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首页> 外文期刊>International Journal of Electrochemical Science >Preparation of Magnetic Iron/Graphitic Mesoporous Carbon Composites as Efficient Returnable Adsorbents for Methyl Orange Removal
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Preparation of Magnetic Iron/Graphitic Mesoporous Carbon Composites as Efficient Returnable Adsorbents for Methyl Orange Removal

机译：磁性铁/石墨介孔碳复合材料的制备作为高效去除甲基橙的可回收吸附剂

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摘要

The mesoporous silica SBA-15 was regarded as the template to synthesize a variety of magneticiron/graphitic mesoporous carbon (Mag-GMC) composites, via a simple one-step solid-liquidgrinding/templating route. The physicochemical properties of these composites were characterized byX-ray diffractometry, nitrogen sorption isotherms, transmission electron microscopy and vibrating- sample magnetometry. The methyl orange (MO) removal effects of these composites as adsorbentswere investigated via a batch adsorption technique, and the effects of contact time and initial MOconcentration on the adsorption capacity were also discussed. Also, the zeta potential of the as- prepared Mag-GMC composites was measured and compared. Mag-GMC-0.5 shows the highest MOadsorption ability of 90.6 mg/g, which is much higher than that of commercial active carbon. Recycleadsorption experiments indicate that the Mag-GMC composites are promising in returnable dyeremoval. The excellent adsorption performance can be ascribing to its unique mesoporous structureand decent zeta potential.
机译：介孔二氧化硅SBA-15被认为是通过简单的一步固液研磨/模板化途径合成各种磁铁/石墨介孔碳（Mag-GMC）复合材料的模板。通过X射线衍射，氮吸附等温线，透射电子显微镜和振动样品磁法对这些复合材料的理化性质进行了表征。通过分批吸附技术研究了这些复合材料作为吸附剂的甲基橙（MO）去除效果，并讨论了接触时间和初始MO浓度对吸附容量的影响。而且，测量并比较了所制备的Mag-GMC复合材料的ζ电位。 Mag-GMC-0.5的最高MO吸附能力为90.6 mg / g，远高于商业活性炭。循环吸附实验表明，Mag-GMC复合材料在可回收的染料去除方面很有前景。优异的吸附性能归因于其独特的介孔结构和良好的ζ电势。

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