Silver nanoparticles (AgNPs): biosynthesis, characterization and biomedical application
Silver nanoparticles (AgNPs) have gained much attention for a long time due to the interesting optical and antimicrobial properties that they display. Currently, AgNPs are most known for their unique ability to amplify signals in fluorescence and Raman spectroscopies. The current study aims to descr...
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2023 |
| País: | Ecuador |
| Institución: | Universidad Yachay Tech |
| Repositorio: | Repositorio Universidad Yachay Tech |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.yachaytech.edu.ec:123456789/701 |
| Acceso en línea: | http://repositorio.yachaytech.edu.ec/handle/123456789/701 |
| Access Level: | acceso abierto |
| Palabra clave: | Biosíntesis Nanopartículas de plata Propiedades ópticas Biosynthesis Silver nanoparticles Optical properties |
| Sumario: | Silver nanoparticles (AgNPs) have gained much attention for a long time due to the interesting optical and antimicrobial properties that they display. Currently, AgNPs are most known for their unique ability to amplify signals in fluorescence and Raman spectroscopies. The current study aims to describe the biogenic synthesis and characterization of a stable solution of AgNPs using the aqueous extract of an industrial residue with no known use, Persea americana seeds. The reaction parameters such as temperature, pH, and reaction time were modified to standardize the synthesis process and, as far as possible, tune the optical properties of AgNPs. The resulting NPs were characterized with UV-vis spectroscopy and SEM microscopy, and the content of the extract was characterized with FTIR spectroscopy. It was found that the polyphenols present in the extract of P. americana participate in the synthesis and stabilization of AgNPs. The extract produced mostly spherical AgNPs, with an average size of 63 ± 25 nm and an absorption peak around 400 nm. These NPs can potentially be used for blue light filtering purposes, in the medical field, for example, to prevent blue-light overexposure diseases such as retinal damage, age-related macular degeneration (AMD), and insomnia. |
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