Photocatalytic hydrogen production using metal doped TiO2: A review of recent advances
By V. Kumaravel, Snehamol Mathew, J. Bartlett, S. Pillai. Applied Catalysis B: Environmental, 2019
792 citations recorded by the source corpus.
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.
Subfields: Materials Chemistry, Renewable Energy, Sustainability and the Environment
View Paper: https://www.semanticscholar.org/paper/8a97fe0d5f5e00d8c32901458b054c5a0f741f80
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In Materials Chemistry
In Renewable Energy, Sustainability and the Environment
Citations in the corpus
- Photocatalytic Hydrogen Production: Role of Sacrificial Reagents on the Activity of Oxide, Carbon, and Sulfide Catalysts (2019, neutral): “Sche atic representation of the water-splitting process on a photocatalyst surface under light irradiation [1].”
- Red phosphorus decorated and doped TiO2 nanofibers for efficient photocatalytic hydrogen evolution from pure water (2019, background): “To improve the optical absorption properties, many approaches have been devoted to modifying TiO2, including high temperature reduction or hydrogenation [11-13], doping or co-doping with metal and/or non-metal elements [14-17], and surface sensitization with visible light active semiconductors and d”