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Facile method to synthesize magnetic iron oxides/TiO2 hybrid nanoparticles and their photodegradation application of methylene blue
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  • 作者：Wei Wu (1) (2) (3)
    Xiangheng Xiao (1) (2)
    Shaofeng Zhang (1) (2)
    Feng Ren (1) (2)
    Changzhong Jiang (1) (2)
  • 关键词：magnetic iron oxide nanoparticles ; TiO2 ; hybrid structure ; photocatalyst ; methylene blue
  • 刊名：Nanoscale Research Letters
  • 出版年：2011
  • 出版时间：December 2011
  • 年：2011
  • 卷：6
  • 期：1
  • 全文大小：2033KB
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  • 作者单位：Wei Wu (1) (2) (3)
    Xiangheng Xiao (1) (2)
    Shaofeng Zhang (1) (2)
    Feng Ren (1) (2)
    Changzhong Jiang (1) (2)

    1. Key Laboratory of Artificial Micro- and Nano-structures of Ministry of Education, Wuhan University, Wuhan, 430072, People鈥檚 Republic of China
    2. Center for Electron Microscopy and School of Physics and Technology, Wuhan University, Wuhan, 430072, People鈥檚 Republic of China
    3. School of Printing and Packaging, Wuhan University, Wuhan, 430079, People鈥檚 Republic of China China
  • ISSN：1556-276X
文摘
Many methods have been reported to improving the photocatalytic efficiency of organic pollutant and their reliable applications. In this work, we propose a facile pathway to prepare three different types of magnetic iron oxides/TiO2 hybrid nanoparticles (NPs) by seed-mediated method. The hybrid NPs are composed of spindle, hollow, and ultrafine iron oxide NPs as seeds and 3-aminopropyltriethyloxysilane as linker between the magnetic cores and TiO2 layers, respectively. The composite structure and the presence of the iron oxide and titania phase have been confirmed by transmission electron microscopy, X-ray diffraction, and X-ray photoelectron spectra. The hybrid NPs show good magnetic response, which can get together under an external applied magnetic field and hence they should become promising magnetic recovery catalysts (MRCs). Photocatalytic ability examination of the magnetic hybrid NPs was carried out in methylene blue (MB) solutions illuminated under Hg light in a photochemical reactor. About 50% to 60% of MB was decomposed in 90 min in the presence of magnetic hybrid NPs. The synthesized magnetic hybrid NPs display high photocatalytic efficiency and will find recoverable potential applications in cleaning polluted water with the help of magnetic separation.

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