Abstract
Up to now, a very few catalysts have been developed approaching the heterogeneous catalytic degradation of Eosin Y and Chromotrope 2R dyes (Acid Red 29). The present study provides a complete perspective of recyclable nanocomposite Au(Salen)@CC for catalytic degradation of hazardous water pollutant dyes viz., Eosin Y & 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 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 eco-friendly catalyst delivered significant degradation activity compared to existing reports and it can be further utilized for new multifunctional applications such as, radiopharmaceutical activities, heterogeneous catalysis and chiral resolution.
Highlights
Hurdles that pauses its industrialization, i.e. limited utilization of visible light, small adsorption scope for hydrophobic pollutants, high aggregation tendency and recovery of the TiO2 composite after successive catalytic cycle[11]
To expand better awareness of the possibility of this treatment, we report the development of new heterogeneous catalyst of Au(III) Salen complex onto carbon cage prepared from pyrolysis fuel oil based Pitch residue using a new and eco-friendly approach for the catalytic degradation of Eosin Y and Chromotrope 2R dyes
The organic-inorganic hybrid nanocomposite materials carbon cage (CC), CCO, CCONa and Au(Salen)@CC were synthesized by simple template method using nanosilicaball (NSB) followed by air oxidation and NaOH treatment and easy deposition of gold Salen complex on hierarchical CC, respectively (Fig. 1)
Summary
Hurdles that pauses its industrialization, i.e. limited utilization of visible light, small adsorption scope for hydrophobic pollutants, high aggregation tendency and recovery of the TiO2 composite after successive catalytic cycle[11]. Gold Salen complex doped carbon nanocomposite Au(Salen)@CC has promise for the degradation of dyes under mild conditions (Eosin Y: room temperature (25 °C); Chromotrope 2R: 50 °C and atmospheric pressure) using environmentally friendly oxidant (H2O2) for Chromotrope 2R and reductant NaBH4 for Eosin Y. This sustainable catalyst has immense prospective for the application of cleaning organic dye polluted water and it can be further utilized for new multifunctional applications as well
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