Walking the wire: Real-time imaging helps reveal active sites of photocatalysts
(PHYSorg.com Nanotechnology)

Nanoscale photocatalysts are small, man-made particles that harvest energy from sunlight to produce liquid fuels and other useful chemicals. But even within the same batch, the particles tend to vary widely in size, shape and surface composition. That makes it hard for researchers to tell what`s really doing the work.