Preparation of Porous F-WO3/TiO2 Films with Visible-Light Photocatalytic Activity by Microarc Oxidation
Figure 4
SEM plain images of (a) mTiO2, (b) nTiO2, and (c) uTiO2 films and (d) FIB projected image of the mTiO2 film, where the squared crater at the center was the TEM sample cut from.
