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M. Raaja Rajeshwari,Asad Syed,Ali H. Bahkali,Abdallah M. Elgorban,M. Kalil Rahiman,Rajender S. Varma,S. Sudheer Khan 한국공업화학회 2022 Journal of Industrial and Engineering Chemistry Vol.115 No.-
In this work, rGO-based ternary dual Z-scheme heterojunction (rGO/CuFe2O4/CdS/Bi2S3 QDs) was formulatedfor the effective photo-Fenton assisted photocatalytic degradation of a b-blocker, atenolol. The catalystwas synthesised via a simple co-precipitation/hydrothermal method and was characterized usingXRD, XPS, FT-IR, SEM, TEM, PL, EIS, ESR, Raman and DRS. It exhibited about 76.5% degradation of atenololin 360 min under visible light irradiation with a rate constant of 0.004 min1 wherein the mechanism ofenhanced activity was attributed to the formation of OH, h+ and photo-Fenton reaction; a possible mechanismwas drafted. The intermediates were determined using GC–MS analysis delineating a plausibledegradation pathway, the mineralization of atenolol being confirmed by TOC analysis. The catalyst wasreusable and highly stable up to six cycles of degradation, as affirmed via XRD and XPS analysis. Further, the toxicity of the catalyst has been studied using the root cells of Allium cepa, and the degradedproduct and intermediates were assessed deploying ECOSAR software. Thus, the proposed work haspotential which can be implemented in future for the large-scale purification of wastewater.