Research Article
Visible-Light Photodegradation of Dye on Co-Doped Titania Nanotubes Prepared by Hydrothermal Synthesis
Figure 2
Adsorption (solid symbol)/desorption (empty symbol) isotherms of N2 onto titania nanotubes at −196°C: (a) Co-1-TNT; (b) Co-3-TNT; (c) Co-5-TNT; (d) Co-7-TNT.