Chemists challenge conventional understanding of how photocatalysis works

Photocatalysts are most often semiconductors, with metals (platinum, gold) added to promote their activity. However, these metals (or 'promoters') are expensive; hence the quest for more economical alternatives. Now a team of chemists has come up with a model to explain this promoting effect that could shift the focus in the search for substitutes of the metals, and help identify better promoters for photocatalysis in the near future.http://feeds.sciencedaily.com/~r/sciencedaily/~3/v...