Fig. 2

FT-IR spectra of the a) Zn-Co-Fe/LDH, b) Zn-Co-Fe/LDH after adsorption of As3+, c) Zn-Co-Fe/LDH after adsorption of Pb2+, and d) Zn-Co-Fe/LDH after adsorption of Hg2+.

FT-IR spectra of the a) Zn-Co-Fe/LDH, b) Zn-Co-Fe/LDH after adsorption of As3+, c) Zn-Co-Fe/LDH after adsorption of Pb2+, and d) Zn-Co-Fe/LDH after adsorption of Hg2+.