Fe2V4O13 assisted hetero-Fenton mineralization of methyl orange under UV-A light irradiation

Authors

  • Abílio José Fraga do Nascimento Sobral Department of Chemistry, University of Coimbra, Coimbra 3004-535, Portugal
  • Balu Krishnakumar Department of Chemistry, University of Coimbra, Coimbra 3004-535, Portugal
  • Ganesamoorthy Thirunarayanan Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
  • Kaliyamoorthy Gowthami Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
  • Palusamy Suppuraj Department of Chemistry, Annamalai University, Annamalainagar 608 002, Tamil Nadu, India
Abstract:

Fe2V4O13 is prepared and characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR), UV-diffuse reflectance spectroscopy (UV-DRS), high resolution scanning electron microscopy (HR-SEM) using energy dispersive X-ray spectroscopy (EDX) analysis. The hetero-Fenton catalyst can be used to mineralize Methyl Orange (MO) under UV-A light. The mineralization rate is influenced by hydrogen peroxide (H2O2) concentration, pH, and catalyst loading. The reusability of Fe2V4O13 is analyzed by five successive runs. At the maximum of 95% of degradation is observed in all five cycles. Therefore, the Fe2V4O13 catalyst is found to be reusable. The mineralization is confirmed by chemical oxygen demand (COD) measurements. Mechanism of the heterophoto-Fenton process is also proposed.Keywords: Fe2V4O13; Methyl Orange; wastewater treatment; hetero-Fenton reaction; photocatalysis

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Journal title

volume 6  issue Issue 1, pp. 1-108

pages  97- 108

publication date 2018-01-01

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