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Title: Sputter deposition onto ionic liquids: Simple and clean synthesis of highly dispersed ultrafine metal nanoparticles

Sputter deposition of gold (Au) onto ionic liquids (ILs) resulted in the formation of highly dispersed Au nanoparticles without additional chemical species, such as reducing and/or stabilizing agents. The Au nanoparticles in 1-ethyl-3-methylimidazolium tetrafluoroborate had an average diameter (d{sub av}) of 5.5 nm with a standard deviation ({sigma}) of 0.86 nm, while sputter deposition onto N,N,N-trimethyl-N-propylammonium bis(trifluoromethanesulfonyl)imide resulted in the formation of much smaller Au nanoparticles with d{sub av} of 1.9 nm and {sigma} of 0.46 nm. Prolongation of sputtering time results in a higher concentration of Au nanoparticles in ILs, but did not cause a remarkable change in their size.
Authors:
; ; ; ; ;  [1] ;  [2] ;  [2]
  1. Graduate School of Engineering, Nagoya University, Chikusa-ku, Nagoya 464-8603 (Japan)
  2. (Japan)
Publication Date:
OSTI Identifier:
20880175
Resource Type:
Journal Article
Resource Relation:
Journal Name: Applied Physics Letters; Journal Volume: 89; Journal Issue: 24; Other Information: DOI: 10.1063/1.2404975; (c) 2006 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DEPOSITION; FLUOROBORATES; GOLD; NANOSTRUCTURES; PARTICLE SIZE; PARTICLES; SPUTTERING; TRANSMISSION ELECTRON MICROSCOPY