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A Combustion Synthesis Route for Magnetically Separable Graphene Oxide-CuFe2O4-ZnO Nanocomposite with Enhanced Solar Light-Mediated Photocatalytic Activity

Abstract

A facile one step combusion route is used for the synthesis of a magnetically separable GO-CuFe2O4-ZnO (GCZ) ternary nanocomposite photocatalyst with varying ZnO contents. Transmission electron microscope (TEM) observations show the exfoliation of graphene oxide sheets and decoration with well-dispersed ZnO and CuFe2O4 nanoparticles. The photocatalytic activity of the ternay nanocomposite was tested under solar light irradiation for the photodegradation of several dyes such as rhodamine-B (RhB), methylene blue (MB), Methyl Orange (MO) and neutral phenol. The evaluation results demonstrate that the ternary GCZ photocatalyst exhibits the best performance than GO-CuFe2O4 (GC), GO-ZnO (GZ), CuFe2O4, ZnO and CuFe2O4-ZnO (CZ) photocatalysts towards the photocatalytic degradation of the dyes. Photoelectrochemical measurements were carried out to provide deep insights into the enahnced photocatalytic activity in novel ternary nanocomposite. The improved photocatalytic activity of the ternary nanocomposite can be ascribed due to the superior light assimilation, proficient charge transfer process, synergistic effect, high surface area and superior durability of the composite. Furthermore, a possible reaction mechanism has been proposed. Our results have demonstrated that by precisely introducing GO with appropriate metal oxides, a highly efficient photocatalyst can be designed that would assimilate a wider range of the visible light. Furthermore, CuFe2O4 nanoparticles themselves have excellent magnetic properties, which are largely maintained in the GCZ composite, and can be simply separated by applying magnetic field from the suspension system.

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Publication details

The article was received on 12 Jun 2017, accepted on 08 Aug 2017 and first published on 09 Aug 2017


Article type: Paper
DOI: 10.1039/C7NJ02070H
Citation: New J. Chem., 2017, Accepted Manuscript
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    A Combustion Synthesis Route for Magnetically Separable Graphene Oxide-CuFe2O4-ZnO Nanocomposite with Enhanced Solar Light-Mediated Photocatalytic Activity

    A. Kumar, L. Rout, L. S. K. Achary, S. Mohanty and P. Dash, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ02070H

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