磁性LDHs复合材料的制备及可见光光催化性能研究

发布时间：2018-04-03 00:16

本文选题：层状双金属氢氧化物(LDHs)　切入点：磁性能　出处：《人工晶体学报》2017年09期

【摘要】：材料复合过程组成单元间的相互作用有利于光生电子空穴对的分离,是提高材料光催化活性的一条有效途径。以Mg-Al-LDHs为主,利用直接包覆法在Fe_3O_4表面垂直生长生长LDHs,并引入Cu元素,得到了可见光光催化性能良好的Fe_3O_4/Cu-Mg-Al-LDHs复合材料。利用X-射线衍射、扫描电镜、X射线光电子能谱、红外光谱和交变梯度磁强计等测试方法研究了样品的形貌、粒径、结晶性、磁性能和元素。对比分析了单一材料、单一材料简单混合样品和Fe_3O_4/Cu-Mg-Al-LDHs复合材料对甲基橙光催化降解效果。实验结果表明,Fe_3O_4/Cu-Mg-Al-LDHs复合材料对甲基橙表现出良好的光催化效果,同时良好的磁性能有利于吸附剂的回收。
[Abstract]:The interaction between the components of the composite process is beneficial to the separation of photogenerated electron hole pairs and is an effective way to improve the photocatalytic activity of the materials.Mg-Al-LDHs was grown vertically on the surface of Fe_3O_4 by direct coating method, and Cu element was introduced to obtain Fe_3O_4/Cu-Mg-Al-LDHs composites with good visible photocatalytic performance.The morphology, particle size, crystallinity, magnetic properties and elements of the samples were studied by means of X-ray diffraction, X-ray photoelectron spectroscopy, infrared spectroscopy and alternating gradient magnetometer.The photocatalytic degradation of methyl orange by single material, simple mixed sample of single material and Fe_3O_4/Cu-Mg-Al-LDHs composite was compared and analyzed.The experimental results show that Fe3O-1 / Cu-Mg-Al-LDHs composite has a good photocatalytic effect on methyl orange, and good magnetic properties are beneficial to the recovery of adsorbent.
【作者单位】：山东理工大学材料科学与工程学院;
【基金】：山东省自然科学基金(ZR2015BM022)
【分类号】：O643.36;TB33

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