Design of dye-sensitized TiO2 materials for photocatalytic hydrogen production: light and shadow

Author:

Zani LorenzoORCID,Melchionna Michele,Montini Tiziano,Fornasiero PaoloORCID

Abstract

Abstract Visible light-driven production of fuels and value-added chemicals is currently one of the most intensely investigated research topics across various scientific disciplines, due to its potential to ease the World’s dependence on fossil fuels. In this perspective, we recapitulate some of the main features of dye-sensitized photocatalytic systems aimed at solar H2 production, focusing in particular on TiO2-based three-component assemblies with organic sensitizers. Relevant aspects include the structural and electronic properties of the sensitizers, the nature of the semiconductor and the hydrogen evolution catalysts, the role of the sacrificial donor and the effect of the reaction parameters on H2 production rate and stability. Besides presenting the most significant recent developments of the field, we also analyse some of its common practices in terms of experimental design, laboratory procedures and data presentation, trying to highlight their weaknesses and suggesting possible improvements. We then conclude with a short paragraph discussing the possible future development of this exciting research area.

Publisher

IOP Publishing

Subject

Materials Chemistry,General Energy,Materials Science (miscellaneous)

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