Shaped Photocatalysts: Surface Activation of Faceted Photocatalyst: When Metal Cocatalyst Determines the Nature of the Facets (Adv. Sci. 11/2015)

Surface activation of photocatalysts is central to H2 production from water via solar photocatalysis. In article number 1500153, M. Liu, L. Guo, and co-workers show, using shaped Cu2WS4 as model host photocatalyst, that a large percentage of the surface of the photocatalyst can be activated for H2 evolution by controllably depositing metal nanoparticles with tunable sizes onto targeted crystal facets.