Transformation of Barium–Titanium Chloro–Alkoxide Compound to BaTiO3 Nanoparticles by BaCl2 Elimination

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• 作者：Magdalena Kosińska-Kl?hn ; ?ukasz John ; Anna Dr?g-Jarz?bek ; Józef Utko ; Rafa? Petrus ; Lucjan B. Jerzykiewicz ; Piotr Sobota
• 刊名：Inorganic Chemistry
• 出版年：2014
• 出版时间：February 3, 2014
• 年：2014
• 卷：53
• 期：3
• 页码：1630-1636
• 全文大小：485K
• ISSN：1520-510X

文摘

In this Article, we present how the molecular precursor of binary oxide material having an excess of alkali earth metal can be transformed to the highly phase pure BaTiOb>3b> perovskite. Here, we synthesized and compared two barium鈥搕itanium complexes with and without chloride ligands to determine the influences of different ligands on the phase purity of binary oxide nanoparticles. We prepared two barium鈥搕itanium complexes, i.e., [Bab>4b>Tib>2b>(渭b>6b>-O)(OCHb>2b>CHb>2b>OCHb>3b>)b>10b>(HOCHb>2b>CHb>2b>OCHb>3b>)b>2b>(HOOCCPhb>3b>)b>4b>] (<b>1b>) and [Bab>4b>Tib>2b>(渭b>6b>-O)(渭b>3b>,畏b>2b>-OCHb>2b>CHb>2b>OCHb>3b>)b>8b>(渭-OCHb>2b>CHb>2b>OCHb>3b>)b>2b>(渭-HOCHb>2b>CHb>2b>OCHb>3b>)b>4b>Clb>4b>] (<b>2b>). The barium鈥搕itanium precursors were characterized using elemental analysis, infrared and nuclear magnetic resonance spectroscopies, and single-crystal X-ray structural analysis, and their thermal decomposition products were compared. The complex <b>1b> decomposed at 800 掳C to give a mixture of BaTiOb>3b> and Bab>2b>TiOb>4b>, whereas <b>2b> gave a BaClb>2b>/BaTiOb>3b> mixture. Particles of submicrometer size (30鈥?0 nm) were obtained after leaching of BaClb>2b> from the raw powder using deionized water. Preliminary studies of barium titanate doped with Eu³⁺ sintered at 900 掳C showed that the dominant luminescence band arose from the strong electric dipole transition, ⁵Db>0b>鈥?sup>7Fb>2b>.