Novel magnetically separable Ag3PO4/MnFe2O4 nanocomposite and its high photocatalytic degradation performance for organic dyes under solar-light irradiation

Novel magnetically separable Ag3PO4/MnFe2O4 nanocomposite and its high photocatalytic degradation... Novel magnetically separable Ag3PO4/MnFe2O4 nanocomposite with 30wt% MnFe2O4 was synthesized for the first time by a facile hydrothermal route and the composition and microstructure of the nanocomposite was fully characterized. The photocatalytic activity of Ag3PO4/MnFe2O4 nanocomposite was evaluated in the degradation of methylene blue (MB) and Rhodamine B (RhB) dyes under natural solar-light irradiation with an average light intensity of ~ 185mWcm−2. The results displayed that the degradation efficiency of the Ag3PO4/MnFe2O4 nanocomposite was 98% for methylene blue (MB) and 100% for Rhodamine B (RhB) in 82min. The photocatalytic activity of Ag3PO4/CoFe2O4 was almost 1.5 and 3 times as high as those of the pure Ag3PO4 and CoFe2O4, respectively. The remarkably enhanced photocatalytic performance of Ag3PO4/MnFe2O4 nanocomposite compared with the individual Ag3PO4 and MnFe2O4 was ascribed to its higher specific surface area and the existence of a synergic effect between Ag3PO4 and MnFe2O4 that resulted in efficient separation of electron–hole pairs. Trapping experiments indicated that the photodegradation of dyes was mainly achieved by superoxide radicals (•O2-) attack in Ag3PO4/MnFe2O4 suspension. Furthermore, the possible mechanism of excellent solar-light photoactivity activity of the Ag3PO4/MnFe2O4 nanocomposite was proposed based on the experimental results. Due to the existence of the magnetic MnFe2O4 nanoparticles, the Ag3PO4/MnFe2O4 nanocomposite could be magnetically separated from the reaction mixture by a usual magnet with an intensity of 0.1T (= 1kOe) and reused without any change in structure. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Solar Energy Materials and Solar Cells Elsevier

Novel magnetically separable Ag3PO4/MnFe2O4 nanocomposite and its high photocatalytic degradation performance for organic dyes under solar-light irradiation

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Publisher
Elsevier
Copyright
Copyright © 2018 Elsevier B.V.
ISSN
0927-0248
D.O.I.
10.1016/j.solmat.2018.01.026
Publisher site
See Article on Publisher Site

Abstract

Novel magnetically separable Ag3PO4/MnFe2O4 nanocomposite with 30wt% MnFe2O4 was synthesized for the first time by a facile hydrothermal route and the composition and microstructure of the nanocomposite was fully characterized. The photocatalytic activity of Ag3PO4/MnFe2O4 nanocomposite was evaluated in the degradation of methylene blue (MB) and Rhodamine B (RhB) dyes under natural solar-light irradiation with an average light intensity of ~ 185mWcm−2. The results displayed that the degradation efficiency of the Ag3PO4/MnFe2O4 nanocomposite was 98% for methylene blue (MB) and 100% for Rhodamine B (RhB) in 82min. The photocatalytic activity of Ag3PO4/CoFe2O4 was almost 1.5 and 3 times as high as those of the pure Ag3PO4 and CoFe2O4, respectively. The remarkably enhanced photocatalytic performance of Ag3PO4/MnFe2O4 nanocomposite compared with the individual Ag3PO4 and MnFe2O4 was ascribed to its higher specific surface area and the existence of a synergic effect between Ag3PO4 and MnFe2O4 that resulted in efficient separation of electron–hole pairs. Trapping experiments indicated that the photodegradation of dyes was mainly achieved by superoxide radicals (•O2-) attack in Ag3PO4/MnFe2O4 suspension. Furthermore, the possible mechanism of excellent solar-light photoactivity activity of the Ag3PO4/MnFe2O4 nanocomposite was proposed based on the experimental results. Due to the existence of the magnetic MnFe2O4 nanoparticles, the Ag3PO4/MnFe2O4 nanocomposite could be magnetically separated from the reaction mixture by a usual magnet with an intensity of 0.1T (= 1kOe) and reused without any change in structure.

Journal

Solar Energy Materials and Solar CellsElsevier

Published: May 1, 2018

References

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