Gas-Supported High-Photoactivity TiO₂ Nanotubes

Figure 1

TEM images of (a) titanate nanotubes, (b) TiO₂-NTs@@SiO₂ with “open-ended” structure (500°C, 2 h). (c) XRD pattern of TiO₂-NTs@@SiO₂ calcined at various temperatures. (d) TiO₂-NRs@@SiO₂ with “close-ended” structure (over 600°C, 2 h) and EDS spectra of the sample (inset).

(a)

(b)

(c)

(d)