Visible-light-driven activation of sodium persulfate for accelerating orange II degradation using ZnMn<sub>2</sub>O<sub>4</sub> photocatalyst

A special catalytic system was obtained by using ZnMn2O4 (ZMO) materials to activate Na2S2O8 and catalytically degrade organic dye orange II under visible light irradiation. The ZMO nanoparticles were prepared by a simple one-step method and characterized by X-ray diffraction (XRD), field emission scanning electron microscopy (FE-SEM) and ultraviolet–visible diffuse reflectance spectroscopy (UV–Vis DRS). In this study, the ZMO/Na2S2O8 system was used to degrade orange II, and the degradation rate reached 97.44% in 60 min. ZMO catalysts could be recycled for at least five times, and its degradation rate was only decreased by 1.84%. The free radicals produced during the degradation of orange II were studied by classical quenching experiments, and the different types of free radicals produced in the system were further confirmed by electron paramagnetic resonance (EPR) spectroscopy. The catalytic degradation of orange II in this system was mainly caused by the production of superoxide, sulfate and hydroxyl radicals, which achieved high degradation.

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Work Title Visible-light-driven activation of sodium persulfate for accelerating orange II degradation using ZnMn<sub>2</sub>O<sub>4</sub> photocatalyst
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Open Access
Creators
  1. Fang Zhu
  2. Jianfeng Ma
  3. Qiuyue Ji
  4. Hao Cheng
  5. Sridhar Komarneni
License In Copyright (Rights Reserved)
Work Type Article
Publisher
  1. Chemosphere
Publication Date September 1, 2021
Publisher Identifier (DOI)
  1. https://doi.org/10.1016/j.chemosphere.2021.130404
Deposited November 20, 2021

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  • Created
  • Added Revised_Manuscript_with_changes_marked.doc
  • Added Creator Fang Zhu
  • Added Creator Jianfeng Ma
  • Added Creator Qiuyue Ji
  • Added Creator Hao Cheng
  • Added Creator Sridhar Komarneni
  • Published
  • Updated
  • Updated