Investigation of structural properties and antibacterial activity of AgO nanoparticle extract from Solanum nigrum/Mentha leaf extracts by green synthesis method

Author:

Mohanaparameswari Subramanian1,Balachandramohan Manavalan1,Sasikumar Ponnusamy2,Rajeevgandhi Chinnaiyan2,Vimalan Mark2,Pugazhendhi Sanmugam2,Ganesh Kumar Krishnamurthy2,Albukhaty Salim3,Sulaiman Ghassan M.4,Abomughaid Mosleh M.5,Abu-Alghayth Mohammed6

Affiliation:

1. Department of Physics, Erode Arts and Science College (Autonomous) , Erode-638009 , Tamilnadu , India

2. Department of Physics, Saveetha School of Engineering, SIMATS , Thandalam-602 105 , Chennai , India

3. Department of Chemistry, College of Science, University of Misan , Maysan 62001 , Iraq

4. Division of Biotechnology, Department of Applied Sciences, University of Technology , Baghdad 10066 , Iraq

5. Department of Medical Laboratory Sciences, College of Applied Medical Sciences, University of Bisha , Al Nakhil, 255 , Bisha 67714 , Saudi Arabia

6. Department of Clinical Laboratory Sciences, Faculty of Applied Medical Sciences, University of Bisha, 255, Al Nakhil , Bisha 67714 , Saudi Arabia

Abstract

Abstract Solanum nigrum and Mentha leaf extracts were used as reducing and stabilizing reagents in the green synthesis of silver oxide nanoparticles (AgO NPs), and their antibacterial efficacy was subsequently evaluated. The structure and morphology of AgO NPs were evaluated using X-ray diffraction and filed emission scanning electron microscope. High-resolution transmission electron microscopy images were used to analyze the characteristics of certain particles with clearly discernible atomic structures. The functional group and elemental composition of AgO NPs were investigated using fourier transform infrared spectroscopy and energy dispersive X-ray spectroscopy. Ultraviolet–visible spectroscopy was used to determine the energy band gap (E g) of the sample. The dielectric constant of both samples was found to be inversely proportional to frequency, whereas the dielectric loss was found to be directly proportional to temperature but directly proportional to frequency. This suggests that the space charge has an effect on the mechanism of charge transfer as well as polarizability. AC conductivity rises and is inversely proportional to temperature increases. AgO NPs had a size range of around 56 nm and were mostly spherical. The antibacterial potential of the synthesized AgO NPs using both extracts was compared by the well-diffusion method. AgO NPs at 50–100 µg·mL−1 concentration significantly inhibited the bacterial growth of Bacillus cereus, Staphylococcus aureus, Escherichia coli, and Klebsiella pneumonia.

Publisher

Walter de Gruyter GmbH

Subject

Health, Toxicology and Mutagenesis,Industrial and Manufacturing Engineering,Fuel Technology,Renewable Energy, Sustainability and the Environment,General Chemical Engineering,Environmental Chemistry

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