Abstract
Environmental pollution and fossil fuel depletion are becoming major issues on a worldwide scale, posing serious threats to both the environment and human health. Finding effective and affordable pollution cleanup technologies as well as the alternate source of energy is very important. The present study is concerned with the synthesis of Ag nanoparticles and Ag-rGO composite employing environment affable and cost-effective green combustion method. The fuel used for the preparation of NPs was the Malus domastica juice. The synthesized materials were subjected for the characterization techniques like XRD, TEM, SEM, Raman and UV-Visible spectral studies. The synthesized nanocomposite was analyzed for photocatalytic dye degradation, electrochemical nitrate sensing, antibacterial as well as antioxidant activities. Ag-rGO degraded methylene blue dye completely by 70 min. Further, the material was subjected for recyclability test and it was efficient and stable upto 5th cycle. Effect of various parameters such as catalytic load, dye concentration and pH on efficiency of dye degradation was analyzed. Nitrite sensing studies revealed that the LOD was found to be 19.8 µg. Further, Ag-rGO exhibited antibacterial activity on Pseudomonas aeroginosa bacterial strain to a greater extent compared to all the other bacterial strains tested. The Ag-rGO nanocomposite was found to be the potent antioxidant with IC50 value of 1489 µg/mL. Therefore, this work exemplifies the easy and eco-friendly green synthetic route for the large-scale industrial production of versatile Ag-rGO nanocomposite.
Published Version
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