Journal
CHEMISTRY OF MATERIALS
Volume 23, Issue 21, Pages 4688-4693Publisher
AMER CHEMICAL SOC
DOI: 10.1021/cm201166t
Keywords
metallic nanoparticles; electrolysis; polyoxometalate; [alpha-SiW12O40](4-); reductant; stabilizing agent
Funding
- Institute of Bioengineering and Nanotechnology (Biomedical Research Council, Agency for Science, Technology and Research, Singapore)
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In this paper, controlled potential bulk electrolysis at a glassy carbon working electrode was conveniently employed to produce the reduced forms of H-4[alpha-SiW12O40] with little or no supporting electrolyte. Consequently, without the need for separation and purification, these reduced forms of [alpha-SiW12O40](4-) were directly used as both the reductants and the stabilizing agents for the size-controlled synthesis of various types of metallic and alloy nanoparticles, including Au, Ag, Pt, Pd and Ag-Au. Ni nanoparticles were also successfully synthesized using highly reduced [alpha-SiW12O40](4-) under neutral pH condition. The Pt nanoparticles thus obtained displayed attractive electrocatalytic properties in methanol oxidation.
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