Visualization of the inner workings of photocatalysts.
Renewable energy sources are of great interest for reducing our dependence on fossil fuels. Light-activated catalysts — known as photocatalysts — are promising in this regard, because they convert solar energy to chemical energy that is stored in the bonds of fuel molecules.
Progress in this field will require the development of new photocatalytic materials. But future advances will also hinge on an improved understanding of how electric charges are generated and transferred within photocatalyst particles, so that the particles can be rationally tuned for solar-to-fuel conversion. Such insight is challenging to obtain, given the extremely wide range of timescales and length scales involved.
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