欢迎访问《人工晶体学报》官方网站,今天是 2025年7月7日 星期一 分享到:

人工晶体学报 ›› 2017, Vol. 46 ›› Issue (9): 1833-1837.

• • 上一篇    下一篇

磁性LDHs复合材料的制备及可见光光催化性能研究

王卫伟;于欢;姚佳良;张爱娟   

  1. 山东理工大学材料科学与工程学院,淄博,255091
  • 出版日期:2017-09-15 发布日期:2021-01-20
  • 基金资助:
    山东省自然科学基金(ZR2015BM022)

Synthesis of LDHs Magnetic Composites and Visible-Light Photocatalytic Activity

WANG Wei-wei;YU Huan;YAO Jia-liang;ZHANG Ai-juan   

  • Online:2017-09-15 Published:2021-01-20

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Fe3O4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Fe3O4/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Fe3O4/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,Fe3O4/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.

关键词: 层状双金属氢氧化物(LDHs);磁性能;复合材料;可见光光催化

Abstract: The interaction among units favors the separation of the photogenerated electron /hole pairs, which is an effect method to improve its photocatalytic performance .Layered double hydroxides ( LDHs) sheets grew vertically on the surface of Fe 3 O4 introducing Cu , which exhibited good visible-light photocalytic property .The morphology , particle size , crystallinity , magnetic property and compositions were characterized by X-ray diffraction, scanning electron microscopic analysis , X-ray photoelectron spectroscopy , infrared spectrum and alternating gradient magnetometer .The photocalytic property of the single materials, the mixture of Fe3 O4 and Cu-Mg-Al-LDHs powders, and Fe3 O4/Cu-Mg-Al-LDHs were investigated.The experimental results show that Fe 3 O4/Cu-Mg-Al-LDHs composites exhibited better visible-light photocalytic property in the degradation of methyl orange .In addition , Fe3 O4/Cu-Mg-Al-LDHs composites can be separated by applying an appropriate magnetic field .

Key words: The interaction among units favors the separation of the photogenerated electron /hole pairs, which is an effect method to improve its photocatalytic performance .Layered double hydroxides ( LDHs) sheets grew vertically on the surface of Fe 3 O4 introducing Cu , which exhibited good visible-light photocalytic property .The morphology , particle size , crystallinity , magnetic property and compositions were characterized by X-ray diffraction, scanning electron microscopic analysis , X-ray photoelectron spectroscopy , infrared spectrum and alternating gradient magnetometer .The photocalytic property of the single materials, the mixture of Fe3 O4 and Cu-Mg-Al-LDHs powders, and Fe3 O4/Cu-Mg-Al-LDHs were investigated.The experimental results show that Fe 3 O4/Cu-Mg-Al-LDHs composites exhibited better visible-light photocalytic property in the degradation of methyl orange .In addition , Fe3 O4/Cu-Mg-Al-LDHs composites can be separated by applying an appropriate magnetic field .

中图分类号: