Preparation of Pt particles dispersing nanocomposites by thermal treatment of tetrachloroplatinate/layered double hydroxide (LDH)

Yoshikazu Kameshima, Akira Nakajima, Kiyoshi Okada, Toyohiko Yano

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

Mg-Al LDH intercalated PtCL42- anion (PtCl 4-LDH) was synthesized by a reconstruction method using potassium tetrachloroplatinate and its thermal changes were investigated at various temperatures. The PtCl4-LDH included 17 mass% Pt was synthesized by a reconstruction method using K2PtCl4 solution of 10 mM to adjust the pH with NaOH to about 11. The obtained PtCl4-LDH shows high crystallinity and has low content of CO32-. The basal spacing of the obtained PtCl4-LDH was 0.83 nm expanding slightly from 0.78 nm of starting LDH. The XRD patterns of the obtained PtCl 4-LDH showed that the second 001 diffraction line (006) became more accentuated than the first one (003) according to the intercalation of Pt components. Pt fine particles in the several nm were directly observed by TEM after firing at 500°C. However, the diffraction patterns of Pt or Pt components were not detected via XRD in the same sample. This is due to the coagulation of Pt components by the narrow basal spacing of the PtCl4-LDH.

Original languageEnglish
Pages (from-to)1229-1232
Number of pages4
JournalJournal of the Ceramic Society of Japan
Volume117
Issue number1371
DOIs
Publication statusPublished - Nov 2009

Keywords

  • Layered double hydroxide
  • Nanocomposite
  • Ptcl intercalation
  • Thermal treatment

ASJC Scopus subject areas

  • Ceramics and Composites
  • Chemistry(all)
  • Condensed Matter Physics
  • Materials Chemistry

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