Ultrasound‐assisted synthesis of FeTiO3/GO nanocomposite for photocatalytic degradation of phenol under visible light irradiation

Phenolic compounds are dangerous pollutants in industrial effluents that have caused many human and environmental problems. These compounds are resistant to decomposition conventional biological systems. Photocatalytic treatment is amongst the most efficient technique for phenol removal from aqueous media. In this study, FeTiO3/GO nanocomposite was synthesized through the ultrasound‐assisted method. Structural, morphological, and optical properties of the synthesized nanocomposite were characterized by TEM, XRD, EDS, XPS, BET, TGA, FTIR, and UV–visible techniques. Optimum conditions for phenol photocatalytic degradation were obtained in 3% of GO content, 0.75 g/L nanocomposite dosage, and pH = 8. The degradation efficiency decreased by increasing phenol concentrations and complete mineralization was observed after 240 min of irradiation in optimum conditions. The effect of scavengers indicated that superoxide and hydroxyl radicals had the main role in the photodegradation process. The hindrance effect of inorganic ions was obtained asHCO3- > Cl- > SO42− > NO3-. Our experimental results put forward the FeTiO3/GO nanocomposite as a highly stable catalyst that can successfully remove phenolic compounds from aqueous solutions. Only a 10.8% decrease was observed in phenol degradation efficiency after five cycles, showing high recyclability of the FeTiO3/GO nanocomposite. © 2020 Elsevier B.V.

Moradi M.1 , Vasseghian Y.2, 3 , Khataee A. 4, 5 , Harati M.6 , Arfaeinia H.7
Elsevier B.V.
  • 1 Research Center for Environmental Determinants of Health (RCEDH), Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
  • 2 Institute of Research and Development, Duy Tan University, Da Nang, 550000, Viet Nam
  • 3 The Faculty of Environmental and Chemical Engineering, Duy Tan University, Da Nang, 550000, Viet Nam
  • 4 Research Laboratory of Advanced Water and Wastewater Treatment Processes, Department of Applied Chemistry, Faculty of Chemistry, University of Tabriz, Tabriz, 51666-16471, Iran
  • 5 Peoples’ Friendship, University of Russia (RUDN University), 6 Miklukho-Maklaya Street, Moscow, 117198, Russian Federation
  • 6 Department of Environmental Health Engineering, School of Public Health, Iran University of Medical Sciences, Tehran, Iran
  • 7 Department of Environmental Health Engineering, School of Public Health, Bushehr University of Medical Sciences, Bushehr, Iran
FeTiO3/GO; Nanocomposite; Phenol; Photocatalytic degradation
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