出版日期：2011-02-01 00:00:00

著者：Yu, Hsuan-Fu; Guo, Yu-Man

單位：淡江大學化學工程與材料工程學系

出版者：Amsterdam: Elsevier BV

著錄名稱、卷期、頁數：Journal of Alloys and Compounds 509(5), pp.1984-1988

摘要：Crystalline LaAlO3 nanoparticles were synthesized at relative low temperatures, using a citrate-precursor technique. La(NO3)3, Al(NO3)3, and C3H4(OH)(COOH)3, in a molar ratio of 1:1:1, were dissolved in deionized water. NH4OH was used to adjust the aqueous solution to pH 7. After drying, the citrate precursors were charred at 350 °C, followed by calcination at different temperatures, in air or oxygen atmosphere. The thermochemical properties of the resultant particles were analyzed using thermogravimetric and differential thermal analysis, X-ray diffractometry, infrared spectroscopy, scanning electron microscopy, and transmission electron microscopy. Effects of calcination temperature and heating atmosphere on the formation of crystalline LaAlO3 nanoparticles were investigated. In O2 atmosphere, clacining the citrate-derived charred solid precursor at 700 °C for 3 h can decompose all intermediates to produce pure LaAlO3 nanoparticles (particle sizes ≤ 100 nm) with an average crystallite size of about 24 nm and possessing high sinterability.

關鍵字：Lanthanum aluminate; Citrate precursor method; Thermal analysis; Calcination atmosphere; Ceramic synthesis

語言：en

ISSN：0925-8388

期刊性質：國外

收錄於：SCI EI

通訊作者：Yu, Hsuan-Fu

國別：NLD

出版型式：紙本