Development of a magnetic core-shell FeO@TA@UiO-66 microsphere for removal of arsenic(III) and antimony(III) from aqueous solution.

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ID: 34758
2019
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Abstract
Removal of trivalent species of As and Sb from wastewater is crucial due to their more toxic and mobile properties. In this study, a novel magnetic core-shell microsphere FeO@TA@UiO-66 was developed via in-situ crystal growth of UiO-66 around the magnetic FeO modified by Tannic Acid (TA). Characterization of the microsphere by transmission electron microscopy (TEM) and X-ray diffraction spectroscopy (XRD) confirmed that UiO-66 was adhered on the surface of FeO functionalized by TA. Adsorption experiments showed that the magnetic FeO@TA@UiO-66 had high adsorption capacity for As(III) and Sb(III) and could be rapidly separated from aqueous media within two minutes after treatment. The adsorption kinetics and adsorption isotherms were described well by the pesudo-second order model and Langmuir model, respectively. In addition, the composite exhibited excellent removal performance for As(III) and Sb(III) in a broad solution chemistry environment, including pH and co-existing anions. Based on X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) measurement, we proposed that the removal mechanism was mainly controlled through a synergistic interaction of surface complexation and hydrogen bonding. This study indicates the potential of the magnetic microsphere to be used as an effective material for the removal of As(III) and Sb(III) from water.
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qi2019developmentjournal Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Qi, Pengfei;Luo, Rong;Pichler, Thomas;Zeng, Jianqiang;Wang, Yan;Fan, Yuhua;Sui, Kunyan;
Journal Journal of hazardous materials
Year 2019
DOI
S0304-3894(19)30664-8
URL
Keywords Keywords not found

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