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Issue 11, 2017
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Facile synthesis of nano-Zn/Bi–reduced graphene oxide for enhanced photocatalytic elimination of chlorinated organic pollutants under visible light

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Abstract

A Zn/Bi mixed metal oxide (MMO) was synthesized by a simple co-precipitation method. Then Zn/Bi-MMO was hydrothermally treated with graphene oxide (GO) to obtain a Zn/Bi–RGO co-assembly. The XRD pattern confirms the formation of highly pure Zn/Bi–RGO nanoparticles. In the co-assembled Zn/Bi–RGO hybrid, GO had converted into RGO, which was evidenced by spectroscopy techniques, such as FT-IR, Raman, XPS, etc. UV-Vis DRS spectra infer that the prepared hybrid has significant absorption in the visible light region. The photocatalytic studies were conducted using 2-chlorophenol (2-CP) and 2,4-dichlorophenol (2,4-DCP) and the hybrid offered almost complete degradation of pollutants as compared to pure Zn/Bi-MMO. The enhanced photocatalytic activity of Zn/Bi–RGO hybrids is due to the homogeneous distribution of Zn/Bi-MMO over RGO sheets as well as electron transportation efficacy of the RGO sheets. The mechanism of catalysis is expected to have two key events; namely a charge transfer mechanism, which initiates the reaction, followed by an electron–hole aided radical mechanism.

Graphical abstract: Facile synthesis of nano-Zn/Bi–reduced graphene oxide for enhanced photocatalytic elimination of chlorinated organic pollutants under visible light

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Publication details

The article was received on 26 Mar 2017, accepted on 20 Apr 2017 and first published on 20 Apr 2017


Article type: Paper
DOI: 10.1039/C7NJ00996H
Citation: New J. Chem., 2017,41, 4406-4415
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    Facile synthesis of nano-Zn/Bi–reduced graphene oxide for enhanced photocatalytic elimination of chlorinated organic pollutants under visible light

    K. Goswami and R. Ananthakrishnan, New J. Chem., 2017, 41, 4406
    DOI: 10.1039/C7NJ00996H

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