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Title: An improved Brust's procedure for preparing alkylamine stabilized Pt, Ru nanoparticles
Authors: Yang, J.
Lee, J.Y. 
Deivaraj, T.C. 
Too, H.-P.
Keywords: Alkylamine stabilized nanoparticles
Phase transfer
Platinum nanoparticles
Ruthenium nanoparticles
Issue Date: 15-Jun-2004
Citation: Yang, J., Lee, J.Y., Deivaraj, T.C., Too, H.-P. (2004-06-15). An improved Brust's procedure for preparing alkylamine stabilized Pt, Ru nanoparticles. Colloids and Surfaces A: Physicochemical and Engineering Aspects 240 (1-3) : 131-134. ScholarBank@NUS Repository.
Abstract: An improved method to prepare alkylamine-stabilized Pt and Ru nanoparticles based on the original Brust's procedure [J. Chem. Soc., Chem. Commun. (1994) 801] has been developed. The new method involves, firstly, mixing an aqueous solution of metal salts such as PtCl6 2-, PtCl 4 2- or Ru3+ with an ethanol solution of dodecylamine; extracting the metal ions into a toluene layer; and finally reducing the metal ions to their zero valent states using NaBH4. Alkylamine-stabilized Pt nanoparticles prepared this way had a polyhedral or wormlike appearance, depending closely on the chemical nature of the metal precursor salts being used. On the contrary, dodecylamine-stabilized ruthenium nanoparticles were predominantly spherical. The particle formation and growth processes in the hydrocarbon layer could be influenced by the different ways dodecylamine was bound to H2PtCl6, K2PtCl 4 or RuCl3 at the precursor stage. © 2004 Elsevier B.V. All rights reserved.
Source Title: Colloids and Surfaces A: Physicochemical and Engineering Aspects
ISSN: 09277757
DOI: 10.1016/j.colsurfa.2004.03.019
Appears in Collections:Staff Publications

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