Wednesday , 21 October 2020

Synthesis and characterization of Silver nanoparticles using Mentha arvensis and their Photocatalytic degradation and antimicrobial activities

Radha Krishna Ghandham1, 2, Shivakrishna Pabba2, Syama Sundar Bethanabhatla1*
1Department of Chemistry, Acharya Nagarjuna University, Nagarjuna Nagar, Guntur-522510, Andhra Pradesh, India.
2Lavin Laboratories, #502, 5th floor, Windsor plaza, Nallakunta main Road, Beside vegetable market, Hyderabad-500044, Telangana, India.

Plant assisted synthesis of silver nanoparticles (Ag Nps) is designed as ideal approach in the green synthesis. In this protocol, we report a rapid and eco-friendly green synthesis of Ag Nps by using a plant extract of Mentha arvensis. The colour change from test solution light yellow to dark yellow showing the development of silver nanoparticles (MALE-Ag) and conformed by characterization of MALE-Ag Nps by UV-Vis spectroscopy, Fourier Transform Infrared Spectroscopy (FTIR) analysis, High-resolution of scanning electron microscopy. The synthesized MALE-Ag Nps were evaluated for photocatlaytic dye degradation, antimicrobial activity against bacterial strains and antimicrobial cotton fabrics loaded with Ag Nps. Further, the prepared Ag Nps exhibited good photocatalytic efficiency in UV light.  Furthermore, the MALE-Ag Nps exhibited good potential antimicrobial activities against selected strains P. aerouginosa, S. aureus, E. aerogenes, E. coli. The E. aerogenes showed highest (33 mm) zone of inhibition at 100 µg/mL concentration followed by other strains and the fungi A. niger  showed 29 mm zone of inhibition. The antimicrobial activity of cotton fabrics loaded with Ag Nps against gram negative P. aerouginosa. The results suggest that good antimicrobial activity by the unification of 5g MALE on cotton fabrics. Finally it can be concluded that Ag Nps from Mentha arvensis leaf extract showed good photocatalytic dye degradation and potential antimicrobial activities in medical and infection prevention applications.
Keywords: Silver nanoparticles, Mentha arvenis, photocatalytic dye degradation, antimicrobial activities, wound dressing.

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