Sacrificial hydrogen production over TiO2-based photocatalysts: Polyols, carboxylic acids, and saccharides

Masahide Yasuda, Tomoko Matsumoto and Toshiaki Yamashita

Renewable and Sustainable Energy Reviews, 2018, vol. 81, issue P2, 1627-1635

Abstract: Photocatalytic generation of H2 from water over titanium dioxide (TiO2) has received a great deal of interest for developing a renewable and clean energy source. It is initiated by charge-separation in TiO2 upon photoexcitation. The electron reduces water to generate H2 while the hole oxidizes hydroxide to generate hydroxyl radicals. However, water-splitting into O2 and H2 is not easy because of the large up-hill reaction and rapid reverse reaction. It is well known that the use of electron-donating sacrificial agents (hole scavengers) remarkably accelerates TiO2-photocatalyzed H2 evolution in which the hydroxyl radical is consumed by the sacrificial agents. Thus, sacrificial H2 production over a TiO2 photocatalyst is a convenient method to generate H2 from biomass and waste. This paper reviews the sacrificial H2 production from polyols, carboxylic acids, and saccharides, focusing on the chemical yield of H2 production.

Keywords: Hydrogen evolution; Pt/TiO2; Polyols; Carboxylic acids; Saccharides; Chemical yields; Quantum yields (search for similar items in EconPapers)
Date: 2018
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Citations: View citations in EconPapers (2)

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DOI: 10.1016/j.rser.2017.05.243

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