A rapid hydrothermal synthesis route for nanocrystalline SrZrO3 using reactive precursors

✍ Scribed by Anjali A. Athawale; Asha Chandwadkar; P. Karandikar; Malini Bapat

• Book ID: 104062083
• Publisher: Elsevier Science
• Year: 2005
• Tongue: English
• Weight: 330 KB
• Volume: 119
• Category: Article
• ISSN: 0921-5107
• DOI: 10.1016/j.mseb.2005.01.007

✦ Synopsis

Synthesis of nanocrystalline, orthorhombic (space group Pnma) SrZrO 3 was achieved using appropriate molar proportions of nitrate salts of strontium and zirconium as precursors. Formation of SrZrO 3 (SZ) was facilitated hydrothermally in time period as less as half-an-hour, in aqueous medium with alkaline pH as confirmed by XRD. Sample characterization was performed by FT-IR spectroscopy, powder XRD, SEM, TEM and DSC. The results have been explained by proposing a suitable reaction mechanism based on the step-wise analysis of the reaction intermediates using FT-IR as well as XRD. A double cation hydroxide composite formation is anticipated that under hydrothermal conditions results in the formation of SrZrO 3 . Morphology of the samples was determined with the help of SEM and TEM. The particle size distribution as seen from the TEM micrograph lies in the range of 15-25 nm. Heats of reaction for different decomposition steps were obtained by DSC.