Synthesis and structural characterization of calcium titanate by spray pyrolysis method
| Autor: | Marcos Augusto Lima Nobre, L.P.M. Simões, Silvania Lanfredi, Fernando Storti, E. Djurado |
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| Přispěvatelé: | Universidade Estadual Paulista (Unesp), LEPMI |
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Inorganic chemistry Spray pyrolysis method chemistry.chemical_element Calcium titanate 02 engineering and technology Crystal structure Calcium 010402 general chemistry 01 natural sciences Calcium nitrate law.invention chemistry.chemical_compound law General Materials Science Chemical synthesis Crystallization Aqueous solution Mechanical Engineering 021001 nanoscience & nanotechnology Condensed Matter Physics Citric Acid Monohydrate Rietveld method 0104 chemical sciences chemistry Mechanics of Materials 0210 nano-technology Titanium |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| Popis: | Made available in DSpace on 2018-12-11T17:11:25Z (GMT). No. of bitstreams: 0 Previous issue date: 2017-08-15 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Single phase and crystalline calcium titanate exhibiting spherical particle was synthesized by spray pyrolysis method. Nanometric to submicrometric particle size was characterized by X-ray diffraction and scanning electron microscopy. Crystalline structure and its crystallographic parameters were investigated via Rietveld method. The spray was generated from aqueous solution. An acid solution was tailored to support titanium IV isopropoxide as source of titanium cation. The acid character of the solution is reached from addition of citric acid monohydrate. Calcium nitrate was used as source of calcium. The influence of the precursor solution concentration and furnace temperature on the crystallization phenomenon of the calcium titanate was investigated. CaTiO3 exhibits orthorhombic symmetry and space group Pbnm (a = 5.3862 Å, b = 5.4433 Å and c = 7.6440 Å, V = 224.11 Å3). Nanostructure development is discussed. São Paulo State University (Unesp) School of Technology and Sciences Presidente Prudente Laboratory of Composites and Ceramics Functional – LaCCeF, P.O Box 467 Univ. Grenoble Alpes LEPMI, 1130 rue de la Piscine, F-38402 St Martin d'Hères CNRS LEPMI São Paulo State University (Unesp) School of Technology and Sciences Presidente Prudente Laboratory of Composites and Ceramics Functional – LaCCeF, P.O Box 467 |
| Databáze: | OpenAIRE |
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