Nonhydrolytic Sol-Gel Synthesis of Ba1-xSrxTiO3 Nanopowder

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• 作者：Xianghua Xie ; Yaming Dong ; Chaojie Chen ; and Lin Lin
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2005
• 出版时间：February 16, 2005
• 年：2005
• 卷：44
• 期：4
• 页码：811 - 815
• 全文大小：218K
• 年卷期：v.44,no.4(February 16, 2005)
• ISSN：1520-5045

文摘

A novel process for making nanopowders has been investigated by using the nonhydrolytic sol-gel synthesis (NHSGS) method, with which around 70% organic solvent can be recycled.Ba_1-xSr_xTiO₃ (BST) nanopowders, for example, were synthesized with the parent precursorsSr(CH₃COO)₂, Ba(CH₃COO)₂, Ti(n-C₄H₉O)₄, and glacial acetic acid. The properties of BST powderswere characterized by atomic force microscopy (AFM), transmission electron microscopy (TEM),laser scattering, and an Autosorb surface area analyzer. The mean size of primary BST particlesis around 30 nm, and the diameters of 50% BST agglomerates are less than 344 nm. With theNHSGS process the period of synthesis was greatly shortened and cost and pollution were largelyminimized as well. Furthermore, the NHSGS method can also be applied to the preparation ofPbZr_0.95Ti_0.05O₃ and PbZr_0.75Ti_0.25O₃ nanopowders.