New strategy to prepare platinum salts by electrochemical methods and subsequent synthesis of platinum nanoparticles

Fu Der Mai, Chung Chin Yu, Yu Chuan Liu, Ting Chu Hsu, Yi Hao Wu

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

As shown in the literature, most of Pt nanoparticles (NPs) were synthesized from precursors of commercial Pt salts. However, the impurity of the commercial Pt salts is a concerned issue. In this work, we report a new pathway based on electrochemical methods to prepare Pt-containing complexes with high purity in aqueous solutions from bulk Pt substrates. Experimental results indicate that Pt complexes with higher concentration can be obtained in 0.1 N HCl by using square-wave oxidation-reduction cycles (ORCs) under a frequency of 8 Hz with a step potential of 6.3 mV. Moreover, concentrations of other heavy metals of Hg and Cr in 65 ppm Pt complexes-containing solution are just 0.65 and 0.78 ppb, respectively. These Pt complexes were further reduced to Pt NPs by using NaBH 4 and poly(vinylpyrrolidone) (PVP) as reducing agent and stabilizer, respectively. The concentration and the particle size of synthesized Pt (1 1 1) NPs are ca. 60 ppm and smaller than 5 nm, respectively.

Original languageEnglish
Pages (from-to)167-171
Number of pages5
JournalMaterials Research Bulletin
Volume47
Issue number2
DOIs
Publication statusPublished - Feb 2012

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Keywords

  • A. Metals
  • B. Chemical synthesis
  • C. Photoelectron spectroscopy

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

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