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Título : Synthesis of highly concentrated suspensions of silver nanoparticles by two versions of the chemical reduction method
Autor: Gakiya-Teruya, Miguel
Palomino-Marcelo, Luis
Rodriguez-Reyes, Juan Carlos F.
Fecha de publicación : 24-dic-2018
Resumen : In spite of the widespread use of the chemical reduction method to obtain silver nanoparticles, the nanoparticle yield is often low due to a required addition of small volumes of diluted metal ions to a solution containing a reducer. Higher yields can be obtained following an alternative method, in which the reducer is added to a greater volume of silver ions in the solution. In this study, protocols for both methods are detailed and compared, using characterization tools such as UV-vis spectrometry, dynamic light scattering (DLS), and zeta potential measurements. By using this alternative method, the amount of silver in the solution is three times greater, and nanoparticles with a narrower size distribution are formed (between 6 and 70 nm in size). In contrast, the regular method produces particles of 3 and 100 nm. Zeta potential measurements indicate that the nanoparticles synthesized with the alternative method will be more stable than those from the regular method.
Palabras clave : Silver nanoparticles
UV-VIS spectrometry
Dynamic light scattering
Frens method
Editorial : MDPI
URI: https://hdl.handle.net/20.500.12815/199
DOI : https://doi.org/10.3390/mps2010003
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