化工新型材料

化工新型材料 ›› 2022, Vol. 50 ›› Issue (4) : 303-306. DOI: 10.19817/j.cnki.issn1006-3536.2022.04.061

开发与应用

β-环糊精磁性复合微球的制备及其对Cr⁶⁺的吸附

作者信息 +

Synthesis of β-CDM and its adsorption property of Cr⁶⁺

Zhao Yang, Zhang Yongming, He Zemin, Guo Zhun, Miao Zongcheng, Zhao Yuzhen

Author information +

文章历史 +

Received		Published
2021-01-11		2022-04-20
Issue Date	Revised Date
2022-04-29	2021-01-11

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摘要

用自制的磁性Fe₃O₄对β-环糊精进行改性,制备了β-环糊精磁性复合微球(β-CDM),并对β-CDM的形貌、结构进行表征,研究其对Cr⁶⁺的吸附行为。结果表明:β-CDM外观圆整,表面稍粗糙,具有网状结构;Langmuir等温吸附方程和准二级动力学方程对吸附过程拟合度较高,吸附过程为单分子层有利吸附,既包含物理吸附,也包含化学吸附;β-CDM重复利用5次后,解吸率和吸附率均有所下降,但基本满足重金属废水处理的要求。

Abstract

β-cyclodextrin magnetic composite microspheres(β-CDM) were prepared by modified β-cyclodextrin that was modified with self-made magnetic Fe₃O₄.The morphology and structure of β-CDM were characterized,and discussed the adsorption behavior of Cr⁶⁺.The results showed that β-CDM was round and rough with reticular structure.The Langmuir equation and pseudo-second-order kinetic model could highly fit the adsorption process,and the adsorption was monolayer and favorable including physical and chemical adsorption.Although adsorption and desorption rate of β-CDM slightly decrease with β-CDM reused five times,the adsorption of β-CDM was basically statisfied with the requirements of heavy metal waste water treatment.

关键词

β-环糊精 / 微球 / 吸附 / 热力学 / 动力学

Key words

β-CD / microsphere / adsorption / dynamics / thermodynamics

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β-环糊精磁性复合微球的制备及其对Cr⁶⁺的吸附[J]. 化工新型材料, 2022, 50(4): 303-306 DOI:10.19817/j.cnki.issn1006-3536.2022.04.061

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