Surface decoration of ε-Fe2O3 nanorods by CuO via a two-step CVD/sputtering approach

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Davide Barreca - , University of Padua (Author)
  • Giorgio Carraro - , University of Padua (Author)
  • Daniel Peeters - , University of Padua (Author)
  • Alberto Gasparotto - , University of Padua (Author)
  • Chiara Maccato - , University of Padua (Author)
  • Wilhelmus M.M. Kessels - , Eindhoven University of Technology (Author)
  • Valentino Longo - , Eindhoven University of Technology (Author)
  • Francesca Rossi - , National Research Council of Italy (CNR) (Author)
  • Elza Bontempi - , University of Brescia (Author)
  • Cinzia Sada - , University of Padua (Author)
  • Anjana Devi - , Ruhr University Bochum (Author)

Abstract

In this paper we report on the first example of Fe2O3/CuO composites fabricated by a two-step vapor-phase synthetic strategy. The target route is based on the CVD of Fe2O3 nanorod arrays on Si(100) at 400°C starting from Fe(hfa)2TMEDA (hfa=1,1,1,5,5,5-hexafluoro-2,4-pentanedionate; TMEDA=N,N,N',N'-tetramethylethylenediamine), followed by radio frequency (RF) copper sputtering for various process durations, and final ex-situ annealing in air. The combined use of complementary structural, morphological, and chemical analyses give evidence of the formation of pure nanocomposite systems, characterized by the presence of the sole ε-Fe2O3 and CuO phases. The unique features of the adopted approach enable an efficient surface decoration of ε-Fe2O3 rods by CuO nanoparticles a few nm in diameter, resulting in an intimate contact between the two oxides, and a CuO content tunable through variations of the sole sputtering time.

Details

Original languageEnglish
Pages (from-to)313-319
Number of pages7
JournalChemical Vapor Deposition
Volume20
Issue number7-9
Publication statusPublished - 1 Sept 2014
Peer-reviewedYes
Externally publishedYes

Keywords

Keywords

  • CuO, CVD, Nanocomposites, Sputtering, ε-FeO