New method to single-crystal micrometer-sized ultra-thin silver nanosheets: Synthesis and characterization

Zhengtao Deng, Masud Mansuipur, Anthony J. Muscat

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

We reported a new method, which uses Cu + as the efficient and clean reducing agent, to synthesize micrometer-sized ultra-thin silver (Ag) nanosheets in organic solvent containing oleylamine (OAm). The as-synthesized Ag nanosheets are single-crystal, with regular triangular, truncated triangular, hexagonal, and dodecahedral (truncated hexagonal) shapes, with 3 - 8μm edge length and 25 ± 15 nm thickness, which are in contrast to the previous reported micrometer-sized metal nanosheets with thickness above 40 nm. Analysis is performed by X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectroscopy, transmission electron microscopy, selected area electron diffraction, X-ray photoelectron spectroscopy, UV - vis-NIR absorption and transmittanee spectroscopy, and optical microscopy, indicating that single-crystal Ag nanosheets are of high quality with a large in-plane size, ultra-thin thickness, and top and bottom enclosed by {111} facets. The present study provides a simple and extendable method to synthesis of micrometer-scale ultra-thin metal nanosheets holding promises for novel physical properties and functional nanodevices.

Original languageEnglish (US)
Pages (from-to)867-873
Number of pages7
JournalJournal of Physical Chemistry C
Volume113
Issue number3
DOIs
StatePublished - Jan 22 2009
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Energy(all)
  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films

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