Gülin Selda POZAN SOYLU, Sevgi KEMEÇ, Ümran ÜNLÜ

The impact of alkaline earth oxides on $Bi_2O_3$ and their catalytic activities inphotodegradation of Bisphenol A

The BPA into wastewater has posed a threat to environment and human health. Hence, we aimed to eliminate BPA in a short time and with a rapid degradation rate from food wastewater. Herein, the effects of different alkaline-earth oxide doped with $Bi_2O_3 nanoparticles on the photocatalytic degradation of bisphenol A were investigated. $SrO-Bi_2 O_3 , CaO-Bi_2 O_3 , and MgO-Bi_2 O_3$ binary oxides were prepared by wet-impregnation method. The structural and optical features of catalysts were clarified BET, XRD, DRS, FTIR, PL, and SEM techniques. The photocatalytic activities of catalysts were compared for different light sources. Considering that the characterization analysis and experimental results, the highly improved photocatalytic activity was mainly attributed to the effective structure of the $SrO-Bi_2 O_3$ binary oxide and the strong alkali properties in the nanocomposite. Obviously, 5wt% $SrO-Bi_2 O_3$ photocatalyst showed more excellent degradation performance and highest degradation reaction rate (0.21 mg l–1 min–1 ) within 30 min. It was observed that the photocatalytic activity improved by the additive of alkaline oxide on $Bi_2O_3

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