Metallic Nanocrystal Ripening on Inorganic Surfaces

Priyadarshi Ranjan, Ifat Kaplan-Ashiri, Ronit Popovitz-Biro, Sidney R. Cohen, Lothar Houben, Reshef Tenne, Michal Lahav, Milko van der Boom

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Abstract

In this paper, we demonstrate the formation of hybrid nanostructures consisting of two distinctive components mainly in a one-to-one ratio. Thermolysis of inorganic nanotubes (INT) and closed-cage, inorganic fullerene-like (IF) nanoparticles decorated with a dense coating of metallic nanoparticles (M = Au, Ag, Pd) results in migration of relatively small NPs or surface-enhanced diffusion of atoms or clusters, generating larger particles (ripening). AuNP growth on the surface of INTs has been captured in real time using in situ electron microscopy measurements. Reaction of the AuNP-decorated INTs with an alkylthiol results in a chemically induced NP fusion process at room temperature. The NPs do not dissociate from the surfaces of the INTs and IFs, but for proximate IFs we observed fusion between AuNPs originating from different IFs.

Original languageEnglish
Pages (from-to)6533-6539
Number of pages7
JournalACS Omega
Volume3
Issue number6
DOIs
Publication statusPublished - Jun 30 2018

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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  • Cite this

    Ranjan, P., Kaplan-Ashiri, I., Popovitz-Biro, R., Cohen, S. R., Houben, L., Tenne, R., Lahav, M., & van der Boom, M. (2018). Metallic Nanocrystal Ripening on Inorganic Surfaces. ACS Omega, 3(6), 6533-6539. https://doi.org/10.1021/acsomega.8b00779