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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Journal ArticleDOI
g-C3N4/carbon dot-based nanocomposites serve as efficacious photocatalysts for environmental purification and energy generation: A review
TL;DR: In this article, a review highlights the applied protocols to ameliorate the photoactivity of graphitic carbon nitride (g-C3N4) based nanocomposites through combining with various materials.
Journal ArticleDOI
2D Nanomaterials for Photocatalytic Hydrogen Production
Priyanka Ganguly,Moussab Harb,Zhen Cao,Luigi Cavallo,Ailish Breen,Saoirse Dervin,Dionysios D. Dionysiou,Suresh C. Pillai +7 more
TL;DR: The photocatalytic water splitting technique is a promising alternative to produce hydrogen using a facile and proficient method as discussed by the authors, and it has been shown to be an effective alternative to conventional water splitting.
Journal ArticleDOI
Photocatalytic Hydrogen Production: Role of Sacrificial Reagents on the Activity of Oxide, Carbon, and Sulfide Catalysts
Vignesh Kumaravel,Muhammad Danyal Imam,Ahmed Badreldin,Rama Krishna Chava,Jeong Yeon Do,Misook Kang,Ahmed Abdel-Wahab +6 more
TL;DR: In this article, the authors evaluated the performance of three promising photocatalysts (titania (TiO2-P25), graphitic carbon nitride (g-C3N4), and cadmium sulfide (CdS)) using various sacrificial agents.
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Optical Properties and Applications of Plasmonic-Metal Nanoparticles
TL;DR: In this paper, the potential of plasmonic nanoparticles based on their optical properties (e.g., light absorption, scattering, and field enhancement) for developing different applications (biomedical, energy and information technologies).
Journal ArticleDOI
Atomic-Level Charge Separation Strategies in Semiconductor-Based Photocatalysts.
TL;DR: In this paper, the advances on atomic-level charge separation strategies toward developing robust photocatalysts are highlighted, elucidating the fundamentals of charge separation and transfer processes and advanced probing techniques.
References
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Journal ArticleDOI
A review on the visible light active titanium dioxide photocatalysts for environmental applications
Miguel Pelaez,Nicholas T. Nolan,Suresh C. Pillai,Michael K. Seery,Polycarpos Falaras,Athanassios G. Kontos,Psm Dunlop,Jwj Hamilton,John Byrne,Kevin E. O'Shea,Mh. Entezari,Dionysios D. Dionysiou +11 more
TL;DR: In this paper, the development of different strategies to modify TiO2 for the utilization of visible light, including non metal and/or metal doping, dye sensitization and coupling semiconductors are discussed.
Journal ArticleDOI
Semiconductor heterojunction photocatalysts: design, construction, and photocatalytic performances
Huanli Wang,Lisha Zhang,Zhigang Chen,Junqing Hu,Shijie Li,Zhaohui Wang,Jianshe Liu,Xinchen Wang +7 more
TL;DR: This review attempts to summarize the recent progress in the rational design and fabrication ofheterojunction photocatalysts, such as the semiconductor-semiconductor heterojunction, the semiconductors-metal heterojunctions, the silicon-carbon heteroj junction and the multicomponent heteroj conjunction.
Journal ArticleDOI
Direct splitting of water under visible light irradiation with an oxide semiconductor photocatalyst
TL;DR: The findings suggest that the use of solar energy for photocatalytic water splitting might provide a viable source for ‘clean’ hydrogen fuel, once the catalytic efficiency of the semiconductor system has been improved by increasing its surface area and suitable modifications of the surface sites.
Journal ArticleDOI
Quantum Dot Solar Cells. Semiconductor Nanocrystals as Light Harvesters
TL;DR: In this paper, three major ways to utilize semiconductor dots in solar cell include (i) metal−semiconductor or Schottky junction photovoltaic cell, (ii) polymer−smiconductor hybrid solar cell, and (iii) quantum dot sensitized solar cell.
Journal ArticleDOI
Earth-abundant cocatalysts for semiconductor-based photocatalytic water splitting
TL;DR: This review for the first time summarizes all the developed earth-abundant cocatalysts for photocatalytic H2- and O2-production half reactions as well as overall water splitting.
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