Green Synthesis of Tin Dioxide Nanoparticles and its Application as Photocatalyst for Eriochrome Black T Degradation

Abstract

Tin oxide nanoparticles were synthesis successfully using Melia Azedarach seed extract and was characterized by XRD and SEM analyses. SnO₂ NPs were employed to degrade the Eriochrome Black T (EBT) dye in an aqueous solution under UV light. Moreover, the responsible surface method (RSM) was employed to investigate the effect of three parameters, including reaction time (0.5 to 4h), catalyst loading (0.05 to 0.15g), and initial pH of the dye solution (2 to 10) on the photocatalytic degradation yield as well as to optimize of EBT degradation reaction. The result demonstrated that pure tin oxide NPs were synthesized by applying this green route. Furthermore, the RSM results showed that the pH factor has the greatest effect on dye degradation. According to the optimization results, the highest photocatalytic degradation efficiency of the dye was about 94% at pH = 3.25, time = 3.6 h, and adsorbent dosage = 0.14g.