Adsorption of Hg(Ⅱ) in aqueous solution by γ-CD-MOFs-SH

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  • 1. College of Food Science and Technology,Shanghai Ocean University,Shanghai 201306;
    2. Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai 201306;
    3. National Experimental Teaching Demonstration Center for Food Science and Engineering (Shanghai Ocean University),Shanghai 201306

Received date: 2021-07-14

  Revised date: 2022-08-14

  Online published: 2022-11-30

Abstract

With γ-CD as the ligand and KOH as a metal ion,a eco-friendly water-insoluble γ-cyclodextrin polymer (γ-CD-MOFs-SH) coupled by KH580 was obtained for adsorption Hg(Ⅱ).The scanning electron microscopy (SEM),Fourier infrared spectroscopy (FT-IR),powder X-ray diffraction apparatus (XRD) and differential scanning calorimeter (TGA) were used to characterize the structure and the morphology of composite materials.The effect of experiment parameters on the adsorption performance was investigated.The results showed that the adsorption process of Hg(Ⅱ) was well clarified by pseudo-second-order kinetic model and Langmuir model.The theoretical maximum adsorption capacity was as high as 208mg/g.Additionally,the adsorption capacity of γ-CD-MOFs-SH still retained over 80% of the original capacity after 5 cycles of regeneration test,which exhibited an excellent regenerative adsorption performance.

Cite this article

Dong Qingli, Dang Lutong, Wu Kaili, Duan Song, Kang Yongfeng . Adsorption of Hg(Ⅱ) in aqueous solution by γ-CD-MOFs-SH[J]. New Chemical Materials, 2022 , 50(11) : 205 -211 . DOI: 10.19817/j.cnki.issn1006-3536.2022.11.041

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