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The role of some metal ions in enhancement of photocatalytic activity of Fe2O3–V2O5 binary oxide

Fe2O3 -V2O5 mixed oxides were synthesized with solid-state dispersion (SSD) and coprecipitation methods. In addition, transition metal oxides such as CuO, NiO, and Co3O4 were successfully loaded on the synthesized catalyst (Fe2O3 -V2O5) using the SSD method. The composite catalysts were inspected for their photocatalytic activities in degrading 2,4-dichlorophenol under UV light enforcement. The produced samples were analyzed using X-ray diffraction, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy, diffuse reflectance spectroscopy, scanning electron microscopy, photoluminescence, and the Brunauer–Emmett– Teller method.ry oxide | Turkish Journal of Chemistry Turk J Chem 2021 45 348-361 http journals.tubitak.gov.tr chem TÜBİTAK Research Article doi 10.3906 kim-2008-57 The role of some metal ions in enhancement of photocatalytic activity of Fe2O3 V2O5 binary oxide Eda SINIRTAŞ İLKME Gülin Selda POZAN SOYLU Department of Chemical Engineering Engineering Faculty İstanbul University-Cerrahpaşa İstanbul Turkey Received 28.08.2020 Accepted Published Online 13.12.2020 Final Version 28.04.2021 Abstract Fe2O3-V2O5 mixed oxides were synthesized with solid-state dispersion SSD and coprecipitation methods. In addition transition metal oxides such as CuO NiO and Co3O4 were successfully loaded on the synthesized catalyst Fe2O3-V2O5 using the SSD method. The composite catalysts were inspected for their photocatalytic activities in degrading 2 4-dichlorophenol under UV light enforcement. The produced samples were analyzed using X-ray diffraction X-ray photoelectron spectroscopy Fourier transform infrared spectroscopy diffuse reflectance spectroscopy scanning electron microscopy photoluminescence and the Brunauer Emmett Teller method. The addition of transition metal oxides improved the photocatalytic activity of Fe2O3-V2O5 SSD . 1CuO wt Fe2O3-V2O5 exhibited the highest percentage of 2 4-dichlorophenol degradation 100 and the highest reaction rate 1.83 mg L min in 30 min. This finding is attributed to the distribution of CuO. Key words 2 4-dichlorophenol degradation photocatalyst mixed oxide UV irradiation 1. Introduction Chlorophenol compounds and their derivatives are highly toxic compounds 1 5 . Due to their adverse effects US Environmental Protection Agency EPA 6 and European regulatory authorities 7 have listed chlorophenols as significant toxins. The removal of these hazardous organic pollutants has become critical to build up eco-friendly and economic techniques. Heterogeneous photocatalytic oxidation has received substantial attention as a potentially competent method for breaking down refractory .