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SIIA Público
SISTEMA INTEGRAL DE INFORMACIÓN ACADÉMICA - PÚBLICO
Título del libro: 2017 14th International Conference On Electrical Engineering, Computing Science And Automatic Control (cce) Título del capítulo: Influence of PVP on the optical and morphological properties of silver nano particles.
Autores UNAM: JESUS ANGEL ARENAS ALATORRE;
Autores externos: Idioma: Año de publicación: 2017Palabras clave:
Silver nanoparticles; Polyol method; Optical and morphological properties
Resumen:
This paper focuses on the influence of PVP concentration on physical
properties of the silver nanoparticles (AgNps). AgNps were synthesized
by polyol method in the presence of Polyvinylpyrrolidone (PVP) acting as
a stabilizing agent in a molar relation of AgNO3: PVP = 1:1, 1:1.5 and
1:2. The optical and morphological characterizations of synthesized
AgNps were performed using ultra violet visible spectroscopy (Uv-vis)
and scanning electron microscopy (SEM) characterization techniques.
Uv-vis spectra show a right displacement in the wavelength from 413 to
418 nm in the absorption bands with relation to the increment in the PVP
concentration, which is corroborated to the increase in the AgNps size.
SEM analysis results are in good agreement with the Uv-vis analysis.
Average particle size obtained from SEM analysis increased from 17 to 29
nm with increase in the PVP concentration.
