Formation of platinum nanoparticles at air-water interfaces by the spontaneous reduction of subphase chloroplatinate anions by hexadecylaniline Langmuir monolayers

Anita Swami, Ashavani Kumar, Renu Pasricha, Anandrao B. Mandale, Murali Sastry

Research output: Contribution to journalArticle

Abstract

The one-step electrostatic complexation, reduction of aqueous chloroplatinate ions, and capping of the platinum nanoparticles thus formed by hexadecylaniline Langmuir monolayers is described. The capping of the platinum nanoparticles formed spontaneously at the air-water interface by hexadecylaniline enables their facile transfer as multilayers onto suitable solid substrates by the Langmuir-Blodgett technique. The real-time reduction of the aqueous chloroplatinate ions at the air-water interface was followed by measurement of the pressure-area isotherms, while the multilayer Langmuir-Blodgett films were characterized by quartz crystal microgravimetry, transmission electron microscopy, electron diffraction, and X-ray photoemission spectroscopy.

Original languageEnglish (US)
Pages (from-to)381-387
Number of pages7
JournalJournal of Colloid And Interface Science
Volume271
Issue number2
DOIs
StatePublished - Mar 15 2004

Keywords

  • Langmuir monolayers
  • Langmuir-Blodgett films
  • Nanoparticles
  • Pt
  • X-ray photoelectron spectroscopy

ASJC Scopus subject areas

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

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