Facile synthesis of rGO/V2O5 nanocomposite towards the degradation of Methylene blue and Crystal violet dyes under visible light irradiation

Abstract

This study reports the synthesis and application of rGO/V2O5 heterostructured nanocomposites for wastewater treatment. The material was prepared by adjusting the concentrations of rGO and NH4VO3 to control the morphology, followed by thermal treatment to optimize photocatalytic activity. The rGO/V2O5 heterostructure exhibited remarkable performance, achieving over 86% degradation of methylene blue and 90% degradation of crystal violet within 180 min under visible-light irradiation. The photocatalytic mechanism was elucidated, highlighting the synergistic role of rGO and V2O5 in enhancing charge separation and light utilization. These findings demonstrate that rGO/V2O5 is a promising, cost-effective, and environmentally friendly photocatalyst, offering an efficient strategy for the degradation of organic pollutants in wastewater.