Synthesis and selective adsorption properties of anionic β-cyclodextrin magnetic microspheres

被引：0
作者：
机构：
[1] Shaanxi University of Science and Technology, Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry, Ministry of Education
来源：
Shen, Y.-D. (ydshen@sust.edu.cn) | 1600年 / Journal of Functional Materials卷 / 45期
关键词：
Adsorption; Anion; Kinetics; Magnetic microspheres; β-cyclodextrin;
D O I：
10.3969/j.issn.1001-9731.2014.10.026
中图分类号：
学科分类号：
摘要：
In this paper, anionic β-cyclodextrin magnetic microsphere (β-CDM) was prepared by using β-CD, FeCl2, Fe2(SO4)3 and Na3P3O9 as main materials. The characterization and performance tests such as X-ray diffraction (XRD), scanning electron microscope (SEM), particle size analysis, TGA and atomic absorption spectroscopy were further studied. The results show the morphology of β-CDM presents regular spherical and the average particle size was 93.5 μm. Thermal performance increases with increasing Fe3O4 content. It demonstrates elective adsorption for Cu2+, Mn2+ and Zn2+. The maximum removal rate of Mn2+ reaches 98.59%. The simulation results by quasi secondary adsorption kinetics show that the adsorption rate constant K2 (g/(mg·min)) for Cu2+, Zn2+, Mn2+ can reach 0.1851, 0.1068, 0.1584, respectively. And it takes the shortest time for Cu2+ to reach equilibrium. What's more, recycle studies show that β-CDM was in favor of separation and regenerate under the magnetic field.
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页码：10113 / 10108
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