Rhodium growth on Cu2S nanocrystals yielding hybrid nanoscale inorganic cages and their synergistic properties

Kathy Vinokurov, Yehonadav Bekenstein, Vitaly Gutkin, Inna Popov, Oded Millo, Uri Banin*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

Metal decoration on the edges of highly faceted Cu2S semiconductor nanocrystals yields a family of nano-inorganic caged (NICed) hybrid semiconductor-metal nanoparticles. We present the growth of rhodium and of ruthenium-rhodium mixture to give Rh-Cu2S and RuRh-Cu2S hybrid nanoparticle cages, respectively. Transmission electron microscopy affirms the growth of the metals selectively on the nanocrystal edges within a narrow temperature window. The oxidation level of the metal frame could also be controlled during the reaction stages as characterized by X-ray photoelectron spectroscopy, providing additional variation for the hybrid nanoparticle cages. The synergistic electronic properties of the hybrid nanocages were observed on a single particle level using scanning tunneling spectroscopy. The various cage nanoparticles are also of interest as possible catalysts for metal and metal-oxide catalyzed reactions.

Original languageAmerican English
Pages (from-to)9506-9512
Number of pages7
JournalCrystEngComm
Volume16
Issue number40
DOIs
StatePublished - 28 Oct 2014

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