Enhanced photo-degradation of organic contaminants on Ag3VO4/covalent organic frameworks under UV light: Mechanism analysis

In this study, binary S-scheme heterojunctions (Ag3VO4/SNW-1) with a covalent organic framework SNW-1 were synthesized using a cost-effective deposition-precipitation method. Comprehensive material characterization was conducted, including XRD, FT-IR, TGA, SEM-EDS, UV-vis, and PL analyses. The photocatalytic activity of Ag3VO4/SNW-1 was evaluated using NR dye as model pollutant. Results revealed superior performance, with a maximum NR degradation rate of 94% under optimized conditions. The binary system not only enhanced photocatalytic efficiency but also improved stability. Further investigations included free radical scavenging tests, EPR measurements, and identification of reactive active sites of NR. Reactive radicals, including & sdot;O2- , e-, & sdot;OH, and h+, were found to enhance the photocatalytic reaction. Economic analysis showed a 34.82% rate of return on investment (ROI) and a 36.27% break-even point (BEP), affirming the commercial potential of the binary nanocomposites. In summary, this study introduces a cost-effective, reproducible, and environmentally friendly binary nanocomposites with exceptional water pollutant removal performance, showcasing promising prospects for practical applications.