Studies on the structural, quantitative and semi-quantitative analyses of NiO-GDC nanocomposites
A simultaneous analysis of the crystallite size and strain of xNiO·(1 - x)GDC nanopowders prepared in stoichiometric proportions of x = 0, 0.1, 0.2... to 1 was performed by a self-sustained combustion (SC) process and calcination of the thus-synthesized nanopowders at 600 °C. The nanopowders were ex...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2016 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/143308 |
| Acceso en línea: | http://hdl.handle.net/10261/143308 |
| Access Level: | acceso abierto |
| Palabra clave: | NiO-GDC nanocomposites powder X-ray diffraction Nickel oxide X-ray fluorescence |
| Sumario: | A simultaneous analysis of the crystallite size and strain of xNiO·(1 - x)GDC nanopowders prepared in stoichiometric proportions of x = 0, 0.1, 0.2... to 1 was performed by a self-sustained combustion (SC) process and calcination of the thus-synthesized nanopowders at 600 °C. The nanopowders were examined by powder X-ray diffraction (XRD) pattern using two approaches: integral breadth of multiple peaks (multi-line) with Pearson VII (PVII), and pattern analysis of powders through total adjustment of the diffraction peaks with the double-Voigt (V-V) method. The synthesis route and stoichiometric variation allowed a quantitative study using the global setting profile with Rietveld refinement and semi-quantitative analysis by X-ray fluorescence (XRF) of nickel oxide (NiO) and gadolinium doped ceria (GDC) phases in the as-prepared and the calcined samples. The investigation of the microstructures of the nanopowders was further supported by high-resolution transmission electron microscopy (HR-TEM) and scanning electronic microscopy (SEM) with energy dispersive X-ray spectroscopy (EDS). |
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