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All Journal International Journal of Acta Material
C. Baskar
Department of Chemistry, Central University of Kashmir, Tulmulla, Ganderbal, Jammu and Kashmir, 181143, India.
Chemistry Materials Science & Nanotechnology Physics

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The Latest Green Synthesis of Silver Nanoparticles Using Cocoa Fruit Peel Extract (Theobroma cacao L.) as a Bioreductant S. Kasim; W. Riskiyani; A.N. Zahra; I W. Sutapa; A. Kamari; C. Baskar
International Journal of Acta Material Vol. 2 No. 1 (2025): August 2025
Publisher : Faculty Mathematics and Natural Sciences, Halu Oleo University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62749/ijactmat.v2i1.17

Abstract

Cocoa fruit peel contains a variety of phytochemicals, including tannins, flavonoids, alkaloids, terpenoids, and saponins, which are anticipated to act as reducing agents. The green synthesis method employs methanol as a solvent to extract organic compounds from cocoa fruit peel, which serve as bio-reductants. This study aims to synthesize silver nanoparticles utilizing cocoa fruit peel extract as a bio-reductant. It involved the preparation of silver nitrate (AgNO₃) solutions at varying concentrations of 0.5 mM, 1 mM, and 1.5 mM. Characterization of the nanoparticles was conducted using a UV-Vis spectrophotometer and a Particle Size Analyzer (PSA). The study observed the formation of silver nanoparticle colloids after 30 minutes of stirring, as evidenced by a color change in the colloid to brown. UV-Vis spectrophotometer analysis revealed a maximum wavelength of 461 nm with an absorbance value of 2.032. Notably, as the concentration of silver nitrate (AgNO₃) increased, the absorbance value correspondingly increased. The PSA results indicated that the silver nanoparticles had an average size of 96.08 nm.
Co-Authors A. Kamari A.N. Zahra I W. Sutapa S. Kasim W. Riskiyani