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A very few catalysts have been developed for heterogeneous catalytic degradation of Eosin Y and Chromotrope 2R dyes (Acid Red 29) till now. The present study offers complete outlook of recyclable nanocomposite Au(Salen)@CC for catalytic degradation of hazardous water pollutant dyes such as, Eosin Y and Chromotrope 2R using mild reaction conditions. New gold Salen complex doped carbon nanocomposite Au(Salen)@CC was developed by easy methodology using nano carbon cage (CC) prepared from low-priced Pyrolysis fuel oil (PFO) residue based Pitch. The UV-Vis adsorption spectroscopy and Gas chromatography mass spectroscopy results of Eosin Y and Chromotrope-2R dyes indicated complete degradation into acidic compounds which can be further mineralized to CO2 and H2O under mild reaction conditions. The heterogeneous catalyst recycled and reused successfully for four repeated experiments without loss in its adequate performance. This new sustainable and green catalyst delivered important decomposition activity compared to accessible reports and it can be further utilized for new multifunctional applications such as, radiopharmaceutical activities, heterogeneous catalysis and chiral resolution.