Highly fluorescent few atoms silver nanoclusters with strong photocatalytic activity synthesized by ultrashort light pulses

While there are conventional chemical synthesis methods to generate metal nanoclusters (NCs), many of them are adversely affected by the unavoidable contamination of the nanoproduct solution, resulting in aggregation, background noise in analytical chemistry, toxicity, and deactivation of the cataly...

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Detalles Bibliográficos
Autores principales:	Santillán, Jesica María José, Muñetón Arboleda, David, Muraca, Diego, Schinca, Daniel Carlos, Scaffardi, Lucía Beatriz
Formato:	Articulo
Lenguaje:	Inglés
Publicado:	2020
Materias:	Ciencias Exactas Física Ingeniería ultrafast laser ablation green synthesis silver NCs colloids fluorescence spectroscopy HRTEM measurements
Acceso en línea:	http://sedici.unlp.edu.ar/handle/10915/123511
Aporte de:	SEDICI (UNLP) de Universidad Nacional de La Plata

id	I19-R120-10915-123511
record_format	dspace
institution	Universidad Nacional de La Plata
institution_str	I-19
repository_str	R-120
collection	SEDICI (UNLP)
language	Inglés
topic	Ciencias Exactas Física Ingeniería ultrafast laser ablation green synthesis silver NCs colloids fluorescence spectroscopy HRTEM measurements
spellingShingle	Ciencias Exactas Física Ingeniería ultrafast laser ablation green synthesis silver NCs colloids fluorescence spectroscopy HRTEM measurements Santillán, Jesica María José Muñetón Arboleda, David Muraca, Diego Schinca, Daniel Carlos Scaffardi, Lucía Beatriz Highly fluorescent few atoms silver nanoclusters with strong photocatalytic activity synthesized by ultrashort light pulses
topic_facet	Ciencias Exactas Física Ingeniería ultrafast laser ablation green synthesis silver NCs colloids fluorescence spectroscopy HRTEM measurements
description	While there are conventional chemical synthesis methods to generate metal nanoclusters (NCs), many of them are adversely affected by the unavoidable contamination of the nanoproduct solution, resulting in aggregation, background noise in analytical chemistry, toxicity, and deactivation of the catalyst. In this work, physical method of ultrafast laser ablation as a “green” synthesis approach together with mechanical centrifugation to obtain silver NCs, simplifying widely the chemical synthesis requirements, is proposed. Remarkably, compared with conventional methods for synthesizing Ag NCs, this new approach starts with a colloid that contains nanosized particles as well as smaller species, managing to obtain colloids with few atoms NCs by centrifugation. Those colloids were analyzed by fluorescence spectroscopy observing UV bands corresponding with HOMO-LUMO cluster transitions. Besides, independent HRTEM measurements were made confirming the presence of few atoms Ag NCs, as well as small NPs in different formation stages. Equally important, photocatalytic efficiency of the obtained NCs was studied through degradation of Methylene Blue (MB) when it was mixed with as-prepared or highly centrifuged colloid, showing an enhanced photocatalytic efficiency of 79% as compared to 57% for pure MB after 180 min of illumination. Consequently, this work contributes to establishing a simple approach to synthesize highly fluorescent and photocatalytic NCs.
format	Articulo Articulo
author	Santillán, Jesica María José Muñetón Arboleda, David Muraca, Diego Schinca, Daniel Carlos Scaffardi, Lucía Beatriz
author_facet	Santillán, Jesica María José Muñetón Arboleda, David Muraca, Diego Schinca, Daniel Carlos Scaffardi, Lucía Beatriz
author_sort	Santillán, Jesica María José
title	Highly fluorescent few atoms silver nanoclusters with strong photocatalytic activity synthesized by ultrashort light pulses
title_short	Highly fluorescent few atoms silver nanoclusters with strong photocatalytic activity synthesized by ultrashort light pulses
title_full	Highly fluorescent few atoms silver nanoclusters with strong photocatalytic activity synthesized by ultrashort light pulses
title_fullStr	Highly fluorescent few atoms silver nanoclusters with strong photocatalytic activity synthesized by ultrashort light pulses
title_full_unstemmed	Highly fluorescent few atoms silver nanoclusters with strong photocatalytic activity synthesized by ultrashort light pulses
title_sort	highly fluorescent few atoms silver nanoclusters with strong photocatalytic activity synthesized by ultrashort light pulses
publishDate	2020
url	http://sedici.unlp.edu.ar/handle/10915/123511
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bdutipo_str	Repositorios
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Highly fluorescent few atoms silver nanoclusters with strong photocatalytic activity synthesized by ultrashort light pulses

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