Degradation of bisphenol-a using a sonophoto Fenton-like hybrid process over aLaFeO3perovskite catalyst and a comparison of its activity with that of a TiO2photocatalyst
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Tarih
2016
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info:eu-repo/semantics/openAccess
Özet
Oxidation of bisphenol-A (BPA) was investigated using a sonophoto Fenton-like hybrid process under visiblelight irradiation in the presence of iron-containing perovskite LaFeO3catalysts. For this purpose, rstly the perovskitecatalyst (LaFeO3) was prepared by the sol-gel method and calcined at different temperatures (500, 700, and 800◦C).The prepared catalysts were characterized using XRD, SEM, FTIR, nitrogen adsorption, UV-vis DRS, and ICP/OESmeasurements.Among the prepared catalysts the catalyst that was calcined at 500◦C showed better catalytic activity withrespect to degradation and chemical oxygen demand (COD) reduction (of 21.8% and 11.2%, respectively, after 3 hof reaction duration) than the other catalysts calcined at 700◦C and 800◦C. The catalytic activity of the LaFeO3perovskite catalyst calcined at 500◦C was compared with that of a TiO2photocatalyst containing Fe and preparedby the sol-gel method. Better photocatalytic activity in terms of degradation of BPA, total organic carbon (TOC), andCOD reductions was observed with the LaFeO3perovskite catalyst under visible light.The degradation, COD, and TOC reductions after 6 h of oxidation were 34.8%, 26.9%, and 8.8% for the LaFeO3perovskite catalyst, and 33.1%, 19.7%, and 4.9% for the Fe/TiO2catalyst, respectively.
Oxidation of bisphenol-A (BPA) was investigated using a sonophoto Fenton-like hybrid process under visiblelight irradiation in the presence of iron-containing perovskite LaFeO3catalysts. For this purpose, rstly the perovskitecatalyst (LaFeO3) was prepared by the sol-gel method and calcined at different temperatures (500, 700, and 800◦C).The prepared catalysts were characterized using XRD, SEM, FTIR, nitrogen adsorption, UV-vis DRS, and ICP/OESmeasurements.Among the prepared catalysts the catalyst that was calcined at 500◦C showed better catalytic activity withrespect to degradation and chemical oxygen demand (COD) reduction (of 21.8% and 11.2%, respectively, after 3 hof reaction duration) than the other catalysts calcined at 700◦C and 800◦C. The catalytic activity of the LaFeO3perovskite catalyst calcined at 500◦C was compared with that of a TiO2photocatalyst containing Fe and preparedby the sol-gel method. Better photocatalytic activity in terms of degradation of BPA, total organic carbon (TOC), andCOD reductions was observed with the LaFeO3perovskite catalyst under visible light.The degradation, COD, and TOC reductions after 6 h of oxidation were 34.8%, 26.9%, and 8.8% for the LaFeO3perovskite catalyst, and 33.1%, 19.7%, and 4.9% for the Fe/TiO2catalyst, respectively.
Oxidation of bisphenol-A (BPA) was investigated using a sonophoto Fenton-like hybrid process under visiblelight irradiation in the presence of iron-containing perovskite LaFeO3catalysts. For this purpose, rstly the perovskitecatalyst (LaFeO3) was prepared by the sol-gel method and calcined at different temperatures (500, 700, and 800◦C).The prepared catalysts were characterized using XRD, SEM, FTIR, nitrogen adsorption, UV-vis DRS, and ICP/OESmeasurements.Among the prepared catalysts the catalyst that was calcined at 500◦C showed better catalytic activity withrespect to degradation and chemical oxygen demand (COD) reduction (of 21.8% and 11.2%, respectively, after 3 hof reaction duration) than the other catalysts calcined at 700◦C and 800◦C. The catalytic activity of the LaFeO3perovskite catalyst calcined at 500◦C was compared with that of a TiO2photocatalyst containing Fe and preparedby the sol-gel method. Better photocatalytic activity in terms of degradation of BPA, total organic carbon (TOC), andCOD reductions was observed with the LaFeO3perovskite catalyst under visible light.The degradation, COD, and TOC reductions after 6 h of oxidation were 34.8%, 26.9%, and 8.8% for the LaFeO3perovskite catalyst, and 33.1%, 19.7%, and 4.9% for the Fe/TiO2catalyst, respectively.
Açıklama
Anahtar Kelimeler
Mühendislik, Kimya
Kaynak
Turkish Journal of Chemistry
WoS Q Değeri
Scopus Q Değeri
Cilt
40
Sayı
5
