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

研究成果: 雜誌貢獻文章同行評審

3 引文 斯高帕斯(Scopus)

摘要

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.

原文英語
頁(從 - 到)167-171
頁數5
期刊Materials Research Bulletin
47
發行號2
DOIs
出版狀態已發佈 - 二月 2012

ASJC Scopus subject areas

  • 材料科學(全部)
  • 凝聚態物理學
  • 材料力學
  • 機械工業

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