Table 1.

Selectivity study of ZnO nanosheets adsorption toward different metal ions at pH 5.0 and 25°C (N= 5)

Metal ion	qe(mg g−1)	Kd(mL g−1)
Cd(II)	1.98	89,909.09
Mn(II)	1.53	3,237.29
Cu(II)	1.41	2,412.97
Y(III)	1.33	1,985.07
Pb(II)	1.25	1,666.67
La(III)	1.08	1,166.85
Hg(II)	0.73	568.63
Pd(II)	0.35	209.19