Fabrication of Al-Doped TiO₂ Visible-Light Photocatalyst for Low-Concentration Mercury Removal

Table 2

Atomic percentage of synthesized TiO₂ nanoparticles based on XPS examinations.

Al2O3/Ti mass ratio	Composition (at.%)
	O	Al	Ti	Cu
0	74.17	0	23.25	2.57
0.1	65.95	6.77	25.33	1.95
0.3	62.96	10.45	23.13	3.46
0.5	57.83	22.09	15.44	4.63