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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Synthesis of aluminum-based MOF/graphite oxide composite and enhanced removal of methyl orange
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Synthesis of aluminum-based MOF/graphite oxide composite and enhanced removal of methyl orange

机译：铝基MOF /石墨氧化物复合材料的合成提高甲基橙

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摘要

An aluminum-based MOF/graphite oxide composite, MIL-68(Al)/GO, was synthesized and used to explore its adsorption performance toward methyl orange (MO). The products were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and N-2 adsorption-desorption. Compared to parent material, the composite possessed higher total pore volume and surface area. Meanwhile, a sandwich construction for the composite, with a preserved structure of MIL-68(Al) and GO, was also observed. Considering adsorption application, some key operating factors, adsorption isotherms, kinetics, mechanism, and regeneration were investigated. The adsorption isotherm conformed to the Langmuir isotherm model and the maximum equilibrium adsorption capacity was 400 mg/g. For kinetics, the process of adsorption was more suitably described by a pseudo-second-order model. Moreover, this material can be used over a wide pH range and exhibited superior adsorption performance and regenerability for the adsorption of MO. From these results, MIL-68(Al)/GO was suggested here to be a promising adsorbent for removing MO from aqueous solution. (C) 2017 Elsevier B.V. All rights reserved.
机译：合成铝基MOF /石墨氧化物复合材料，MIL-68（A1）/ GO，并用于探讨其对甲基橙（MO）的吸附性能。该产品的特征在于X射线衍射（XRD），傅里叶变换红外光谱（FTIR），扫描电子显微镜（SEM），X射线光电子能谱（XPS）和N-2吸附 - 解吸。与母材相比，复合材料具有更高的总孔体积和表面积。同时，还观察到夹层施工，具有保存的MIL-68（Al）和Go的保存结构。考虑到吸附申请，研究了一些关键操作因素，吸附等温线，动力学，机制和再生。吸附等温符合Langmuir等温模型，最大平衡吸附容量为400mg / g。对于动力学，通过伪二阶模型更适当地描述吸附过程。此外，该材料可在宽的pH范围内使用，并表现出优异的吸附性能和可再生性以吸附Mo。从这些结果来看，MIL-68（A1）/ GO被提出，这里是从水溶液中除去MO的有希望的吸附剂。 （c）2017年Elsevier B.V.保留所有权利。

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