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蛋黄壳结构磁性介孔二氧化硅：一种用于去除亚甲基蓝的新型高效吸附剂。

Yolk-shell structured magnetic mesoporous silica: a novel and highly efficient adsorbent for removal of methylene blue.

作者信息

Mirbagheri Reza, Elhamifar Dawood, Shaker Masoumeh

机构信息

Department of Chemistry, Yasouj University, 75918-74831, Yasouj, Iran.

出版信息

Sci Rep. 2021 Dec 1;11(1):23259. doi: 10.1038/s41598-021-02699-w.

DOI:10.1038/s41598-021-02699-w
PMID:34853407
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC8636501/
Abstract

In this study, a novel magnetic mesoporous silica with yolk-shell structure (FeO@Void@m.SiO) was successfully synthesized via a polymer-template assisted method. The FeO@Void@m.SiO was characterized by using FT-IR, EDS, SEM, TEM, VSM, PXRD and nitrogen adsorption-desorption analyses. The FeO@Void@m.SiO nanocomposite showed high efficiency in adsorption of an organic dye and water pollutant called methylene blue (MB) with 98.2% removal capability. Furthermore, the effect of different parameters in the adsorption of MB was investigated. Different models of kinetic were examined and compared with each other. The recoverability and reusability of designed FeO@Void@m.SiO material were also studied under applied conditions.

摘要

在本研究中，通过聚合物模板辅助法成功合成了一种具有蛋黄壳结构的新型磁性介孔二氧化硅（FeO@Void@m.SiO）。采用傅里叶变换红外光谱（FT-IR）、能谱分析（EDS）、扫描电子显微镜（SEM）、透射电子显微镜（TEM）、振动样品磁强计（VSM）、粉末X射线衍射（PXRD）和氮吸附-脱附分析对FeO@Void@m.SiO进行了表征。FeO@Void@m.SiO纳米复合材料对有机染料和水污染物亚甲基蓝（MB）具有高效吸附能力，去除率达98.2%。此外，还研究了不同参数对MB吸附的影响。考察并比较了不同的动力学模型。在应用条件下，还研究了所设计的FeO@Void@m.SiO材料的可回收性和可重复使用性。

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