Synthesis and characterization of Pb@GaS core-shell fullerene-like nanoparticles and nanotubes

Olga Brontvein, Lothar Houben, Ronit Popovitz-Biro, Moshe Levy, Daniel Feuermann, Reshef Tenne, Jeffrey M. Gordon

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

New types of core-shell nanoparticles are reported: Pb@GaS fullerene-like and nanotubular structures, achieved via the continuously high reactor temperatures and ultra-hot strong-gradient annealing environments created by highly concentrated sunlight. Structural and chemical characterizations suggest a formation mechanism where vaporized Pb condenses into nanoparticles that are stabilized as they become covered by molten GaS, the ensuing crystallization of which creates the outer layers. Hollow-core GaS fullerene-like nanoparticles and nanotubes were also observed among the products, demonstrating that a single solar procedure can generate a variety of core-shell and hollow nanostructures. The proposed formation mechanisms can account for their relative abundance and the characterization data.

Original languageEnglish
Article number1750030
JournalNano
Volume12
Issue number3
DOIs
StatePublished - 1 Mar 2017

Keywords

  • Core-shell
  • Pb-filled
  • gallium sulfide
  • inorganic fullerene-like
  • nanotubes
  • solar ablation

ASJC Scopus subject areas

  • Materials Science (all)
  • Condensed Matter Physics

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