Issue 15, 2012

Compositional control of AuPt nanoparticles synthesized in ionic liquids by the sputter deposition technique

Abstract

Bimetallic alloy nanoparticles (NPs) are attractive materials for exploring advanced functions to reduce consumption of resources and energy. AuPt alloy NPs are of special interest for their potential applications to fuel cells, because of the reduction of CO poisoning on Pt. Here, we report the synthesis of AuPt alloy NPs by sputter deposition into (N,N,N-trimethyl-N-propylammonium bis(trifluoromethanesulfonyl) amide (TMPA-TFSA). Transmission electron microscopy (TEM), X-ray fluorescent spectroscopy (XRF) and X-ray diffraction (XRD) measurements showed that changes in particle diameters and compositions of AuPt bimetallic NPs, were controllable by choosing initial compositions of metal targets for the sputter deposition. By cyclic voltammetry measurements, the detection of an anodic peak corresponding to the methanol oxidation reaction on the AuPt NPs demonstrated the presence of an AuPt alloy phase in the NPs.

Graphical abstract: Compositional control of AuPt nanoparticles synthesized in ionic liquids by the sputter deposition technique

Article information

Article type
Paper
Submitted
17 Feb 2012
Accepted
04 May 2012
First published
01 Jun 2012

CrystEngComm, 2012,14, 4922-4926

Compositional control of AuPt nanoparticles synthesized in ionic liquids by the sputter deposition technique

S. Suzuki, T. Suzuki, Y. Tomita, M. Hirano, K. Okazaki, S. Kuwabata and T. Torimoto, CrystEngComm, 2012, 14, 4922 DOI: 10.1039/C2CE25235J

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