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MAO Weixing; MU Xiao; WU Kaiping; KANG Zhicheng; SHE Wenqiang; GONG Peijun

doi:10.11889/j.1000-3436.2014.rrj.32.010303

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更新时间：2021-12-01

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- Journal of Radiation Research and Radiation Processing Vol. 32, Issue 1, Pages: 10303-010303(2014)
- 作者机构：
  
  1. （浙江师范大学化学与生命科学学院）,金华,321004
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- DOI：10.11889/j.1000-3436.2014.rrj.32.010303
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MAO Weixing, MU Xiao, WU Kaiping, et al. [J]. Journal of Radiation Research and Radiation Processing 32(1):10303-010303(2014)
DOI：

MAO Weixing, MU Xiao, WU Kaiping, et al. [J]. Journal of Radiation Research and Radiation Processing 32(1):10303-010303(2014) DOI： 10.11889/j.1000-3436.2014.rrj.32.010303.

摘要

采用光引发丙烯酸聚合的方法对Fe3O4纳米粒子进行表面改性，制备了羧基功能化的Fe3O4/聚丙烯酸复合纳米粒子(Fe3O4/PAA)；以Fe3O4/PAA为磁核，以硫酸镉和硫代硫酸钠为原料，采用光化学方法制备Fe3O4/聚丙烯酸/CdS复合粒子(Fe3O4/PAA/CdS)，并借助红外光谱、X射线粉末衍射、透射电子显微镜、荧光光谱和振动样品磁强计对其进行表征。结果表明，核-壳结构的Fe3O4/PAA/CdS为表面粗糙的球形粒子，平均粒径为155 nm，具有发光性能和准超顺磁性。Fe3O4/PAA/CdS在有机染料罗丹明B的降解实验中显示出良好的可见光催化活性，可以借助磁铁在2 min内从溶液中完全回收。

Abstract

Poly (acrylic acid)-functionalized magnetic nanoparticles (Fe3O4/PAA) were synthesized by polymerization of acrylic acid initiated by UV light. CdS-modified Fe3O4/PAA composite particles (Fe3O4/PAA/CdS) were photochemically prepared in aqueous solution containing cadmium sulfate and sodium thiosulfate with Fe3O4/PAA as the magnetic core. The composite particles were characterized by infrared spectroscopy (IR), X-ray powder diffraction (XRD), transmission electron microscopy (TEM), photoluminescence measurement (PL), and vibrating sample magnetometer (VSM). The results show that the mean size of Fe3O4/PAA/CdS spheres with core-shell structure and rough surface is about 155 nm and the size distribution is rather wide. The composite spheres also exhibit luminescent and quasi-superparamagnetic properties. Besides, the magnetic composite spheres possess excellent activity as a recyclable photocatalyst for the degradation of Rhodamin B when exposed to visible light irradiation and can be covered by a magnet from aqueous solution within 2 min.Cited

关键词

光化学合成磁性复合粒子硫化镉光催化

Keywords

Photochemical synthesisMagnetic composite particleCdSPhotocatalysis

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DOI：10.11889/j.1000-3436.2014.rrj.32.010303

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