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Kumar, Ajay; Ramirez, Irwing; Choudhary, Priyanka; Sharma, Lalita; Bhagurkar, Ashutosh; Rana, Rohit and Kumar, Kuldeep
(2024).
DOI: https://doi.org/10.1021/bk-2024-1468.ch010
Abstract
Expanding industries and manufacturing sectors heavily rely on non-renewable energy resources leading to escalating pollution and substantial harm to the environment. To tackle this challenge, it is imperative to undertake two crucial measures, first to reduce the use of fossil fuels, and second to replace fossil fuels with environmentally cleaner alternatives. Photocatalytic hydrogen production via water splitting is a renewable, sustainable, and promising technology to produce clean and green hydrogen with negligible impact on the environment. Titanium dioxide (TiO2)-based photocatalysts are most promising and widely used photocatalytic materials for hydrogen production due to high abundance, non-toxicity, low cost, and photostability. However, the wide bandgap and higher recombination rate of charge carriers restricted the photocatalytic efficiency of TiO2. For that, rational strategies such as doping with metals and nonmetals, the influence of facets, morphologies, phases, and defect engineering on TiO2-based photocatalysts has been discussed in detail. Additionally, this book chapter summarizes the fundamentals and mechanistic understanding of light driven photocatalytic H2 production. The investigations were further extended to study the influence of various parameters such as use of sacrificial agents, cocatalysts, light intensities on photocatalytic performance of TiO2-based photocatalysts. Finally, we delved into the industrial application of TiO2-based photocatalysts for hydrogen production, aiming to assess the current stage of development and identify areas for improvement to enhance its overall efficiency.
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