Green Synthesis of Plant-Extract-Mediated Metal Nanoparticles for Renewable Energy Conversion and Storage Applications

Seemab Javed; Dr. Aseel A. Kadhem; Dr. Asif Z. Warsi; Dr. Mohd Saleh AlAnsari; Nadia Jabeen; Dr. Huseyn Imanov

doi:10.29284/8agjvy82

Authors

Seemab Javed University of Engineering and Technology (UET), Lahore ORCID ID: 0009-0008-3409-6975
Dr. Aseel A. Kadhem Assistant Professor Dr. University of Al-Qadisiyah.Ministry of Education, Wasit Education Directorate. https://orcid.org/0000-0002-9168-8060
Dr. Asif Z. Warsi Institute of Business Management (IoBM), Karachi
Dr. Mohd Saleh AlAnsari Dept of Chemical Engineering, College of Engineering, University of Bahrain.
Nadia Jabeen Department of Agriculture Hazara University Mansehra ORCID ID: 0000-0001-6617-8301
Dr. Huseyn Imanov Faculty of Natural Sciences and Agriculture, Department of Chemistry, Nakhchivan State University, Nakhchivan, Azerbaijan.

DOI:

https://doi.org/10.29284/8agjvy82

Keywords:

Green Synthesis, Process-Structure-Performance, ZnO, Fe3O4, Photocatalysis, Supercapacitor, Renewable Energy.

Abstract

This study presents a quantitative study design of plant-mediated synthesis of metal oxide nanoparticles and advances past empirical studies. Zinc oxide (ZnO) and magnetite (Fe₃O₄) nanoparticles were prepared using the pomegranate peel extract with pH (8, 10, 12) and extract concentration (10, 30, 50% v/v) as the only variables. PH controlled crystallinity and the optimum concentration varied according to the application. ZnO nanoparticles prepared at 30% and pH 10 concentration attained 95 percent of photocatalytic degradation of methylene blue at a rate constant of 0.032 min-1. Fe3O4 nanoparticles prepared under similar conditions had a high specific capacitance of 285 F g-1 at 1 A g-1, 72 of the capacity retentions at 5 A g-1 and 88% retention at 5000 cycles. The natural phytochemical capping layer was used to improve performance through interfacial interactions in photocatalysis and charge transfer in supercapacitors. The present work introduces a green synthesis paradigm that is scalable, which connects sustainable chemistry to high-performance materials, which will be used in renewable energy applications.

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