Imidazole and Polyester Modified Balangu/Fe3O4/Kaolinite Bio-Nanocomposites: Synthesis, Characterization, and their Application for Pb2+ Removal: Optimization by Response Surface Methodology
نویسندگان
1 Department of Environment, Institute of Science and High Technology and Environmental Sciences, Graduate University of Advanced Technology, Kerman, Iran
2 Department of Chemistry, Faculty of Science, Shahid Bahonar University of Kerman, Kerman, Iran
3 Department of Mining Engineering, Higher Education Complex of Zarand, Shahid Bahonar University of Kerman, Kerman, Iran
4 Department of Chemistry, Faculty of science, Shahid Bahonar University of Kerman, Kerman, Islamic Republic of Iran
doi
10.22036/org.chem.2024.482199.1355چکیده
Magnetic nanoparticles, aluminosilicates, and natural polysaccharides have recently attracted a huge deal of attention due to their unique properties and extensive applications. Balangu is a natural polysaccharide with high swelling and environmental compatibility, which can be coordinated with the metal cations due to its hydroxyl functional groups. In this research, three new nanocomposites with improved coordination ability were synthesized for the first time. The first nanocomposite included iron oxide, Balangu gel, and kaolinite. In the second nanocomposite, an imidazole derivative was loaded the first nanocomposite. Finally, a type of polyester was produced in Balangu/Fe3O4/kaolinite matrix at room temperature. Structures of these nanocomposites were assessed by TGA, SEM, FTIR, and XRD techniques. The ability of nanocomposites to eliminate Pb+2 from aqueous solution was also investigated. The RSM method was utilized to optimize the experimental conditions. The maximum adsorption capacity of Pb (II) for Balangu/Fe3O4/kaolinite, Balangu/Fe3O4/kaolinite/Imidazol, and Balangu/ Fe3O4/ kaolinite/ polyester were 29.48, 37.87, and 43.95 mg/g respectively.
