Visible-Light Photodegradation of Dye on Co-Doped Titania Nanotubes Prepared by Hydrothermal Synthesis

Table 2

Lattice parameters and interlayer distances of TiO₂ nanotubes with different amounts of Co dopants, based on the XRD patterns.

Materials	c (nm)	a (nm)	𝑑(200) (nm)	𝑑(004) (nm)
P25	0.9508	0.3708	0.1864	0.2377
TNT	0.9502	0.3710	0.1865	0.2380
Co-1-TNT	0.9544	0.3734	0.1867	0.2386
Co-3-TNT	0.9556	0.3748	0.1874	0.2389
Co-5-TNT	0.9568	0.3756	0.1878	0.2392
Co-7-TNT	0.9576	0.3786	0.1893	0.2394