Highly Efficient Degradation of Organic Compounds via β-Bi₂O₃Semiconductor Under Visible Illumination

Abstract

β-Bi2O3semiconductor nanoparticles synthesized by solution combustion method. The as-synthesized sample was systematically characterized by several techniques, including PXRD, DLS, Raman spectrometry, SEM, and DRS-UV-vis spectroscopy. PXRD and Raman analyses confirmed high crystallinity and phase purity of the prepared β-Bi2O3. SEM and DLS showed the morphology and the agglomeration of β-Bi2O3nanoparticles.DRS-UV-Vis showed the enhanced visible light absorption toward the visible light range with bandgap 2.43 eV. Significantly, β-Bi2O3 nanoparticles demonstrated outstanding visible-light photocatalytic properties, revealed enhanced methylene blue (MB) dye degradation. 91% of the dye content was degraded by 30 minutes under 50W visible LED light irradiation, which could be attributed to enhanced visible light absorption and the smaller size of the synthesized nanoparticles.

Dye Degradation Comparison Studies of Methylene Blue and Methyl Orange by Synthesized Zn Doped Fibrous Wollastonite.

“…To create an equilibrium between photocatalysts and the dye, the reaction solution was agitated in the dark for 30 minutes. The suspension was then continuously stirred while being exposed to sunshine 25. Using a UV-Visible spectrophotometer, the concentrations of MB and MO were determined at different time intervals and calculated the percentage by equation (2).…”