Review ArticleA Review on Nanotube Film Photocatalysts Prepared by Liquid-Phase Deposition
Figure 3
FE-SEM of titanium oxide nanotubes array films: (a) AAO membrane (oxalic acid), (b) AAO membrane (phosphoric acid), (c) surface morphology of titanium oxide nanotubes array films (oxalic acid), and (d) surface morphology of titanium oxide nanotubes array films (phosphoric acid) [54].