Repositorio UFRO · Omeka S

Silver nanoparticle's size and morphology relationship with their electrocatalysis and detection properties

Primer Autor	Ahumada, Manuel
Co-autores	Lorca-Ponce, Javier Urzua, Esteban Avila-Salas, Fabian Ramirez, Andres M.
Título	Silver nanoparticle's size and morphology relationship with their electrocatalysis and detection properties
Editorial	ELSEVIER
Revista	APPLIED SURFACE SCIENCE
Lenguaje	en
Resumen	The development of electrochemical sensors based on silver nanoparticles (AgNPs) is a prominent field for detecting different analytes, nonetheless, several parameters should be considered, particularly regarding the nanostructure. This work investigates the influence of the nanoparticle's morphology over the methylene blue (MB) degradation reaction evaluated by electrochemical techniques. To this end, AgNPs were synthesized by photochemical means, and posteriorly, their morphology was modified through a light irradiation process at specific wavelengths to avoid the addition of any further reagent. The voltammetric results showed that AgNPs with a lower available surface area have a higher current response (catalytic activity) towards MB degradation. Further, it was demonstrated that the proper selection of morphology allowed a lower detection limit of MB than those reported in the literature and could distinguish between molecular processes occurring at the interface level properly. While additional work is required to finetune a sensor based on AgNP, our contribution sheds new light on the electrochemical relevance of morphology and surface area of AgNPs.
Fecha Publicación	2023
Tipo de Recurso	artículo original
doi	10.1016/j.apsusc.2023.156584
Formato Recurso	PDF
Palabras Claves	Silver nanoparticles ? morphology Nanoelectrochemistry Methylene blue detection Electrocatalytic activity dependency with nanoparticle ?s available surface
Ubicación del archivo	http://dx.doi.org/10.1016/j.apsusc.2023.156584
Categoría OCDE	Química Ciencia de Materiales Física
Materias	morfología de Nanopartículas de plata Nanoelectroquímica Detección de azul de metileno Dependencia de la actividad electrocatalítica con Superficie disponible de las nanopartículas.
Identificador del recurso (Mandatado-único)	artículo original
Versión del recurso (Recomendado-único)	versión publicada
Derechos de acceso	metadata
Access Rights	metadata
Id de Web of Science	WOS:000927979700001
ISSN	0169-4332
Tipo de ruta	hibrida
Categoría WOS	Química Ciencia de Materiales Física
Referencia del Financiador (Mandatado si es aplicable-repetible)	ANID-FONDECYT 11180616 ANID-FONDECYT 1230426 ANID FONDECYT 11180616 ANID FONDECYT 1230426