costeffective way on the terawatt scale.
Journal ArticleDOI
Semiconductor-based Photocatalytic Hydrogen Generation
TL;DR: Approaches to Modifying the Electronic Band Structure for Visible-Light Harvesting and its Applications d0 Metal Oxide Photocatalysts 6518 4.4.1.
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