Figure 2From: Structure design and photocatalytic properties of one-dimensional SnO2-TiO2 compositesSEM and TEM images of different-structured SnO2-TiO2 composites. SEM image of (a) core-shell porous nanotube, (c) core-shell nanofibers, and (e) mixed nanofibers. TEM images of (b) core-shell porous nanotube, (d) core-shell nanofibers, and (f) mixed nanofibers.Back to article page