High-yield synthesis of PVP-stabilized small Pt clusters by microfluidic method

M. Jakir Hossain, Hironori Tsunoyama, Miho Yamauchi, Nobuyuki Ichikuni, Tatsuya Tsukuda

Research output: Contribution to journalArticle

30 Citations (Scopus)

Abstract

Monodisperse PVP-stabilized Pt nanoparticles (PtNPs) with an average diameter of 1.4 ± 0.3 nm were efficiently produced via the complete reduction of Pt 4+ ions by BH 4 - in a micromixer. Because of microfluidic mixing, hydrolytic decomposition of BH 4 - by the PtNPs formed in the initial stage of the reaction was suppressed, and hence, the PtNP yield was higher than that in the conventional batch mixing. The results of various spectroscopic analyses including EXAFS, FTIR of CO and XPS revealed that the microfluidically synthesized PtNPs were negatively charged and had a high population of edges and vertices on their surface.

Original languageEnglish
Pages (from-to)101-107
Number of pages7
JournalCatalysis Today
Volume183
Issue number1
DOIs
Publication statusPublished - 2012 Mar 20

Keywords

  • Aerobic alcohol oxidation
  • Micromixer
  • PVP-stabilized Pt nanoparticles
  • Reusable catalyst

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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    Hossain, M. J., Tsunoyama, H., Yamauchi, M., Ichikuni, N., & Tsukuda, T. (2012). High-yield synthesis of PVP-stabilized small Pt clusters by microfluidic method. Catalysis Today, 183(1), 101-107. https://doi.org/10.1016/j.cattod.2011.10.008