Sustainable solutions for clean water: Green synthesized Cu-Ag-Bimetallic nanoparticles based nano catalyst

Central Image/Representation: Illustrate the Cu-Ag-Bimetallic Nanoparticles (Cu-Ag-BMNPs). Potentially show the leaf extract (Azadirachta indica) as part of the synthesis. Photocatalytic Process: Include a representation of the photocatalytic process, perhaps with the MB dye and the nanoparticles interacting under visible light. Key Percentage: Highlight the 85% removal rate of MB dye achieved by Cu-Ag-BMNPs. Biogenic Synthesis: Visualize the one-step biogenic synthesis approach. Future Research Directions: Graphics indicating optimization of concentration gradients), exploring mechanisms of reaction pathways), toxicity assessments, and real-world performance. Environmental Impact: Images representing water purification and environmental remediation, such as water droplets, clean water, and a green environment. [Display omitted] •Successful synthesis of environmentally friendly Cu-Ag-Bimetallic Nanoparticles (Cu-Ag-BMNPs) using Argyreia Nervosa (AN) leaf extract.•Remarkable photocatalytic prowess demonstrated by Cu-Ag-BMNPs, achieving an 85% removal rate of Methylene Blue (MB) dye under visible light.•Utilization of a one-step biogenic approach in the production of Cu-Ag-BMNPs, showcasing their potential for efficient dye degradation.•Calculated an optical band gap of 3.6 eV for Cu-Ag-BMNPs composite catalyst.•Assessed the rate constant governing the degradation of MB dye by Cu-Ag-BMNPs, employing the pseudo-first-order kinetics model.•Future research directions include optimizing catalyst and dye concentrations, exploring photocatalytic mechanisms, conducting toxicity assessments, and evaluating real-world performance. The green synthesis of copper (Cu)-silver (Ag) bimetallic nanoparticles (Cu-Ag BMNPs) using Argyreia nervosa (AN) plant leaf extract as a dual reducing and stabilizing agent is an eco-friendly and sustainable method with significant potential for diverse photo-catalytic applications. This study explores the photo-catalytic activity of biosynthesized Cu-Ag-BMNPs employing methylene blue (MB) dye under visible light. FTIR analysis reveals bio-functional groups and chemical bands, while SEM and XRD analyses provide morphological and structural details. UV–Vis spectroscopy indicates absorption peaks at 300–350 nm for CuNPs, 350–550 nm for AgNPs, and 400–550 nm for Cu-Ag-BMNPs, with an optical band gap of 3.6 eV. The results demonstrate an 85% dye degradation rate, underscoring the efficiency of Cu-Ag-BMNPs as photo-catalysts for environmentally