Liquid-phase reductive deposition as a novel nanoparticle synthesis method and its application to supported noble metal catalyst preparation

Yoji Sunagawa, Katsutoshi Yamamoto, Hideyuki Takahashi, Atsushi Muramatsu

Research output: Contribution to journalArticlepeer-review

50 Citations (Scopus)

Abstract

In the present study, the liquid-phase reductive deposition as a novel nanoparticle synthesis method has been investigated and its application to supported noble metal catalyst preparation was also focused. As a result, the maximum loading of Pt was around 20 wt% with keeping the particle size below 2 nm, by the present technique based on the liquid-phase reduction method. The selective reductive deposition is characteristically performed by the adsorption of metal ion or complexes on the surfaces and hereby the reduction. Namely, the initial adsorption of metal ions or complexes is the key point of this technique. Hence, key points of this method are: (1) precise control of the metal complex by adjusting solute conditions, such as composition and structure of metal complex, (2) storing of the suspension until the equilibrium composition and (3) aging suspension at controlled temperature. The most important is the first one, as the adsorption of specific metal complex results in the generation of precursor solid on the surfaces of the supporting materials. By this novel method, not only Pt but also Au nanoparticles supported on various carriers were successfully obtained.

Original languageEnglish
Pages (from-to)81-87
Number of pages7
JournalCatalysis Today
Volume132
Issue number1-4
DOIs
Publication statusPublished - 2008 Mar

Keywords

  • Catalyst preparation
  • Liquid-phase reduction method
  • Nanoparticles
  • Noble metal
  • ZrO
  • α-FeO

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

Fingerprint

Dive into the research topics of 'Liquid-phase reductive deposition as a novel nanoparticle synthesis method and its application to supported noble metal catalyst preparation'. Together they form a unique fingerprint.

Cite this