Green Synthesis of Cobalt Oxide Nanoparticles Using Delonix regia Leaf


Year : 2025 | Volume : 16 | Issue : 01 | Page : 30-38
    By

    Vandana Vishwakarma,

  • Gourav Mishra,

  1. Student, Department of Biotechnology, Meerut Institute of Engineering and Technology (MIET), Meerut, Uttar Pradesh, India
  2. Assistant Professor, Department of Biotechnology, Meerut Institute of Engineering and Technology (MIET), Meerut, Uttar Pradesh, India

Abstract

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Green synthesis of nanoparticles offers a sustainable and eco-friendly alternative to conventional methods. This study explores the biosynthesis of cobalt oxide nanoparticles (Co3O4 NPs) using Delonix regia leaf extract as a reducing and stabilizing agent. The synthesized Co3O4 NPs were characterized by UV-visible spectroscopy, Fourier transform infrared (FTIR), X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM), confirming their uniform spherical morphology with an average size of 20 nm. The green synthesis method was efficient, cost-effective, and devoid of harmful chemicals, highlighting its potential for large-scale industrial applications. These nanoparticles demonstrated significant antibacterial activity against Escherichia coli, suggesting potential biomedical applications. The advanced technology for synthesizing NPs utilizes natural resources in an environmentally friendly manner. Additionally, green synthesis is preferred to chemical and physical synthesis because it takes less time and effort. The green synthesis of Co3O4 NPs has risen due to recently its physicochemical properties. In this study, many functional groups present in Delonix regia leaf extracts are used to stabilize the synthesis of Co3O4 NPs. The biosynthesized Co3O4 NPs were investigated using UV-visible spectroscopy analysis with highest peak at 436 nm. The XRD analysis showed various peaks ranging from 31.42° to 65.28°, and the highest intensity showed at 36.86°. The particle size ranged from 15 to 35 nm and confirmed that the average particle size is 20 nm. SEM images of green synthesized Delonix regia Co3O4 NPs showed agglomerated and uniform spherical particles. The anti-bacterial activity of green synthesized Delonix regia Co3O4 NPs was evaluated against Gram-negative Escherichia coli.

Keywords: Green synthesis, cobalt oxide nanoparticles, Delonix regia, antibacterial activity, sustainable nanotechnology, biosynthesis

[This article belongs to Journal of Modern Chemistry & Chemical Technology (jomcct)]

How to cite this article:
Vandana Vishwakarma, Gourav Mishra. Green Synthesis of Cobalt Oxide Nanoparticles Using Delonix regia Leaf. Journal of Modern Chemistry & Chemical Technology. 2025; 16(01):30-38.
How to cite this URL:
Vandana Vishwakarma, Gourav Mishra. Green Synthesis of Cobalt Oxide Nanoparticles Using Delonix regia Leaf. Journal of Modern Chemistry & Chemical Technology. 2025; 16(01):30-38. Available from: https://journals.stmjournals.com/jomcct/article=2025/view=0


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Regular Issue Subscription Book Review
Volume 16
Issue 01
Received 30/12/2024
Accepted 03/01/2025
Published 14/01/2025
144

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