Adsorption studies of Pb (II) by two different magnetic MnFe2O4 materials synthesized with sol-gel process. Issue 200 (24th July 2019)

• Record Type: Journal Article
• Authors: Zeng, Qian; Zhang, Rongrong; Cui, Yuqian
• Is Part Of: Integrated ferroelectrics. Issue 200(2019)
• Page Start: 176
• Page End: 190
• Publication Date: 2019-07-24
• Subjects: Magnetic materials -- Nanocomposite -- Lead -- Adsorption; Ferroelectric devices -- Periodicals; Integrated circuits -- Periodicals; 537.244805
• DOI: 10.1080/10584587.2019.1592080
• Languages: English
• ISSNs: 1058-4587

Abstract

Abstract: The spherical nanomaterials of MnFe-Ac and MnFe-Na can be synthesized with sol-gel method. The adsorption test of Pb (II) was carried out with two kinds of synthesized nanomaterials, and discussed their adsorption effects of Pb (II). The characteristic was analyzed by SEM, XRD, XPS and magnetic measurements. As the results showeed, the particles size of the material became smaller, but the morphology did not change after adsorption. The change of Ms was from 42.7 and 62.0 emu/g to 25.6 and 89.4 emu/g, respectively. By Langmuir and Freundlich models, the maximum adsorption amounts of Pb (II) were 23.40 and 41.56 mg/g, respectively, and analysis demonstrated that the adsorption of Pb (II) on samples was monolayer adsorption. The kinetic analysis showed that the adsorption of Pb (II) on the two materials was more in accordance with the pseudo-second-order model, which indicated that adsorption process of the materials for Pb (II) were primarily limited by the chemical adsorption.