Artículo
Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties
Félix, Lizbet León; Martinez Porcel, Joaquin Emiliano
; Herrera Aragón, Fermín Fidel; Pacheco Salazar, David Gregorio; Sousa, Marcelo Henrique
![Icon](/themes/CONICETDigital/images/conicet.png)
Fecha de publicación:
04/2021
Editorial:
Springer
Revista:
SN Applied Sciences
ISSN:
2523-3971
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
We describe a simple method for the preparation of gold-decorated silica (SiO2) nanoparticles (NPs) by the in situ precipitation method using simple BH4− ions reduction as a procedure, where BH4− ions are adsorbed onto PEI-functionalized SiO2 NPs for stabilizing and reducing gold ions onto PEI-SiO2 surface in water under ambient conditions. The result was 3-nm gold nanoshell NPs attached to SiO2 core (~ 75 nm) with a surface plasmon resonance (SPR) at ~ 680 nm. SPR band is associated with Au NP aggregates that arise from strong interparticle interaction. This is an alternative to the gold-seeding methods and the use of anionic gold species for the obtention of gold-decorated SiO2 NPs with an important red-shift in UV–Vis absorption and with potential applications in biosensors and photothermal therapy.
Palabras clave:
DECORATED
,
GOLD
,
PEI-COATED SILICA
,
PLASMONIC
,
POLYETHYLENEIMINE
,
RED-SHIFT
Archivos asociados
Licencia
Identificadores
Colecciones
Articulos(INIFTA)
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Articulos de INST.DE INV.FISICOQUIMICAS TEORICAS Y APLIC.
Articulos(INQUIMAE)
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Articulos de INST.D/QUIM FIS D/L MATERIALES MEDIOAMB Y ENERGIA
Citación
Félix, Lizbet León; Martinez Porcel, Joaquin Emiliano; Herrera Aragón, Fermín Fidel; Pacheco Salazar, David Gregorio; Sousa, Marcelo Henrique; Simple synthesis of gold-decorated silica nanoparticles by in situ precipitation method with new plasmonic properties; Springer; SN Applied Sciences; 3; 4; 4-2021; 1-10
Compartir
Altmétricas