化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (5) : 255-260.

开发与应用

Fe₃O₄@MnO₂复合纳米材料的制备及其对染料刚果红的吸附研究

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Preparation of Fe₃O₄@MnO₂ nanocomposite and its adsorption on congo red

Long Xingyu^1,2, Chen Kejin¹, Tan Xingli¹, Li Qiuhua³

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文章历史 +

Received
2019-11-13
Issue Date	Revised Date
2020-06-09	2019-11-13

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摘要

采用熔剂热法制备Fe₃O₄纳米微球,再通过金属氧化物沉积法,在Fe₃O₄微球表面沉积MnO₂,从而制备Fe₃O₄@MnO₂复合纳米材料,并通过SEM、EDS、FT-IR、XRD等技术手段表征,研究其对刚果红的吸附性能。分别考察了溶液初始pH、吸附剂的用量和吸附时间等因素对刚果红吸附的影响,并探究最优条件。在优化条件下测定Fe₃O₄@MnO₂复合纳米材料对刚果红的最大吸附量,为27.78mg/g。并通过等温Langmuir吸附和Freundlich等温吸附模型进行拟合。实验结果表明,Fe₃O₄@MnO₂复合纳米材料可以作为吸附染料刚果红的一种新型高效吸附剂材料。

Abstract

Fe₃O₄ nanometer microspheres were prepared by flux heat method,and MnO₂ was deposited on the surface of Fe₃O₄ microspheres by metal oxide deposition method.Fe₃O₄@MnO₂ were characterized by SEM,EDS,FT-IR,XRD,etc.The adsorption properties of congo red were studied.The influence factors of multiple conditions,such as initial pH of solution,dosage of adsorbent and adsorption time on congo red adsorption were investigated.The optimum conditions were found,and the maximum adsorption of Fe₃O₄@MnO₂ to congo red was determined under optimum conditions.the process was fitted by used the isothermal Langmuir adsorption and Freundlich isothermal adsorption,the maximum adsorption was calculated as 27.78mg/g.The results shown that Fe₃O₄@MnO₂ can be used as a new high efficiency adsorbent material for adsorption of dye congo red.

关键词

熔剂热法 / Fe₃O₄@MnO₂复合纳米材料 / 刚果红 / 吸附

Key words

solvothermal method / Fe₃O₄@MnO₂ composite nanomaterial / congo red / adsorption

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Fe₃O₄@MnO₂复合纳米材料的制备及其对染料刚果红的吸附研究[J]. 化工新型材料, 2020, 48(5): 255-260 DOI:

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