Preparation of Hollow Magnetic Graphene Oxide and Its Adsorption Performance for Methylene Blue

被引：0
|
作者：
Que A. [1 ]
Zhu T. [1 ]
Zheng Y. [1 ]
机构：
[1] Department of Materials Science and Engineering, Fuzhou University, Fuzhou
来源：
Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research | 2021年 / 35卷 / 07期
关键词：
Adsorption; Composite; Hollow graphene oxide; Magnetic; Methylene blue;
D O I：
10.11901/1005.3093.2020.579
中图分类号：
学科分类号：
摘要：
The Fe3O4 coated polystyrene microsphere (PS), namely Fe3O4@PS was firstly fabricated by co-precipitation method with FeCl2·6H2O and FeCl3 as raw material, and PS microsphere as tempelate. Then Fe3O4@PS was immersed in toluene solution for removing the PS template. Next, the hollow Fe3O4 microsphere was coated with graphene oxide sheets under sonication to produce the hollow magnetic graphene oxide (HMGO). Subsequently, the absorption performance of the HMGO for methylene blue (MB) was assessed in an artificial waste MB solution. Results verified that the adsorption process reach to equilibrium at 55℃ after 60 min. The maximum adsorption capacity of MB on HMGO is 349.85 mg·g-1. The adsorbent shows good stability and reusability, after 8 times recycling the adsorption rate is still higher than 80%. The adsorption process of MB on HMGO can be well fitted by Pseudo-second-order kinetic model and the adsorption rate is sensitive to the initial concentration. The adsorption isotherm conforms to the Langmuir isotherm model, and the adsorption process is a single-layer surface adsorption. © 2021, Editorial Office of Chinese Journal of Materials Research. All right reserved.
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页码：517 / 525
页数：8
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