Synthesis of coal fly ash supported MnO<sub>2</sub> for the enhanced degradation of Acid Red 73 in the presence of peroxymonosulfate

  • Xiaoman Li (181664)
  • Longsheng Yi (6725210)
  • Qinglin Zhu (6725213)
  • Lihua Zhao (566464)
  • Yuanhong Xu (346563)
  • Miao Liu (148274)
  • Tao Liu (10785)
  • Qian Wu (209382)
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Publication date
May 2019

Abstract

In this study, coal fly ash supported MnO2 (CFA@MnO2) was synthesized as heterocatalyst for the activation of peroxymonosulfate to degrade Acid Red 73 (AR73). The synthesized catalyst was characterized by X-Ray Fluorescence Spectrometer (XRF), X-ray powder diffraction (XRD), Scanning electron microscope (SEM), X-ray photoelectron spectroscopy (XPS) and Brunauer–Emmett–Teller (BET). The composite of CFA@MnO2 possesses a large surface area of 74.59 m2/g. In the catalytic experiment, CFA@MnO2 exhibits excellent catalytic performance with 99.13% AR73 removed within 40 min with a high kinetic rate constant of 0.124 min−1, 5.49 times higher than that of pure MnO2. The operating parameters of CFA@MnO2-based fenton catalytic system were discussed, ...

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