http://www.cnr.it/ontology/cnr/individuo/prodotto/ID47629
LaCoO3 nanosystems by an hybrid CVD/Sol-Gel approach (Articolo in rivista)
- Type
- Label
- LaCoO3 nanosystems by an hybrid CVD/Sol-Gel approach (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Alternative label
L. Armelao, D. Barreca, G. Bottaro, A. Gasparotto, C. Maragno, E. Tondello, C. Sada (2005)
LaCoO3 nanosystems by an hybrid CVD/Sol-Gel approach
in Journal of nanoscience and nanotechnology (Print)
(literal)
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- L. Armelao, D. Barreca, G. Bottaro, A. Gasparotto, C. Maragno, E. Tondello, C. Sada (literal)
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- ISI Web of Science (WOS) (literal)
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- 1,2,3: ISTM-CNR and INSTM - Department of Chemistry - Padova University - Via Marzolo, 1 - 35131 Padova, Italy.
4,5,6: Department of Chemistry - Padova University and INSTM - Via Marzolo, 1 - 35131 Padova, Italy.
7: INFM and Physics Department - Padova University - Via Marzolo, 8 - 35131 Padova, Italy. (literal)
- Titolo
- LaCoO3 nanosystems by an hybrid CVD/Sol-Gel approach (literal)
- Abstract
- LaCoO3 nanosystems are receiving increasing attention for the development of innovative fuel cells and heterogeneous catalysts. In this report, we describe the synthesis of nanophasic LaCoO3 thin films by an hybrid Chemical Vapor Deposition (CVD)/Sol-Gel (SG) approach. The adopted strategy consists in the CVD of La-O-based systems on SG cobalt oxide xerogels CoOx(OH)y at temperatures as low as 200°C and in the subsequent thermal treatment in air (400÷800°C, 2÷8 h). In this context, particular attention is devoted to achieving an intimate La/Co intermixing already in the as-prepared systems, in order to favour reactions yielding a single La-Co-O phase with uniform composition.
The obtained results point out to the formation of pure and structurally homogeneous LaCoO3 nanosystems after annealing at 700°C, 2 h, with a typical grain-like morphology. More severe thermal treatment resulted in the thermal decomposition of LaCoO3 nanocrystallites. (literal)
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