Journal ArticleDOI
Photocatalytic hydrogen production using metal doped TiO2: A review of recent advances
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TLDR
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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Facile construction of self-assembled Cu@polyaniline nanocomposite as an efficient noble-metal free cocatalyst for boosting photocatalytic hydrogen production
TL;DR: In this article , the self-assembly synthesis of Cu nanospheres (∼8 nm) surrounded by a thin conductive layer of polyaniline was rationally engineered via in-situ polymerization.
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Enhanced photocatalytic activity and stability of TiO2/graphene oxide composites coatings by electrophoresis deposition
Sujun Guan,Sujun Guan,Liang Hao,Hiroyuki Yoshida,Takaomi Itoi,Yanling Cheng,Satoshi Seki,Yuta Nishina,Yun Lu +8 more
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Experimental and numerical study on photocatalytic activity of the ZnO nanorods/CuO composite film.
TL;DR: The ZnO NRs/CuO composite film exhibits significantly enlarge absorption range to visible-light and suppress the recombination rate of the photogenerated electron-hole pairs, which can be well utilized as a photocatalyst.
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Novel plate-on-plate hollow structured BiOBr/Bi2MoO6 p-n heterojunctions: In-situ chemical etching preparation and highly improved photocatalytic antibacterial activity
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TL;DR: In this article , a novel plate-on-plate hollow structured BiOBr/Bi 2 MoO 6 p-n heterojunction with rich oxygen vacancies (OVs) was constructed by an in-situ chemical etching method.
References
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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.
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Visible-Light Photocatalysis in Nitrogen-Doped Titanium Oxides
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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.
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Semiconductor-based Photocatalytic Hydrogen Generation
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