Leaf Extract Arbitrated Biogenic Synthesis of Silver Nanospheres by a Medicinal Plant from the Western Ghats with Enhanced Antimicrobial Property

John Sherin,Swaminathan Karuthapandian,Puvanesvaran Senthil Kumar

doi:10.3390/photochem1020016

Abstract

In the present study, we report the greener, simple, cost effective, non-hazardous and ecofriendly synthesis of silver (Ag) nanoparticles from Alstonia scholaris (L.) R. Br. for the first time. The synthesis of silver nanoparticles using the leaf stock acted as a reducing as well as the capping agent simultaneously. The bio-reduced silver nanoparticles were characterized using ultra violet-visible spectroscopy (UV) exhibiting blue shift absorption peak in the region 440 nm. The newly synthesized Ag NPs were sphere-like in structure and grew well with a crystalline size of 16.57 nm. The Fourier transform infrared (FT-IR) analysis identifies the biomolecules which are involved during the synthesis process. The synthesized nanocatalyst served as a good catalyst for degrading methyl orange dye under solar light irradiation and was monitored spectrophotometrically. Furthermore, the antimicrobial potential of Ag NPs was evaluated an could competently inhibit different pathogenic organisms, including bacteria and fungi. Additionally, the efficiency of the silver nanoparticles was tested against the photocatalytic degradation of methyl orange dye pollutant. Different operational parameters such as catalyst weight dosage, dye concentration and different pH were optimized. The pollutants were degraded within 35 min. The present research work opens a pathway to synthesize nanomaterial by applying the principles of green chemistry.

Highlights

Accepted: 1 September 2021To protect our inclusive environment, research workers compensated much interest in green nanotechnology and synthesis of nanomaterials using greener methods
In the various developing fields of green nanotechnology research, the plant products achieved an extensive range of applications in the field such as catalysis, sensors, solar cells and medicinal fields [1,2,3,4]
Ag NPs have a proliferating function in the medical field, because of their antimicrobial characteristic which is helpful in eliminating viruses, bacteria and fungus to prevent the wide spread of diseases

Summary

Introduction

Accepted: 1 September 2021To protect our inclusive environment, research workers compensated much interest in green nanotechnology and synthesis of nanomaterials using greener methods. In the various developing fields of green nanotechnology research, the plant products achieved an extensive range of applications in the field such as catalysis, sensors, solar cells and medicinal fields [1,2,3,4]. Nanoparticles are synthesized by different plants using active fields of interdisciplinary investigation (nanobiotechnology). Synthesizing nanoparticles was found compatible with environmentally benevolent materials rather than chemicals, under various conditions. Silver, platinum with well-defined shape, size and composition have applications in the areas of optics, electronics, sensors, catalysis, environmental, biotechnology, antibacterial activity, medicines, electronics, biology and biomedical applications, material science, physics, environmental remediation fields possessing various properties [5,6,7,8]. Ag NPs found use in the day-to-day applications due Published: 6 September 2021

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Results

Conclusion