Silver Nanodisk Growth by Surface Plasmon Enhanced Photoreduction of Adsorbed [Ag+]

Mathieu Maillard, Pinray Huang,† and Louis Brus*
Chemistry Department, Columbia University, New York, New York 10027
Nano Letters, 2003, 3 (11), pp 1611–1615
DOI: 10.1021/nl034666d
Publication Date (Web): October 3, 2003
Copyright © 2003 American Chemical Society
†

 REU student, present address New College of Florida.

,
*

 Corresponding author.

Abstract

Abstract Image

The photoreduction of silver ions by citrate, catalyzed on silver seeds, is used to synthesize disk-shaped silver nanoparticles in solution. The reaction is characterized by transmission electron microscopy (TEM), atomic force microscopy (AFM), optical absorption spectroscopy, and by measuring the silver ion concentration during the reaction. The irradiation wavelength determines the final shape of these particles due to the shape dependence of the Ag plasmon spectrum. The quantum yield of this reaction has been calculated, and a growth mechanism is outlined.

View: Full Text HTML | Hi-Res PDF

Tools

History

  • Published In Issue November 12, 2003
  • Received August 16, 2003
    Revised Manuscript Received September 18, 2003

Recommend & Share

Related Content

Other ACS content by these authors: