Enhancement of the stability of silver nanoparticles synthesized using aqueous extract of Diospyros discolor Willd. leaves using polyvinyl alcohol
| Autor: | H K Ardani, A. Harmoko, Vivi Fauzia, Windri Handayani, Cuk Imawan, Dede Djuhana |
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| Rok vydání: | 2017 |
| Předmět: |
Chromatography
Materials science Morphology (linguistics) biology 010401 analytical chemistry 02 engineering and technology Diospyros 021001 nanoscience & nanotechnology biology.organism_classification 01 natural sciences Polyvinyl alcohol Silver nanoparticle 0104 chemical sciences chemistry.chemical_compound Colloid Ultraviolet visible spectroscopy chemistry Chemical engineering Transmission electron microscopy Particle-size distribution 0210 nano-technology |
| Zdroj: | IOP Conference Series: Materials Science and Engineering. 188:012056 |
| ISSN: | 1757-899X 1757-8981 |
| DOI: | 10.1088/1757-899x/188/1/012056 |
| Popis: | Biosynthesis of silver nanoparticles is recently attracting considerable attention because of it reduces the environmental impact and already used in numerous applications. However, the disadvantages such as easy aggregation and instability properties, prevent its' application. In this papers, biosynthesis of silver nanoparticles using aqueous extract of Diospyros discolor Willd. leaves have been prepared. The effect of biosynthesis variables, like ratio of reactants and reduction time on the particle size distribution, stability, and morphology of the silver nanoparticles were investigated. The resulted silver nanoparticles were characterized using UV spectroscopy, Transmission Electron Microscopy, and Particles Size Analyzer. Polyvinyl alcohol (PVA) was used to enhance the stability of the silver nanoparticles. Silver nanoparticles modification with 1% PVA concentration has produced a better characteristic of particle size distribution compared to the original silver nanoparticles, from highly polydisperse into moderately disperse. The results of the Zetta potential measurement also confirmed the increase stability of cluster distribution in the colloidal Ag/PVA compared to the original Ag. |
| Databáze: | OpenAIRE |
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