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Synthesis of a new magnetic nano-island titania photocatalyst and investigation of its photocatalytic activity

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Abstract

In this study, a new magnetic nano-island titania photocatalyst (Fe3O4@SiO2·TiO2) was designed and fabricated. Precipitation, sol-gel, and hydrothermal methods were utilized to synthesize the magnetite, silica shell, and titania islands, respectively. Characterization of the synthesized catalyst was carried out by XRD, EDS, FTIR, SEM, TEM, and VSM analysis. The TEM analysis revealed that the overall size of the catalyst is about 490 nm, and titania island on the magnetic core was about 50 nm. VSM analysis showed that the photocatalyst has a fantastic paramagnetic property with magnetic saturation of 52 emu g−1. Furthermore, photocatalytic activity of the synthesized catalyst was evaluated in the removal of p-nitrophenol as a typical pollutant of nitro-aromatic compounds such that its degradation and mineralization efficiency were obtained at 82 and 45% after 100 and 200 min of the process, respectively, using 100 ppm of the photocatalyst in pH = 6.5.

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Authors and Affiliations

  1. Faculty of Chemistry and Chemical Engineering, Malek Ashtar University of Technology, Tehran, Iran

    Ali Reza Zarei

  2. Space Transportation Research Institute, Iranian Space Research Center, Tehran, Iran

    Hadi Rezaei-Vahidian & Tohid Farajpour

Authors
  1. Ali Reza Zarei
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  2. Hadi Rezaei-Vahidian
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  3. Tohid Farajpour
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Correspondence to Ali Reza Zarei.

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Zarei, A.R., Rezaei-Vahidian, H. & Farajpour, T. Synthesis of a new magnetic nano-island titania photocatalyst and investigation of its photocatalytic activity. J IRAN CHEM SOC 15, 521–527 (2018). https://doi.org/10.1007/s13738-017-1252-4

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  • DOI: https://doi.org/10.1007/s13738-017-1252-4

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