Stable magneto-plasmonic nanoparticles in colloidal suspensions are fabricated by two-step nanosecond pulsed laser ablation of nickel and silver targets in pure water and characterized by UV-visible absorption, Raman, X-ray photoelectron spectroscopic, and magnetic measurements, along with high-resolution electron microscopy analysis. These systems are constituted by a low-crystallinity matrix of ferromagnetic nickel hydroxide, where nickel oxide nanocrystals are embedded,, with silver nanoparticles intimately linked to them. The surface enhanced Raman scattering activity is assessed by adsorption of adenine as probe ligand. Spectroscopic investigation and density functional theory calculations revealed that adenine is linked to nickel oxide, while nanosilver essentially plays the role of ensuring the Raman enhancement for the adsorbed organic ligand. Both magnetic and plasmonic properties allow using these nanostructured bimetallic platforms as catalysts in chemical reactions or nanosensors in biomedicine as well as in environmental research.

Magneto-Plasmonic Colloidal Nanoparticles Obtained by Laser Ablation of Nickel and Silver Targets in Water / Gellini, Cristina; Deepak, Francis Leonard; Muniz Miranda, Maurizio; Caporali, Stefano; Muniz Miranda, Francesco; Pedone, Alfonso; Innocenti, Claudia; Sangregorio, Claudio. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - 121:6(2017), pp. 3597-3606. [10.1021/acs.jpcc.6b11628]

Magneto-Plasmonic Colloidal Nanoparticles Obtained by Laser Ablation of Nickel and Silver Targets in Water

MUNIZ MIRANDA, FRANCESCO;PEDONE, Alfonso;
2017

Abstract

Stable magneto-plasmonic nanoparticles in colloidal suspensions are fabricated by two-step nanosecond pulsed laser ablation of nickel and silver targets in pure water and characterized by UV-visible absorption, Raman, X-ray photoelectron spectroscopic, and magnetic measurements, along with high-resolution electron microscopy analysis. These systems are constituted by a low-crystallinity matrix of ferromagnetic nickel hydroxide, where nickel oxide nanocrystals are embedded,, with silver nanoparticles intimately linked to them. The surface enhanced Raman scattering activity is assessed by adsorption of adenine as probe ligand. Spectroscopic investigation and density functional theory calculations revealed that adenine is linked to nickel oxide, while nanosilver essentially plays the role of ensuring the Raman enhancement for the adsorbed organic ligand. Both magnetic and plasmonic properties allow using these nanostructured bimetallic platforms as catalysts in chemical reactions or nanosensors in biomedicine as well as in environmental research.
2017
121
6
3597
3606
Magneto-Plasmonic Colloidal Nanoparticles Obtained by Laser Ablation of Nickel and Silver Targets in Water / Gellini, Cristina; Deepak, Francis Leonard; Muniz Miranda, Maurizio; Caporali, Stefano; Muniz Miranda, Francesco; Pedone, Alfonso; Innocenti, Claudia; Sangregorio, Claudio. - In: JOURNAL OF PHYSICAL CHEMISTRY. C. - ISSN 1932-7447. - 121:6(2017), pp. 3597-3606. [10.1021/acs.jpcc.6b11628]
Gellini, Cristina; Deepak, Francis Leonard; Muniz Miranda, Maurizio; Caporali, Stefano; Muniz Miranda, Francesco; Pedone, Alfonso; Innocenti, Claudia; Sangregorio, Claudio
File in questo prodotto:
File Dimensione Formato  
art84.pdf

Accesso riservato

Descrizione: art84
Tipologia: Versione pubblicata dall'editore
Dimensione 2.05 MB
Formato Adobe PDF
2.05 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1130835
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 24
  • ???jsp.display-item.citation.isi??? 19
social impact