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In the present study, green synthesis of silver nanoparticles (AgNPs) were prepared by using Acalypha indica (AI) plant aqueous extract, which is used as a reducing and capping agent. The surface plasma resonance of AI-AgNPs was obtained at 436 nm by the ultraviolet–visible (UV–Vis) spectrum, which confirmed the formation of AI-AgNPs. Fourier transform infrared (FTIR) spectrometer studies revealed that phenolic and carbonyl groups are involved in the reduction of Ag+ to Ag. The transmission electron microscope (TEM) micrograph reveals that the size of green synthesized AI-AgNPs was obtained in the range of 18.7 with spherical morphology. The negative zeta potential of –16.1 mV of AI-AgNPs indicates the surface charge of the AI-AgNPs as negative the colloidal formulation is moderately stable. The current investigation additionally encompasses the demonstration of the potent antimicrobial efficacy of AI-AgNPs against Escherichia coli, Salmonella typhi, Staphylococcus aureus, and Streptococcus pyogenes. Furthermore, the study involves subjecting the green synthesized AI-AgNPs to assessments of antioxidant activity using, NO, and H2O2 methodologies, anti-cancer studies, DNA binding studies, and photocatalytic dye degradation.


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Green Synthesis of Silver Nanoparticles by Acalypha indica Plant Extract and Their Approach towards Multifunctional Applications

Show Author's information Vijayalakshmi Sakaray1( )Y. Subba Rao2( )N. Venkatasubba Naidu1( )
Deptartment of Chemistry, Sri Venkateshwara University, Tirupati, Andhra Pradesh, India
DST-PURSE Centre, Sri Venkateswara University, Tirupati, Andhra Pradesh, India

Abstract

In the present study, green synthesis of silver nanoparticles (AgNPs) were prepared by using Acalypha indica (AI) plant aqueous extract, which is used as a reducing and capping agent. The surface plasma resonance of AI-AgNPs was obtained at 436 nm by the ultraviolet–visible (UV–Vis) spectrum, which confirmed the formation of AI-AgNPs. Fourier transform infrared (FTIR) spectrometer studies revealed that phenolic and carbonyl groups are involved in the reduction of Ag+ to Ag. The transmission electron microscope (TEM) micrograph reveals that the size of green synthesized AI-AgNPs was obtained in the range of 18.7 with spherical morphology. The negative zeta potential of –16.1 mV of AI-AgNPs indicates the surface charge of the AI-AgNPs as negative the colloidal formulation is moderately stable. The current investigation additionally encompasses the demonstration of the potent antimicrobial efficacy of AI-AgNPs against Escherichia coli, Salmonella typhi, Staphylococcus aureus, and Streptococcus pyogenes. Furthermore, the study involves subjecting the green synthesized AI-AgNPs to assessments of antioxidant activity using, NO, and H2O2 methodologies, anti-cancer studies, DNA binding studies, and photocatalytic dye degradation.

Keywords: green synthesis, Fourier transform infrared (FTIR), scanning electron microscopy (SEM)-energy-dispersive X-ray (EDX), TEM-selected area electron diffraction (SAED) and biomedical and catalytic applications.

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Publication history

Received: 25 November 2023
Revised: 27 December 2023
Accepted: 29 December 2023
Published: 07 March 2024

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© The Author(s) 2024.

Acknowledgements

Acknowledgements

The author Vijayalakshmi Sakaray, Prof. N. Venkatasubba Naidu, and Y, Subba Rao are grateful to DST-PURSE Centre, S.V. University, Tirupati for providing the facilities to carry out the research.

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