Photocatalytic Decomposition of Toluene Vapor by Bare and TiO₂-coated Carbon Fibers

The photocatalytic decomposition of toluene vapor by bare and TiO2-coated carbon fibers was studied. Atomic layer deposition (ALD) was used to perform the TiO2 coating. We show that, under our conditions, the photocatalytic activity of bare carbon fibers was comparable with that of TiO2 films, which are known to be good photocatalysts. The origin of high photocatalytic activity of bare carbon fibers is discussed.