Figures & data
Figure 1. FTIR spectra of chitosan, MNPs, Ch-MNPs, and Pb (II) loaded Ch-MNPs [Citation16].
![Figure 1. FTIR spectra of chitosan, MNPs, Ch-MNPs, and Pb (II) loaded Ch-MNPs [Citation16].](/cms/asset/4b716f92-2da7-4fcb-87d0-de199166e76b/ynan_a_2347804_f0001_c.jpg)
Figure 2. HR-TEM analysis represented the size and shape of Ch-MNPs (a–b). Arrows indicate the lattice fringes (b), (c) SAED pattern [Citation16].
![Figure 2. HR-TEM analysis represented the size and shape of Ch-MNPs (a–b). Arrows indicate the lattice fringes (b), (c) SAED pattern [Citation16].](/cms/asset/db0b60bf-63c4-4044-a931-54b85b91bf1e/ynan_a_2347804_f0002_c.jpg)
Figure 3. HR-SEM micrographs of Ch-MNPs before (a) and after Pb (II) adsorption (b) [Citation16].
![Figure 3. HR-SEM micrographs of Ch-MNPs before (a) and after Pb (II) adsorption (b) [Citation16].](/cms/asset/161da66f-a246-4ba7-a245-4b81d2b144ca/ynan_a_2347804_f0003_b.jpg)
Figure 4. EDX analysis (a) and elemental mapping representing the distribution of all elements (b), carbon (c), nitrogen (d), oxygen (e), manganese (f), and Pb (g).
![Figure 4. EDX analysis (a) and elemental mapping representing the distribution of all elements (b), carbon (c), nitrogen (d), oxygen (e), manganese (f), and Pb (g).](/cms/asset/30f78e58-c898-4e8b-94d2-0eb8d1d47d69/ynan_a_2347804_f0004_c.jpg)
Figure 5. Effect of pH (a), initial Pb(II) concentration (b), Ch-MNPs dosage (c), temperature (d), contact time (e), and agitation rate (f) for Pb(II) adsorption onto Ch-MNPs.
![Figure 5. Effect of pH (a), initial Pb(II) concentration (b), Ch-MNPs dosage (c), temperature (d), contact time (e), and agitation rate (f) for Pb(II) adsorption onto Ch-MNPs.](/cms/asset/d90ce62b-acd9-4b12-af8e-72d7125e403c/ynan_a_2347804_f0005_c.jpg)
Figure 6. Langmuir (a), Freundlich (b), Temkin (c), and Halsey (d) isotherms of Pb(II) adsorption on Ch-MNPs.
![Figure 6. Langmuir (a), Freundlich (b), Temkin (c), and Halsey (d) isotherms of Pb(II) adsorption on Ch-MNPs.](/cms/asset/0015b9d9-5360-43f4-9d35-e5ab05b0ad27/ynan_a_2347804_f0006_c.jpg)
Table 1. The isotherm parameters of Pb(II) adsorption at various temperature.
Table 2. Kinetics of Pb(II) adsorption.
Table 3. Thermodynamic data for adsorption of Pb(II) on to Ch-MNPs.
Table 4. Comparison of Pb(II) removal capacity of Ch-MNPs with other nanoparticles.