Scheme 2

Possible interactions between heavy metals, Cd(II) and Pb(II), and the surface of the Ni50Co50-LDH-COOH/UiO-66(Zr)-(COOH)2 NC adsorbent.

Possible interactions between heavy metals, Cd(II) and Pb(II), and the surface of the Ni50Co50-LDH-COOH/UiO-66(Zr)-(COOH)2 NC adsorbent.