caa a22 4500 606169024 CHVBK 20210128100710.0 cr unu---uuuuu 210128e20150801xx s 000 0 eng 10.1007/s10098-015-0898-9 doi (NATIONALLICENCE)springer-10.1007/s10098-015-0898-9 Modified ZnO nanoparticles with new modifiers for the removal of heavy metals in water [Elektronische Daten] [Shahriar Mahdavi, Abbas Afkhami, Hajar Merrikhpour] We prepared novel ZnO nanoparticles (NPs) modified with humic acid (Zn-H), extractant of Walnut shell (ZN-W) and 1,5 diphenyl carbazon (Zn-C). Three modified nanoparticles (MNPs) were characterized by SEM, XRD, FT-IR spectra, and EDX analysis. The images showed that Zn-H, Zn-W, and Zn-C particles had mean diameters of about 52, 56, and 76nm, respectively. We explored the ability of the MNPs for removing heavy metal ions (Cd2+, Cu2+, and Ni2+) from aqueous phase in single and multiple solutions. Based on the average metal removal by the three NPs, the following order was determined for single and multiple component solutions: Cu2+>Cd2+>Ni2+. We investigated the adsorption capacity of MNPs as a function of contact time, pH, and metal ions concentration (isotherm). Among different isotherm models, it was found that the Langmuir model showed better correlation with the experimental data than Freundlich model. Spectroscopic analyses such as SEM-EDX and saturation indexes have been investigated to study the mechanism of sorption of metal ions by MNPs. The high adsorption capacities of the MNPs shown from the results make them promising candidates for removal of the tested heavy metal ions. Springer-Verlag Berlin Heidelberg, 2015 Modified ZnO nanoparticles nationallicence Heavy metals nationallicence Removal nationallicence Water nationallicence Mahdavi Shahriar Department of Soil Science, College of Agriculture, Malayer University, Malayer, Iran aut Afkhami Abbas Department of Analytical Chemistry, College of Chemistry, Bu-Ali Sina University, Hamedan, Iran aut Merrikhpour Hajar Department of Chemistry, University of Sayyed Jamaleddin Asadabadi, Asadabad, Hamedan, Iran aut Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/6(2015-08-01), 1645-1661 1618-954X 17:6<1645 2015 17 10098 https://doi.org/10.1007/s10098-015-0898-9 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10098-015-0898-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Mahdavi Shahriar Department of Soil Science, College of Agriculture, Malayer University, Malayer, Iran aut NATIONALLICENCE 700 1- Afkhami Abbas Department of Analytical Chemistry, College of Chemistry, Bu-Ali Sina University, Hamedan, Iran aut NATIONALLICENCE 700 1- Merrikhpour Hajar Department of Chemistry, University of Sayyed Jamaleddin Asadabadi, Asadabad, Hamedan, Iran aut NATIONALLICENCE 773 0- Clean Technologies and Environmental Policy Springer Berlin Heidelberg 17/6(2015-08-01), 1645-1661 1618-954X 17:6<1645 2015 17 10098