Preparation of Magnetic Chitosan Semi-Interpenetrating Thermo-swelling Hydrogels and Its Adsorption for Cr(Ⅵ)

被引：0
|
作者：
Wang Y. [1 ]
Ren J. [1 ]
Zhao J. [1 ]
Zhou J. [1 ]
Li X. [1 ]
机构：
[1] School of Chemistry and Materials Science, Guizhou Education University, Guiyang
来源：
Cailiao Daobao/Materials Reports | 2021年 / 35卷 / 10期
基金：
中国国家自然科学基金;
关键词：
Adsorption removal; Chitosan; Cr(Ⅵ); Magnetism; Thermo-swelling hydrogel;
D O I：
10.11896/cldb.20020081
中图分类号：
学科分类号：
摘要：
Chitosan semi-interpenetrating thermo-swelling hydrogels (Semi-INP) were synthesized by chitosan, acrylamide, and thermosensive macromonomer as raw materials and N, N'-methylenebis (acrylamide) as crosslinker through aqueous solution semi-interpenetrating network polymerization method. Magnetic chitosan semi-interpenetrating thermo-swelling hydrogels (Semi-INP/Fe3O4) were obtained by introducing Fe3O4 nanoparticles into Semi-INP through an in situ chemical co-precipitation method. The prepared samples were characterized by Fourier transform infrared spectrometer (FTIR), X-ray diffraction (XRD), thermal gravimetry (TG), and field emission scanning electron microscopy (SEM). The thermo-swelling property and the effects of adsorption time, temperature, absorbent dosage on the adsorption of Cr(Ⅵ) were investigated. Experimental results show Semi-INP/Fe3O4 were successfully prepared, and the hydrogels had good thermo-swelling properties. The adsorption removal of Cr(Ⅵ) increased with the increasing of adsorption time and adsorption temperature. The increase of absorbent dosage would raise the removal efficiency. At the condition of temperature is 70 ℃, pH=3.0, 10 g/L Semi-INP3/Fe3O4, and the initial Cr(Ⅵ) concentration is 10 mg/L, the removal efficiency could reach 98.03%. © 2021, Materials Review Magazine. All right reserved.
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页码：10205 / 10210
页数：5
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