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Facilely Magnetized CuZnFe2O4-Activated Carbon Composite as an Efficient Recyclable Adsorbent of Cationic Dyes
Journal of Chemical & Engineering Data ( IF 2.0 ) Pub Date : 2020-10-06 , DOI: 10.1021/acs.jced.0c00643
Lihua Zhang 1 , Kun Yang 1
Affiliation  

In this work, a CuZnFe2O4-loaded activated carbon composite (CZF-AC) was synthesized by a simple one-pot hydrothermal method. The obtained material was characterized by X-ray diffraction (XRD), field-emission scanning electron microscopy (FE-SEM), Fourier transform infrared spectroscopy (FTIR), transmission electron microscopy (TEM), and vibrating sample magnetometer (VSM), which proved that it possessed good magnetic response and retained the physical and chemical properties of the original activated carbon. Cationic dyes such as methylene blue, malachite green, and rhodamine B were removed from aqueous solutions using the obtained magnetic activated carbon as the adsorbent. The adsorption behavior of these cationic dyes onto the CZF-AC was systematically studied via dynamic and equilibrium adsorption experiments. Good adsorption capacity (100 to 970 mg dye/g CZF-AC), fast adsorption kinetics (reaching equilibrium within 20 min), and excellent reusability (no adsorption performance loss even after 4 adsorption–desorption round) were observed for the synthesized CZF-AC. This work not only provides a facile method for the construction of magnetic carbon adsorbents but also gives a potential green magnetization strategy for other functional materials.

中文翻译:

易磁化的CuZnFe 2 O 4活性炭复合材料作为阳离子染料的高效可回收吸附剂

在这项工作中,CuZnFe 2 O 4采用简单的一锅水热法合成了负载活性炭复合材料(CZF-AC)。通过X射线衍射(XRD),场发射扫描电子显微镜(FE-SEM),傅立叶变换红外光谱(FTIR),透射电子显微镜(TEM)和振动样品磁力计(VSM)对所得材料进行表征。证明它具有良好的磁响应并保留了原始活性炭的物理和化学性质。使用获得的磁性活性炭作为吸附剂,从水溶液中除去亚甲基蓝,孔雀石绿和若丹明B等阳离子染料。通过动态和平衡吸附实验系统地研究了这些阳离子染料在CZF-AC上的吸附行为。良好的吸附能力(100至970 mg染料/ g CZF-AC),对于合成的CZF-AC,观察到了快速的吸附动力学(在20分钟内达到平衡)和出色的可重复使用性(即使经过4次吸附-解吸循环,也没有吸附性能损失)。这项工作不仅为构造磁性碳吸附剂提供了一种简便的方法,而且为其他功能材料提供了潜在的绿色磁化策略。
更新日期:2020-11-12
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