Shape- and size-controlled synthesis in hard templates: Sophisticated chemical reduction for mesoporous monocrystalline platinum nanoparticles

Hongjing Wang, Hu Young Jeong, Masataka Imura, Liang Wang, Logudurai Radhakrishnan, Nobuhisa Fujita, Toen Castle, Osamu Terasaki, Yusuke Yamauchi

Research output: Contribution to journalArticlepeer-review

300 Citations (Scopus)

Abstract

Here we report a novel hard-templating strategy for the synthesis of mesoporous monocrystalline Pt nanoparticles (NPs) with uniform shapes and sizes. Mesoporous Pt NPs were successfully prepared through controlled chemical reduction using ascorbic acid by employing 3D bicontinuous mesoporous silica (KIT-6) and 2D mesoporous silica (SBA-15) as a hard template. The particle size could be controlled by changing the reduction time. Interestingly, the Pt replicas prepared from KIT-6 showed polyhedral morphology. The single crystallinity of the Pt fcc structure coherently extended over the whole particle.

Original languageEnglish
Pages (from-to)14526-14529
Number of pages4
JournalJournal of the American Chemical Society
Volume133
Issue number37
DOIs
Publication statusPublished - 2011 Sep 21

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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