Título

Plasmonic Sensing of Aqueous-Divalent Metal Ions by Biogenic Gold Nanoparticles

Autor

LUISA ELENA SILVA DE HOYOS

Víctor Sánchez Mendieta

ALFREDO RAFAEL VILCHIS NESTOR

MIGUEL ANGEL CAMACHO LOPEZ

Jesica Trujillo Reyes

MIGUEL AVALOS BORJA

Nivel de Acceso

Acceso Abierto

Resumen o descripción

Research Article Plasmonic Sensing of Aqueous-Divalent Metal Ions by Biogenic Gold Nanoparticles

The chemical interaction between biogenic gold nanoparticles (AuNPs) and several metal (II) ions can be regarded as a practical, twofold, colorimetric, and plasmon resonance sensing method for the recognition of some divalent metal ions in aqueous solutions. The green synthesized AuNPs, using Camellia sinensis as a reducing agent, were characterized by a surface plasmon resonance (SPR) using UV-Vis spectroscopy, infrared spectroscopy, and transmission electron microscopy. The AuNP colloidal solutions obtained have a pink-reddish color with SPRs centered between 529 and 536 nm. AuNPs with spherical, triangular, and hexagonal shapes were found by TEM analyses. Despite their divergent morphologies, these AuNPs can be employed as colorimetric and plasmon resonance sensors for detection of Ca2+, Sr2+, Cu2+, and Zn2+, primarily, in aqueous solutions. Sensibility studies based on molar concentrations were also performed for these metal ions. Furthermore, solid biogenic AuNPs/cellulosic biocomposites were prepared with the aim of developing portable, fast, and dependable colorimetric sensors; nevertheless, these biocomposites resulted to be good adsorbent materials of metal ions.

Editor

Journal of Nanomaterials

Fecha de publicación

17 de febrero de 2019

Tipo de publicación

Artículo

Fuente

1687-4129

Idioma

Inglés

Audiencia

Estudiantes

Investigadores

Repositorio Orígen

REPOSITORIO INSTITUCIONAL DE LA UAEM

Descargas

197

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