ISSN print edition: 0366-6352 ISSN electronic edition: 1336-9075 Registr. No.: MK SR 9/7 Published monthly

Sunlight-mediated green synthesis of silver nanoparticles using Sida retusa leaf extract and assessment of its antimicrobial and catalytic activities

M. P. Sooraj, Archana S. Nair, and D. Vineetha

Advanced Molecular Materials Research Centre, Mahatma Gandhi University, Kottayam, India

E-mail: sooraj.m.p.834u@gmail.com

Received: 24 September 2019  Accepted: 30 July 2020

Abstract:

The present work reports the green synthesis of silver nanoparticles (AgNPs) using the leaf extract of Sida retusa. The extract acts both as the stabilizing and the reducing agent. This is a simple, cost-effective, stable for long time and reproducible aqueous synthesis method of silver nanoparticles. UV–Vis absorption spectrum, FT-IR, PXRD, EDX, SEM, TEM and AFM techniques were used for the characterization of the synthesized silver nanoparticles. The silver nanoparticles-catalyzed NaBH₄ reduction reactions of methylene blue (MB), methyl orange (MO), p-nitroaniline (p-NA), and p-nitrophenol (p-NP) were studied which showed excellent catalytic activities of nanoparticles. The antibacterial activities of the synthesized silver nanoparticles were tested for both gram-positive and gram-negative bacterial strains and they show high antibacterial activity towards each kind of bacterial strains under consideration.

Keywords: AgNPs; Green synthesis; Catalytic efficiency; Surface morphology

Full paper is available at www.springerlink.com.

DOI: 10.1007/s11696-020-01304-0

Chemical Papers 75 (1) 351–363 (2021)