Research Article

Modification of One-Dimensional TiO2 Nanotubes with CaO Dopants for High CO2 Adsorption

Figure 5

XRD pattern of TiO2 nanotubes incorporated with Ca in 0.6 M Ca(NO3)2 solution at different soaking period: (a) pure TiO2, (b) 24 hours, (c) 48 hours, and (d) 72 hours (A = anatase phase; T = titanium phase).
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