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Synthesis of Copper Nanoparticles using Alternanthera Sessilis Linn Leaf Aqueous Extract and their Characterization

Hari Babu, Md. Moulana Kareem, G. Vijaya Lakshmi


The current study describes the biogenesis of Cu NPs using an aqueous extract of the leaf of Alternanthera sessilisLinn. (A.S). recently, biological synthesis of nanoparticles has gained popularity due to the fact that it is eco-friendly, simple, cost-effective, non-hazardous, and extreme conditions. The aqueous extract of Alternanthera sessilisleaf contains enoughterpenoids, carbohydrates, and flavonoids to convert metal ions into metal and thus stabilize the resulting nanoparticles. The UV-visible spectrophotometer confirmed the formation of Cu NPs with the formation of a characteristic peak at 580 nm, the XRD determined the Crystalline FCC nature of biogenic Cu NPs, the FTIR and EDX confirmed that phyto-chemicals were responsible for the reduction and stabilization of Cu NPs, and the zeta potential value (-29.1 mv) confirmed the formation of stable Cu NPs. The spherical shape and size of about 3–12 nm were revealed by TEM analysis.The biogenic Cu NPs demonstrated fascinating dose dependent antioxidant activity with EC50% as 78.83 g/ml, and highest activity as 68.36 at 100 g/ml, as well as significant Photo catalytic activity against Congo red dye, which was completely degraded after 26 minutes. Furthermore, the studies revealed that Cu NPs displayed greater antibacterial efficacy against Gram negative bacteria than Gram positive bacteria.


Antioxidant, Antibacterial, Biogenic, Catalytic, Nanoparticles, Phyto-chemicals

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