Fig. 5

Zn K-edge EXAFS spectra of Zn-reference compounds and Zn-reacted γ-Al₂O₃ samples after reaction of 48 h at pH 7.5: a k³-weighted functions; b the corresponding Fourier transform uncorrected for phase shift. Experimental data are shown as colored solid lines and fitted data as dark gray circles. Ni–Zn–Al LDH (in Fig. 4) and Zn–Ni–Al LDH (in this figure) are the same sample and used to refer the spectrum collected from Ni and Zn K-edges, respectively. Ni–Zn–Al Alox (Fig. 4) and Zn–Ni–Al Alox (in this figure) are the same sample and used to refer the spectrum collected from Ni and Zn K-edges, respectively