Comparative study of nanocrystalline Zr0.85Ce0.15O2 powders synthesised by spray-pyrolysis and gel-combustion methods
| Autor: | Elisabeth Djurado, N.E. Walsöe de Reca, Diego Germán Lamas, E. D. Cabanillas, Gustavo E. Lascalea |
|---|---|
| Přispěvatelé: | Centro de Investigaciones en Sólidos [Buenos Aires] (CINSO), Instituto de Investigaciones Científicas y Técnicas de las Fuerzas Armadas [Buenos Aires] (CITEFA)-Consejo Nacional de Investigaciones Científicas y Técnicas [Buenos Aires] (CONICET), Laboratoire d'Electrochimie et de Physico-chimie des Matériaux et des Interfaces (LEPMI ), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National Polytechnique de Grenoble (INPG)-Institut de Chimie du CNRS (INC)-Université Savoie Mont Blanc (USMB [Université de Savoie] [Université de Chambéry])-Centre National de la Recherche Scientifique (CNRS), Centro Atómico Constituyentes (CAC), Comisión Nacional de Energía Atómica [ARGENTINA] (CNEA) |
| Jazyk: | angličtina |
| Rok vydání: | 2005 |
| Předmět: |
Thermogravimetric analysis
Materials science Analytical chemistry 02 engineering and technology Tetragonal crystal system symbols.namesake Differential thermal analysis Specific surface area General Materials Science Chemical synthesis 020502 materials Mechanical Engineering Oxides [CHIM.MATE]Chemical Sciences/Material chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Nanocrystalline material X-ray diffraction 0205 materials engineering Mechanics of Materials X-ray crystallography Raman spectroscopy symbols Crystallite 0210 nano-technology |
| Zdroj: | Materials Research Bulletin Materials Research Bulletin, Elsevier, 2005, 40, pp. 2029-2038. ⟨10.1016/j.materresbull.2005.08.017⟩ |
| ISSN: | 0025-5408 1873-4227 |
| DOI: | 10.1016/j.materresbull.2005.08.017⟩ |
| Popis: | International audience; Zr0.85Ce0.15O2 nanopowders synthesised by gel-combustion and spray-pyrolysis methods were comparatively studied by means of X-ray diffraction, Raman spectroscopy, thermogravimetric and differential thermal analyses, specific surface area measurements, scanning and transmission electron microscopies and chemical analysis. Fully tetragonal powders were obtained by both methods, as determined by X-ray diffraction and Raman spectroscopy. Both materials exhibited extremely small crystallite sizes (about 6 nm) and high specific surface areas (93 m2/g and 42 m2/g for gel-combustion and spray-pyrolysis powders, respectively). In both cases, no tetragonal-to-monoclinic transition was observed in the whole temperature range up to 1300 °C by differential thermal analysis. The amounts of the expected impurities (Si, B, C) were acceptable and comparable in both cases. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect