PtxCuy@TiO2 nanoparticles by low-pressure plasma synthesis

Loris Chavée, Jean François Colomer, Alexandre Nominé, Stéphanie Bruyère, Amine Achour, Laurent Houssiau, Emile Haye

Research output: Contribution to journalArticlepeer-review

Abstract

A new and original method is presented to synthesize Pt, Cu, and PtxCuy nanoparticles (NPs) anchored onto an inorganic nanopowder substrate (TiO2), based on the plasma degradation, within an Ar/NH3 radiofrequency plasma discharge, of solid organometallics (Cu and Pt acetylacetonate), mixed with TiO2. Both chemical and crystallographic characterizations confirm the formation of metastable alloyed Pt-Cu nanoparticles. The difference of Pt and Cu concentrations in NPs measured with a volume technique (X-ray diffraction) and a surface technique (X-ray photoelectron spectroscopy) suggests a Pt concentration gradient within NPs attributed to a difference in organometallics degradation kinetics.

Original languageEnglish
Article number129576
JournalMaterials Letters
Volume291
Early online date18 Feb 2021
DOIs
Publication statusPublished - 15 May 2021

Keywords

  • Alloys
  • Nanoparticle
  • RF-ICP plasma

Fingerprint

Dive into the research topics of 'Pt<sub>x</sub>Cu<sub>y</sub>@TiO<sub>2</sub> nanoparticles by low-pressure plasma synthesis'. Together they form a unique fingerprint.

Cite this