[Retracted] Highly Active Rare-Earth-Metal La-Doped Photocatalysts: Fabrication, Characterization, and Their Photocatalytic Activity

Table 1

Physicochemical characteristic of TiO₂ and La-doped TiO₂ photocatalysts.

Photocatalyst	Crystal size (D) nm	Lattice parameter (a) nm	Lattice parameter (c) nm	Unit cell; volume; (nm^3)
TiO2	40.10	0.37728	0.95015	0.1356
0.3 wt% La-TiO2	33.12	0.37772	0.95069	0.1357
0.5 wt% La-TiO2	30.56	0.37726	0.95051	0.1356
0.7 wt% La-TiO2	21.41	0.37722	0.95031	0.1357
1.0 wt% La-TiO2	19.87	0.37735	0.95024	0.1356
1.5 wt% La-TiO2	19.80	0.37754	0.95075	0.1356
Pure ZnO	53.11	0.3248	0.5205	0.0476
1.0% La-ZnO	20.58	0.3267	0.5182	0.0472