The impact of alkaline earth oxides on Bi2O3 and their catalytic activities in photodegradation of Bisphenol A

Abstract

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 2 O 3 nanoparticles on the photocatalytic degradation of bisphenol A were investigated. SrO-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, FT-IR, PL and SEM techniques. The photocatalytic activities of catalyts 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 2 O 3 .

Enhanced adsorptive removal of indigo carmine dye by bismuth oxide doped MgO based adsorbents from aqueous solution: equilibrium, kinetic and computational studies

“…The obtained powder was dried in an oven at 80 °C for 2.0 h and calcined at 450 °C for two hours. 33 The other percentages by weight (0, 5, and 10%) were prepared similarly. The as-fabricated Bi 2 O 3 doped MgO nanoparticles with different proportions of Bi 2 O 3 (0, 2.5, 5, and 10%) were symbolized as MgOBi0, MgOBi1, MgOBi2, and MgOBi3, respectively.…”