Table 1.

Selectivity study of CuO-TiO₂NSs phase adsorption towards different metal ions at pH 5.0 and 25°C (N = 5)

Metal Ion	qe(mgg−1), TiO2	qe(mgg−1), CuO-TiO2	Kd(mLg−1),TiO2	Kd(mLg−1),CuO-TiO2
Fe(III)	0.781	0.981	3557.885	50546.392
Au(III)	0.150	0.153	175.938	180.638
Zn(II)	0.054	0.060	57.082	63.830
Pd(II)	0.047	0.050	49.318	52.632
Co(II)	0.036	0.040	37.344	41.667
Cd(II)	0.007	0.010	7.049	10.101
Cr(III)	0.009	0.010	9.082	10.101