Facile production of stable silicon nanoparticles: laser chemistry coupled to in situ stabilization via room temperature hydrosilylation

Malumbres, A. ; Martinez, G. (Universidad de Zaragoza) ; Hueso, J.L. ; Gracia, J. ; Mallada, R. ; Ibarra, A. ; Santamaria, J.

Resumen: Stable, alkyl-terminated, light-emitting silicon nanoparticles have been synthesized in a continuous process by laser pyrolysis of a liquid trialkyl-silane precursor selected as a safer alternative to gas silane (SiH4). Stabilization was achieved by in situ reaction using a liquid collection system instead of the usual solid state filtration. The alkene contained in the collection liquid (1-dodecene) reacted with the newly formed silicon nanoparticles in an unusual room-temperature hydrosilylation process. It was achieved by the presence of fluoride species, also produced during laser pyrolysis from the decomposition of sulfur hexafluoride (SF6) selected as a laser sensitizer. This process directly rendered alkyl-passivated silicon nanoparticles with consistent morphology and size (<3 nm), avoiding the use of costly post-synthetic treatments.

Idioma: Inglés

DOI: 10.1039/c5nr01031d

Año: 2015

Publicado en: Nanoscale 7 (2015), 8566-8573
ISSN: 2040-3364

Factor impacto JCR: 7.76 (2015)

Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 23 / 271 = 0.085 (2015) - Q1 - T1
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 12 / 83 = 0.145 (2015) - Q1 - T1
Categ. JCR: CHEMISTRY, MULTIDISCIPLINARY rank: 18 / 163 = 0.11 (2015) - Q1 - T1
Categ. JCR: PHYSICS, APPLIED rank: 12 / 145 = 0.083 (2015) - Q1 - T1

Factor impacto SCIMAGO: 2.77 - Nanoscience and Nanotechnology (Q1) - Materials Science (miscellaneous) (Q1)

Financiación: info:eu-repo/grantAgreement/EC/FP7/294094/EU/Synthesis and characterization of NANOstructured materials with LumInescent properties for diaGnostic and tHerapeuTic applications/NANOLIGHT

Tipo y forma: Article (Published version)

Área (Departamento): Área Ingeniería Química (Dpto. Ing.Quím.Tecnol.Med.Amb.)