Application of the Response Surface Methodology for Green synthesis of silver nanoparticles using a plant extract of shallot | ||||
| Egyptian Journal of Chemistry | ||||
| Article 36, Volume 63, Issue 11, November 2020, Page 4579-4588 PDF (1.16 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/ejchem.2020.25805.2507 | ||||
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| Authors | ||||
Thi Thanh Thuy Nguyen  1; Hoang Huy Le1; Thuy Vy Truong1; Thi Phuong Thuy Doan1; Thi Thanh Tam Nguyen2; Thi My Lan Nguyen3
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| 1Nong Lam University, Ho Chi Minh City Linh Trung ward, Thu Duc district, Ho Chi Minh City, Vietnam | ||||
| 2Industrial University of Ho Chi Minh City, Vietnam | ||||
| 3University of Science - Vietnam National University, Ho Chi Minh City, Vietnam | ||||
| Abstract | ||||
| Biogenic silver nanoparticles have been green-synthesized using the aqueous extract of shallot (Allium ascalonicum) as the reducing and stabilizer agents. The UV-vis spectrum of the biosynthesized silver nanoparticles showed a characteristic surface plasmon resonance peak at 414 nm, confirming the presence of silver nanoparticles. Also, the Central Composite Design under Response Surface Methodology had been applied to optimize the effects of independent factors such as the stirring time, extract volume, silver nitrate concentration, and the stirring rate on the response value that is the maximum absorbance of biosynthesized silver nanoparticles. The results showed that all variables contributed significantly to the biosynthesis of AgNPs. The R-square value of 0.9873 of the obtained model indicated a good correlation between the predicted and the observed values. Under the optimized conditions, the biosynthesized silver nanoparticles had their crystallite nature and the mean sizes of the biosynthesized AgNPs were 17 nm based on Scherrer equation. While, DLS measured the particles sizes of the AgNPs were 49.5 nm with the polydispersity index of 0.690. The SEM image revealed that the sharp of AgNPs was in the spherical forms. The chemical nature of the synthesized AgNPs was also characterized by using FT-IR. | ||||
| Keywords | ||||
| Allium ascalonicum; biosynthesis; central composite design; green-synthesis; silver nanoparticles | ||||
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