Anodic CaO-TiO₂ Nanotubes Composite Film for Low Temperature CO₂ Adsorption

Figure 2

EDX spectra of (a) pure TiO₂ and CaO-TiO₂ composite film with different concentrations of Ca(NO₃)₂, (b) 0.01 M, (c) 0.05 M, and (d) 0.10 M.

(a)

(b)

(c)

(d)