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

• Hossain, M. Jakir

• Tsunoyama, Hironori

• Yamauchi, Miho

• Ichikuni, Nobuyuki

• Tsukuda, Tatsuya

抄録

Monodisperse PVP-stabilized Pt nanoparticles (PtNPs) with an average diameter of 1.4 ± 0.3 nm were efficiently produced via the complete reduction of Pt4+ ions by BH4- in a micromixer. Because of microfluidic mixing, hydrolytic decomposition of BH4- 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. The PtNPs dispersed in oxygen-saturated water catalyzed the selective oxidation of PhCH2OH to PhCHO.

収録刊行物

• Catalysis Today

  Catalysis Today 183 (1), 101-107, 2012-03-20

  Elsevier B.V.

キーワード

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

詳細情報

• CRID: 1050001339010625664
• NII論文ID: 120003974405
• HANDLE: 2115/49006
• ISSN: 09205861
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles