Facile deposition of gold nanoparticles on C60 microcrystals with unique shapes

Zhenquan Tan, Akito Masuhara, Satoshi Ohara, Hitoshi Kasai, Hachiro Nakanishi, Hidetoshi Oikawa

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Gold nanoparticles were densely deposited on the surface of C60 microcrystals having a variety of unique shapes. C60 microcrystals were prepared by a conventional liquid-liquid reprecipitation method. The shapes of C60 microcrystals, such as bipyramid, belt, disc, and rod, were achieved by carefully adjusting the solvent species in the liquid-liquid reprecipitation process. Gold nanoparticles were directly deposited on C 60 microcrystals without adding any conventional reducing agent but only heating HAuCl4 in C60 microcrystals ethanol dispersion containing CS2. Scanning electron microscopy, transmission electron microscopy, energy dispersive X-ray spectroscopy, powder X-ray diffraction, absorption spectroscopy, and X-ray photoelectron spectroscopy studies were conducted to characterize the gold-C60 heterostructure. The gold-C60 heterostructure showed charge transfer behaviour where gold was an electron donor and C60 was an electron acceptor. C 60 microcrystals-supported gold nanoparticles also showed catalytic activity in reduction of p-nitrophenol at room temperature. A facile reduction mechanism was suggested for gold deposition on the surface of C60 microcrystals.

Original languageEnglish
JournalJournal of Nanoparticle Research
Volume15
Issue number11
DOIs
Publication statusPublished - 2013 Nov 1

Keywords

  • Catalytic activity
  • Deposition
  • Fullerene microcrystals
  • Gold nanoparticles
  • Shape control

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Atomic and Molecular Physics, and Optics
  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics

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