傳統與微坡等低溫水熱方式合成鈦酸鋇的因素探討;Factors on Low Temperature Synthesis of fine BaTiO3 by Conventional and Microwave heating

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Title:	傳統與微坡等低溫水熱方式合成鈦酸鋇的因素探討;Factors on Low Temperature Synthesis of fine BaTiO3 by Conventional and Microwave heating
Authors:	黃原裕;Huang,Yuan-yu
Contributors:	化學工程與材料工程研究所
Keywords:	低溫材料;microwave
Date:	2012-07-31
Issue Date:	2012-09-11 18:12:47 (UTC+8)
Publisher:	國立中央大學
Abstract:	將預先合成之氫氧化鈦與氫氧化鋇使用濕式加熱法於低於100度C下合成出鈦酸鋇粉體。兩種不同的加熱方式，傳統加熱和微波加熱。由RAMAN分析可以知道我們的粉體是tetragonal相的鈦酸鋇。由XRD上觀察到的晶粒尺寸為20nm。濕式加熱法配合均質機加熱或微波，生成的鈦酸鋇可以穩定懸浮於IPA和酒精中。利用珠磨系統後可以使粒子尺寸更為均一。我們也使用內標法來計算我們的結晶產率，發現了最好合成完全結晶的鈦酸鋇方式。Ultra-fine BaTiO3 powders were synthesized from the wet synthesis of Ba(OH)2.8H2O and freshly prepared titanium hydroxide at less than 100°C. Two different heating schemes, the conventional and the microwave, were employed. The Raman analysis suggested that the particles are tetragonal BaTiO3. The XRD analysis the grain size by Scherrer equation is about 20nm. With the help of homogenizer or microwave in wet conventional heating step, the produced BaTiO3 can be colloid in IPA, ethanol in a long time without precipitation. and using wet bead milling to uniform the particle size. We also use internal standard in XRD analysis to discuss the crystallinity, and we use it to find which process is better to produce BaTiO3.
Appears in Collections:	[National Central University Department of Chemical & Materials Engineering] Electronic Thesis & Dissertation

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