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Metallic Nanocrystal Ripening on Inorganic Surfaces.

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.

SUBMITTER: Ranjan P

PROVIDER: S-EPMC6644818 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Metallic Nanocrystal Ripening on Inorganic Surfaces.

Ranjan Priyadarshi P Kaplan-Ashiri Ifat I Popovitz-Biro Ronit R Cohen Sidney R SR Houben Lothar L Tenne Reshef R Lahav Michal M van der Boom Milko E ME

ACS omega 20180618 6

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 cap ...[more]

PMID: 31458829

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