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Beilstein J. Nanotechnol. 2019, 10, 262–273, doi:10.3762/bjnano.10.25
Scheme 1: Synthetic route of our modified chelating material.
Figure 1: FTIR spectra of SiG, SiNH2 and SiNL.
Figure 2: SEM images of free silica (SiG), SiNH2 and SiNL.
Figure 3: Thermogravimetric profiles of free silica SiG, SiNH2 and SiNL.
Figure 4: Nitrogen adsorption–desorption isotherm plots of SiG, SiNH2 and SiNL.
Figure 5: Effect of pH on the adsorption of metal ions on SiNL, Adsorption dose: V = 10 mL, m = 10 mg of SiNL...
Figure 6: Effect of contact time on the adsorption capacity of Zn(II), Pb(II), Cd(II) and Cu(II) ions. Adsorp...
Figure 7: Pseudo-first-order and pseudo-second-order models fits for the adsorption of Zn(II), Pb(II), Cd(II)...
Figure 8: Effect of concentration on metal ion adsorption onto SiNL. Adsorption dose: 10 mg, V = 10 mL, at 25...
Figure 9: Langmuir and Freundlich adsorption models fits of Zn(II), Pb(II), Cd(II) and Cu(II)) on SiNL.
Figure 10: Effect of temperature for the sorption of metal ions onto SiNL (shaking time 60 min, pH 6, adsorpti...
Figure 11: Effect of metal ions on the extraction of Zn(II) with SiNL. (shaking time: 25 min, pH 6, T = 25 °C....