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Vol. 36 No. 2 (2024): Vol 36 Issue 2, 2024

Copyright (c) 2024 V.Porkalai, N.Lavanya, R. Nithya, R sagayaraj

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Biosynthesis, Characterization and Antimicrobial Efficacy of Zinc Oxide Nanoparticles via Plectranthus amboinicus Leaf Extract

https://doi.org/10.14233/ajchem.2024.30308
V. Porkalai
PG & Research Department of Physics, Thiru.Vi.Ka. Government Arts College (Affiliated to Bharathidasan University), Thiruvarur-610003, India
https://orcid.org/0009-0006-3156-6826
N. Lavanya
PG & Research Department of Physics, A.D.M. College for Women (Affiliated to Bharathidasan University), Nagapattinam-611001, India
https://orcid.org/0009-0002-9114-444X
R. Nithya
Department of Physics, Sanskrithi School of Engineering (Affiliated to Jawaharlal Nehru Technological University), Puttaparthi-515134, India
https://orcid.org/0000-0002-3451-3977
R. Sagayaraj
PG & Research Department of Physics, St. Joseph’s College of Arts and Science (Autonomous) (Affiliated to Annamalai University), Cuddalore-607001, India
https://orcid.org/0000-0003-3979-6846

Corresponding Author(s) : R. Sagayaraj

sagayarajnancy@gmail.com

Asian Journal of Chemistry, Vol. 36 No. 2 (2024): Vol 36 Issue 2, 2024

Abstract

This study investigates the environmental friendly synthesis of zinc oxide nanoparticles using Plectranthus amboinicus leaf extract. The X-ray diffraction (XRD) analysis confirms the presence of well-crystalline ZnO nanoparticles with a crystallite size of 42 nm. Scanning electron microscopy (SEM) reveals the size, shape and distribution of nanoparticles within the extract, indicating their impact on Plectranthus amboinicus growth. Energy dispersive X-ray (EDX) analysis confirmed the high nanoparticle purity, while FTIR spectral analysis identifies the organic compounds involved in the synthesis. UV-visible absorption spectroscopy shows a reduced bandgap energy in the green-synthesized ZnO nanoparticles. Dynamic light scattering (DLS) analysis indicates a mean particle size of 11 nm with a significant stability. These nanoparticles exhibit exceptional antimicrobial activity, especially against Gram-negative bacteria. This eco-friendly synthesis method offers cost-effectiveness, safety and sustainability, promising diverse applications in the antimicrobial therapies, food preservation and water treatment, addressing various industrial challenges.

Keywords

ZnO Nanoparticles Plectranthus amboinicus Green Synthesis Antibacterial activity
Porkalai, V., Lavanya, N., Nithya, R., & Sagayaraj, R. (2024). Biosynthesis, Characterization and Antimicrobial Efficacy of Zinc Oxide Nanoparticles via Plectranthus amboinicus Leaf Extract. Asian Journal of Chemistry, 36(2), 301–306. https://doi.org/10.14233/ajchem.2024.30308
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Author Biography

N. Lavanya, PG & Research Department of Physics, A.D.M. College for Women (Affiliated to Bharathidasan University), Nagapattinam-611001, India

PG & Research Department of Physics, A.D.M. College for Women, Affiliated to Bharathidasan University, Nagapattinam , Tamil Nadu, India

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