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New magnetically recyclable reduced graphene oxide rGO/MFe2O4 (M= Ca, Mg)/Ag3PO4 nanocomposites with remarkably enhanced visible-light photocatalytic activity and stability

Bagherzadeh, M ; Sharif University of Technology | 2018

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  1. Type of Document: Article
  2. DOI: 10.1111/php.12968
  3. Publisher: Blackwell Publishing Inc , 2018
  4. Abstract:
  5. New magnetically separable CaFe2O4/Ag3PO4, MgFe2O4/Ag3PO4, rGO/CaFe2O4/Ag3PO4 and rGO/MgFe2O4/Ag3PO4 photocatalysts were synthesized by the hydrothermal and ion-exchange deposition method. These four types of photocatalyst were used for degradation of Methylene blue (MB), Methyl orange (MO) and 4-chlorophenol (4-CP) in aqueous solution under visible-light illumination. The optimized photocatalyst, i.e. rGO/CaFe2O4/Ag3PO4 with a mass ratio of (1:3:9) composite not only shows the highest photocatalytic performance for the degradation of MB, MO and 4-CP under visible light irradiation among the other synthesized photocatalysts but also exhibits high reusability and stability for at least five cycles. It was found that the impressive separation of electron–hole pairs as well as presence of rGO sheets which act as a high speed charge transfer were responsible for increasing photocatalytic activity over the optimized photocatalyst under visible-light irradiation. A possible mechanism for the increased photocatalytic activity of the rGO/CaFe2O4/Ag3PO4 with a mass ratio of (1:3:9) composite was discussed in detail. © 2018 The American Society of Photobiology
  6. Keywords:
  8. Source: Photochemistry and Photobiology ; Volume 94, Issue 6 , 2018 , Pages 1210-1224 ; 00318655 (ISSN)
  9. URL: https://onlinelibrary.wiley.com/doi/abs/10.1111/php.12968