Formation of metallic Ni nanoparticles on titania surfaces by chemical vapor reductive deposition method

Masaki Yoshinaga, Hideyuki Takahashi, Katsutoshi Yamamoto, Atsushi Muramatsu, Takeshi Morikawa

Research output: Contribution to journalArticlepeer-review

26 Citations (Scopus)

Abstract

Metallic Ni nanoparticles were successfully prepared on the surface of titania thin film substrate by a novel method, named as chemical vapor reductive deposition (CVRD) method. The growth of the nanoparticles was based on the specific adsorption and heterogeneous nucleation on the surface of substrate, not via vapor-phase formation and subsequent sedimentation. The nanoparticle size was found to be well controllable between 10 and 30 nm by the preparation time and vapor pressure of metal complex precursor. ESCA and electron diffraction results clearly demonstrated Ni nanoparticles as metallic. Titania thin film with metallic Ni nanoparticles on its surface showed high efficiency in their photocatalysis of hydrogen evolution from decomposition of ethanol.

Original languageEnglish
Pages (from-to)149-154
Number of pages6
JournalJournal of Colloid And Interface Science
Volume309
Issue number1
DOIs
Publication statusPublished - 2007 May 1

Keywords

  • Ethanol decomposition
  • Growth control
  • Heteronucleation
  • High dispersibility
  • Hydrogen
  • Ni nanoparticles
  • Photocatalysis
  • Titania thin films

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Surfaces, Coatings and Films
  • Colloid and Surface Chemistry

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