Magnetic Fe3O4/ZnCr-layered double hydroxide composite with enhanced adsorption and photocatalytic activity
Magnetic Fe3O4/ZnCr-layered double hydroxide composite with enhanced adsorption and photocatalytic activity
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具有增强吸附和光催化活性的磁性 Fe3O4/ZnCr 层状双氢氧化物复合材料
DOI：
10.1016/j.cej.2012.01.059
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发表时间：
2012-03-15
影响因子：
15.1
通讯作者：
Liu, Hong
中科院分区：
文献类型：
--
作者：
Chen, Dan;Li, Yang;Liu, Hong
采用两步微波水热法制备了新型磁性Fe 3 O 4/ZnCr-层状双氢氧化物（LDH）复合材料。通过X射线衍射（XRD）、傅里叶变换红外光谱（FTIR）、扫描电镜（SEM）和透射电镜（TEM）对样品进行了表征，结果表明，Fe 3 O 4纳米粒子分布在ZnCr-LDH表面，粒径在10 nm左右。这提供了复合物的磁性，这改善了复合物从水溶液中的分离。在紫外光照射下，该复合材料对甲基橙子（MO）的吸附量为528 mg/g，对亚甲基蓝（MB）的降解率为95%。结果表明，在相同条件下，与ZnCr-LDH相比，复合材料对染料的去除率更高。因此，我们的工作表明新型磁性Fe 3 O 4/ZnCr-LDH复合材料适用于有机染料废水的处理。(c)2012爱思唯尔有限公司版权所有。
The novel magnetic Fe3O4/ZnCr-layered double hydroxide (LDH) composite has been successfully fabricated via two-step microwave hydrothermal method. The characterization by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscope (SEM) and transmission electron microscope (TEM) reveals the Fe3O4 nanoparticle in size of around 10 nm distributed on the surface of ZnCr-LDH. This provided the magnetic property of the composite, which improved the separation of the composite from aqueous solution. Moreover, the composite adsorbed 528 mg/g of methyl orange (MO) as well as decomposed similar to 95% of methylene blue (MB) under UV irradiation. The results reveal a higher removal of dye on the composite, compared to that on ZnCr-LDH under the same conditions. Therefore, our work suggests the novel magnetic Fe3O4/ZnCr-LDH composite to be applicable for organic dyes wastewater treatment. (c) 2012 Elsevier B.V. All rights reserved.