Surface Decoration of ϵ ‐Fe 2 O 3 Nanorods by CuO Via a Two‐Step CVD/Sputtering Approach **
2014; Wiley; Volume: 20; Issue: 7-8-9 Linguagem: Inglês
10.1002/cvde.201407108
ISSN1521-3862
AutoresDavide Barreca, Giorgio Carraro, Daniel Peeters, Alberto Gasparotto, Chiara Maccato, W. M. M. Kessels, Valentino Longo, Francesca Rossi, Elza Bontempi, C. Sada, Anjana Devi,
Tópico(s)ZnO doping and properties
ResumoAbstract In this paper we report on the first example of Fe 2 O 3 /CuO composites fabricated by a two‐step vapor‐phase synthetic strategy. The target route is based on the CVD of Fe 2 O 3 nanorod arrays on Si(100) at 400 °C starting from Fe(hfa) 2 TMEDA (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 ‐Fe 2 O 3 and CuO phases. The unique features of the adopted approach enable an efficient surface decoration of ϵ ‐Fe 2 O 3 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.
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