Synthesis of non-agglomerated Ba0.77Ca0.23TiO3 nanopowders by a modified polymeric precursor method
In this work, we have studied the influence of the pH on the synthesis and structural properties of the Ba0.77Ca0.23TiO3 nanopowders synthesized by a modified polymeric precursor method, in order to achieve non-agglomerated powders. Synthesis, morphology, thermal reactions, crystallite and average p...
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| Veröffentlicht in: | Journal of sol-gel science and technology 2007-05, Vol.42 (2), p.173-179 |
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| creator | DA SILVA, Ronaldo Santos BERNARDI, Maria Ines Basso HERNANDES, Antonio Carlos |
| description | In this work, we have studied the influence of the pH on the synthesis and structural properties of the Ba0.77Ca0.23TiO3 nanopowders synthesized by a modified polymeric precursor method, in order to achieve non-agglomerated powders. Synthesis, morphology, thermal reactions, crystallite and average particle size of the synthesized powders were investigated through thermal analysis (DTA/TG), X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM) and Infrared spectroscopy. In summary, Ba0.77Ca0.23TiO3 nanopowders were synthesized for the first time at a relative low temperature (500 °C). It was also found that the alkalinity and acidity of the solution presented a great influence on the powder properties. The best results were obtained from solutions with pH = 8.5 and 11 whose nanopowders presented weakly agglomerate, with homogeneous particle size and a narrow size distribution (30–40 nm). This behavior could be explained based on the FT-IR results in which it was possible to see the increased of the chelation in higher pHs. |
| doi_str_mv | 10.1007/s10971-007-1554-6 |
| format | Article |
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Synthesis, morphology, thermal reactions, crystallite and average particle size of the synthesized powders were investigated through thermal analysis (DTA/TG), X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM) and Infrared spectroscopy. In summary, Ba0.77Ca0.23TiO3 nanopowders were synthesized for the first time at a relative low temperature (500 °C). It was also found that the alkalinity and acidity of the solution presented a great influence on the powder properties. The best results were obtained from solutions with pH = 8.5 and 11 whose nanopowders presented weakly agglomerate, with homogeneous particle size and a narrow size distribution (30–40 nm). This behavior could be explained based on the FT-IR results in which it was possible to see the increased of the chelation in higher pHs.</description><identifier>ISSN: 0928-0707</identifier><identifier>EISSN: 1573-4846</identifier><identifier>DOI: 10.1007/s10971-007-1554-6</identifier><language>eng</language><publisher>Heidelberg: Springer</publisher><subject>Agglomeration ; Alkalinity ; Chelation ; Chemical synthesis ; Chemistry ; Colloidal gels. Colloidal sols ; Colloidal state and disperse state ; Crystallites ; Differential thermal analysis ; Electron microscopes ; Emission analysis ; Exact sciences and technology ; Field emission microscopy ; General and physical chemistry ; Morphology ; Particle size ; Particle size distribution ; Physical and chemical studies. Granulometry. Electrokinetic phenomena ; Prepolymers ; X-ray diffraction</subject><ispartof>Journal of sol-gel science and technology, 2007-05, Vol.42 (2), p.173-179</ispartof><rights>2007 INIST-CNRS</rights><rights>Journal of Sol-Gel Science and Technology is a copyright of Springer, (2007). All Rights Reserved.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c264t-e60f62592a05ce6db5b10fb93b2cf0179ccf47f0c9e46c0f0424d886cf6822993</citedby><cites>FETCH-LOGICAL-c264t-e60f62592a05ce6db5b10fb93b2cf0179ccf47f0c9e46c0f0424d886cf6822993</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27922,27923</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=18647864$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>DA SILVA, Ronaldo Santos</creatorcontrib><creatorcontrib>BERNARDI, Maria Ines Basso</creatorcontrib><creatorcontrib>HERNANDES, Antonio Carlos</creatorcontrib><title>Synthesis of non-agglomerated Ba0.77Ca0.23TiO3 nanopowders by a modified polymeric precursor method</title><title>Journal of sol-gel science and technology</title><description>In this work, we have studied the influence of the pH on the synthesis and structural properties of the Ba0.77Ca0.23TiO3 nanopowders synthesized by a modified polymeric precursor method, in order to achieve non-agglomerated powders. Synthesis, morphology, thermal reactions, crystallite and average particle size of the synthesized powders were investigated through thermal analysis (DTA/TG), X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM) and Infrared spectroscopy. In summary, Ba0.77Ca0.23TiO3 nanopowders were synthesized for the first time at a relative low temperature (500 °C). It was also found that the alkalinity and acidity of the solution presented a great influence on the powder properties. The best results were obtained from solutions with pH = 8.5 and 11 whose nanopowders presented weakly agglomerate, with homogeneous particle size and a narrow size distribution (30–40 nm). This behavior could be explained based on the FT-IR results in which it was possible to see the increased of the chelation in higher pHs.</description><subject>Agglomeration</subject><subject>Alkalinity</subject><subject>Chelation</subject><subject>Chemical synthesis</subject><subject>Chemistry</subject><subject>Colloidal gels. Colloidal sols</subject><subject>Colloidal state and disperse state</subject><subject>Crystallites</subject><subject>Differential thermal analysis</subject><subject>Electron microscopes</subject><subject>Emission analysis</subject><subject>Exact sciences and technology</subject><subject>Field emission microscopy</subject><subject>General and physical chemistry</subject><subject>Morphology</subject><subject>Particle size</subject><subject>Particle size distribution</subject><subject>Physical and chemical studies. Granulometry. 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Colloidal sols</topic><topic>Colloidal state and disperse state</topic><topic>Crystallites</topic><topic>Differential thermal analysis</topic><topic>Electron microscopes</topic><topic>Emission analysis</topic><topic>Exact sciences and technology</topic><topic>Field emission microscopy</topic><topic>General and physical chemistry</topic><topic>Morphology</topic><topic>Particle size</topic><topic>Particle size distribution</topic><topic>Physical and chemical studies. Granulometry. 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Synthesis, morphology, thermal reactions, crystallite and average particle size of the synthesized powders were investigated through thermal analysis (DTA/TG), X-ray diffraction (XRD), field emission scanning electron microscope (FE-SEM) and Infrared spectroscopy. In summary, Ba0.77Ca0.23TiO3 nanopowders were synthesized for the first time at a relative low temperature (500 °C). It was also found that the alkalinity and acidity of the solution presented a great influence on the powder properties. The best results were obtained from solutions with pH = 8.5 and 11 whose nanopowders presented weakly agglomerate, with homogeneous particle size and a narrow size distribution (30–40 nm). This behavior could be explained based on the FT-IR results in which it was possible to see the increased of the chelation in higher pHs.</abstract><cop>Heidelberg</cop><pub>Springer</pub><doi>10.1007/s10971-007-1554-6</doi><tpages>7</tpages></addata></record> |
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| subjects | Agglomeration Alkalinity Chelation Chemical synthesis Chemistry Colloidal gels. Colloidal sols Colloidal state and disperse state Crystallites Differential thermal analysis Electron microscopes Emission analysis Exact sciences and technology Field emission microscopy General and physical chemistry Morphology Particle size Particle size distribution Physical and chemical studies. Granulometry. Electrokinetic phenomena Prepolymers X-ray diffraction |
| title | Synthesis of non-agglomerated Ba0.77Ca0.23TiO3 nanopowders by a modified polymeric precursor method |
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