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,N0,N0-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 e-Fe2O3 and CuO phases. The unique features of the adopted approach enable an efficient surface decoration of e-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.

Surface Decoration of ϵ-Fe2O3 Nanorods by CuO Via a Two-Step CVD/Sputtering Approach

CARRARO, GIORGIO;GASPAROTTO, ALBERTO;MACCATO, CHIARA;SADA, CINZIA;
2014

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,N0,N0-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 e-Fe2O3 and CuO phases. The unique features of the adopted approach enable an efficient surface decoration of e-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.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11577/3144730
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 11
  • ???jsp.display-item.citation.isi??? 11
social impact