Abstract
For the last few decades, oxide materials have been one of the primary focuses for studies of photocatalysts for hydrogen production by splitting water. So far, under visible-light illumination, this approach has not been very successful; only under ultraviolet radiation oxides have shown some limited success. Despite the fact that oxides are in general stable, they suffer from wide bandgap, high resistivity, and sometimes poor optical absorption at the fundamental gap. Therefore, to improve the performance, it is important to understand the fundamental problems of photo-conduction properties in oxides at the electronic level. Density functional theory and its various extensions can provide useful insights regarding these problems. In addition, theory/computational studies can guide as well as predict novel oxides materials. In this chapter we will discuss some of the challenging aspects of the oxide photocatalysts from the theoretical perspective.
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Acknowledgements
The author would like to thank the coauthors with whom most of the original works reviewed here were performed. The author also gratefully acknowledges the funding from the National Science Foundation (NSF) and from the National Renewable Energy Laboratory (NREL) where most of the original researches were performed.
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Huda, M.N. (2014). Theoretical Modeling of Oxide-Photocatalysts for PEC Water Splitting. In: Viswanathan, B., Subramanian, V., Lee, J. (eds) Materials and Processes for Solar Fuel Production. Nanostructure Science and Technology, vol 174. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-1628-3_6
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