Title: Experimental study on adsorption properties of functional magnetic nanomaterials for heavy metal pollutants

Authors: Lei Zhang; Yingying Fei

Addresses: College of Life Science, Shenyang Normal University, Shenyang, 110034, China ' College of Life Science, Shenyang Normal University, Shenyang, 110034, China

Abstract: In order to effectively remove heavy metal pollutants and improve the quality of the ecological environment, the experimental study on adsorption properties of functional magnetic nanomaterials for heavy metal pollutants was studied. Magnetic nano-Fe₃O₄ materials were prepared by hydrothermal method. Fe₃O₄, Fe₃O₄@SiO₂ and 3NH₂-Fe₃O₄@SiO₂ magnetic nanomaterials were obtained by functional modification. The adsorption properties of functionalised magnetic nanomaterials for Cd(II) and Pb(II) in water were analysed by batch test. The results show that 3NH₂-Fe₃O₄@SiO₂ has the highest adsorption capacity for Cd(II) and Pb(II); with decreasing temperature, the order of adsorption capacity for Pb(II) is Fe₃O₄ > Fe₃O₄@SiO₂ > 3NH₂-Fe₃O₄@SiO₂. The Langmuir adsorption isotherm model can better fit the adsorption process of functionalised magnetic nanomaterials to Cd(II) and Pb(II) solutions. In different initial heavy metal solution concentration systems, the materials can promote the adsorption of Cd(II) and Pb(II) adsorption.

Keywords: functionalised magnetic nanomaterials; heavy metal pollutants; adsorption performance; isothermal model.

DOI: 10.1504/IJMPT.2023.130201

International Journal of Materials and Product Technology, 2023 Vol.66 No.3/4, pp.354 - 367

Received: 25 Apr 2022
Accepted: 02 Aug 2022
Published online: 06 Apr 2023 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article