Studying the chemical, optical and catalytic properties of noble metal (Pt, Pd, Ag, Au)-Cu2O core-shell nanostructures grown via a general approach

Noga Meir, Ilan Jen-La Plante, Kobi Flomin, Elina Chockler, Brian Moshofsky, Mahmud Diab, Michael Volokh, Taleb Mokari

Research output: Contribution to journalArticlepeer-review

99 Scopus citations

Abstract

We studied the chemical, optical and catalytic properties of metal (Pt, Pd, Ag, Au)-Cu2O core-shell nanoparticles grown via a simple and reproducible approach which utilizes aqueous-phase reactions at room temperature. We were able to control the thickness of the Cu2O shell and examine the effect of the core's shape and size on the structure and properties of the hybrid nanocrystals. We also studied the optical properties of the hybrid nanocrystals, in particular the effect of the Cu2O shell thickness on the frequency of the plasmon of gold nanorods. In addition, the catalytic activity of the hybrid nanostructures was examined by testing the reduction reaction of 4-nitrophenol with NaBH4. Finally, the hybrid metal-Cu2O nanostructures were used as templates to form the yolk-shell of metal-Cu2S materials. The interface and the crystalline structures of the four hybrid nanostructures were extensively characterized by high resolution transmission electron microscopy (HRTEM), energy-filtered TEM (EFTRM) and X-ray diffraction (XRD).

Original languageEnglish
Pages (from-to)1763-1769
Number of pages7
JournalJournal of Materials Chemistry A
Volume1
Issue number5
DOIs
StatePublished - 7 Feb 2013

ASJC Scopus subject areas

  • General Chemistry
  • Renewable Energy, Sustainability and the Environment
  • General Materials Science

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