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Multi-round recycling of green waste for the production of iron nanoparticles: synthesis, characterization, and prospects in remediation

Rónavári, Andrea and Balázs, Margit and Szilágyi, Árpád and Molnár, Csaba and Kotormán, Márta and Ilisz, István and Csontné Kiricsi, Mónika and Kónya, Zoltán (2023) Multi-round recycling of green waste for the production of iron nanoparticles: synthesis, characterization, and prospects in remediation. NANOSCALE RESEARCH LETTERS, 18 (1). No-8. ISSN 1931-7573

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Abstract

Due to the widespread applications of metal nanoparticles (NPs), green synthesis strategies have recently advanced, e.g., methods that utilize extracts made from different plant wastes. A particularly innovative approach to reducing large amounts of available household/agricultural green wastes is their application in nanoparticle generation. Regarding this, the aim of our work was to examine the possibility of upgrading green nanoparticle syntheses from an innovative economic and environmental point of view, namely by investigating the multiple recyclabilities of green tea (GT), coffee arabica (CA), and Virginia creeper ( Parthenocissus quinquefolia ) (VC) waste residues for iron nanoparticle (FeNPs) synthesis. The plant extracts obtained by each extraction round were analyzed individually to determine the amount of main components anticipated to be involved in NPs synthesis. The synthesized FeNPs were characterized by X-ray powder diffraction and transmission electron microscopy. The activity of the generated FeNPs in degrading chlorinated volatile organic compounds (VOC) and thus their future applicability for remediation purposes were also assessed. We have found that VC and especially GT residues could be reutilized in multiple extraction rounds; however, only the first extract of CA was suitable for FeNPs’ generation. All of the obtained FeNPs could degrade VOC with efficiencies GT1-Fe 91.0%, GT2-Fe 83.2%, GT3-Fe 68.5%; CA1-Fe 76.2%; VC1-Fe 88.2%, VC2-Fe 79.7%, respectively, where the number (as in GT3) marked the extraction round. These results indicate that the adequately selected green waste material can be reutilized in multiple rounds for nanoparticle synthesis, thus offering a clean, sustainable, straightforward alternative to chemical methods.

Item Type: Article
Uncontrolled Keywords: Iron nanoparticles, Green synthesis, Multi-round waste recycling, Sustainable nanotechnology, Renewable raw material
Subjects: Q Science / természettudomány > QD Chemistry / kémia
Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia
Q Science / természettudomány > QH Natural history / természetrajz > QH301 Biology / biológia > QH3011 Biochemistry / biokémia
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 27 Sep 2023 11:09
Last Modified: 27 Sep 2023 11:09
URI: http://real.mtak.hu/id/eprint/175300

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