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利用微波輔助法合成鈦酸鈷粉末及其鑑定 = Microwave-assis...

國立高雄大學應用化學系碩士班

利用微波輔助法合成鈦酸鈷粉末及其鑑定 = Microwave-assisted Synthesis and Characterization of Cobalt Titanate Powders

紀錄類型:	書目-語言資料,印刷品 : 單行本
並列題名:	Microwave-assisted Synthesis and Characterization of Cobalt Titanate Powders
作者:	彭英傑,
其他團體作者:	國立高雄大學
出版地:	[高雄市]
出版者:	撰者;
出版年:	民99[2010]
面頁冊數:	114面圖，表 : 30公分;
標題:	鈦酸鈷
標題:	CoTiO3
電子資源:	http://handle.ncl.edu.tw/11296/ndltd/72422276677672160639
摘要註:	因鈦酸鈷(Cobalt titanate；CoTiO3) 具有高介電性質、特殊的電子結構、光吸收特性和電荷傳輸性質，所以它可被用於半導體元件、化學催化劑和氣體感測器等。傳統上合成CoTiO3 的方法為固-固相的合成反應，且需要 1000°C 以上的高溫。許多的研究試圖解決此製備溫度過高的問題，但在降低製成溫度的同時又浮現了易生成二氧化鈦 (Titaninm dioxide；TiO2) 與氧化鈷(Cobalt oxide；Co3O4) 不純物之問題。因此製備純鈦酸鈷成為一重大之挑戰。此篇研究為生成CoTiO3，以醋酸鈷四水合物 (Cobalt acetate tetrahydrate；Co(CH3COO)2．4H2O)、異丙氧基鈦 (Titanium(IV) isopropoxide；Ti(OC3H7)4) 與二甲氧基乙醇 (2-methoxyethanol；CH3OCH2CH2OH) 所製備出之前驅液，藉由微波合成法 170°C 下，大幅地降低了CoTiO3 之合成溫度。並利用 X-ray 繞射 (XRD) 、化學分析電子儀(ESCA) 、顯微拉曼光譜儀 (Micro Raman) 與穿透式電子顯微鏡 (TEM) 等分析證明之。結果顯示：在 170°C 微波反應溫度下，即可得到具結晶性的CoTiO3 粉末。同時研究結果顯示加入不同的界面活性劑可有效控制 CoTiO3 粉末型態，此方法可將大幅地提昇CoTiO3 的應用性。 Cobalt titanate (CoTiO3) possessed high dielectric properties, special electronic structure, optical absorption properties and charge transport properties, so it can apply in semiconductor devices, chemical catalysts and gas sensors etc. Traditionally, CoTiO3 is synthesized by solid state reaction whose temperature is required above 1000°C. Many researches attemped to resolve this problem, but reducing synthesis temperature tends to generate impurities of titaninm dioxide and cobalt oxide. Therefore, it is a challenge to produce of pure cobalt titanate.This research is the synthesis of CoTiO3 which used the precursor solution prepared by cobalt acetate tetrahydrate、Titanium isopropoxide and 2-methoxyethanol with microwave reaction at 170°C. Based on this method, the synthesis temperature was reduced significantly. XRD, ESCA, micro Raman and TEM are employed to confirm the experiments. The result shows the CoTiO3 crystalline powder was obtained in the 170°C microwave reaction temperature. In addition, it also shows that the CoTiO3 powder patterns were controled effectively by adding different surfactants. This method could greatly enhance the application of CoTiO3.

利用微波輔助法合成鈦酸鈷粉末及其鑑定 = Microwave-assisted Synthesis and Characterization of Cobalt Titanate Powders
彭, 英傑

利用微波輔助法合成鈦酸鈷粉末及其鑑定 = Microwave-assisted Synthesis and Characterization of Cobalt Titanate Powders / 彭英傑撰 - [高雄市] : 撰者, 民99[2010]. - 114面 ; 圖，表 ; 30公分.
參考書目：面.
鈦酸鈷CoTiO3

利用微波輔助法合成鈦酸鈷粉末及其鑑定 = Microwave-assisted Synthesis and Characterization of Cobalt Titanate Powders
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330 $a 因鈦酸鈷(Cobalt titanate；CoTiO3) 具有高介電性質、特殊的電子結構、光吸收特性和電荷傳輸性質，所以它可被用於半導體元件、化學催化劑和氣體感測器等。傳統上合成CoTiO3 的方法為固-固相的合成反應，且需要 1000°C 以上的高溫。許多的研究試圖解決此製備溫度過高的問題，但在降低製成溫度的同時又浮現了易生成二氧化鈦 (Titaninm dioxide；TiO2) 與氧化鈷(Cobalt oxide；Co3O4) 不純物之問題。因此製備純鈦酸鈷成為一重大之挑戰。此篇研究為生成CoTiO3，以醋酸鈷四水合物 (Cobalt acetate tetrahydrate；Co(CH3COO)2．4H2O)、異丙氧基鈦 (Titanium(IV) isopropoxide；Ti(OC3H7)4) 與二甲氧基乙醇 (2-methoxyethanol；CH3OCH2CH2OH) 所製備出之前驅液，藉由微波合成法 170°C 下，大幅地降低了CoTiO3 之合成溫度。並利用 X-ray 繞射 (XRD) 、化學分析電子儀(ESCA) 、顯微拉曼光譜儀 (Micro Raman) 與穿透式電子顯微鏡 (TEM) 等分析證明之。結果顯示：在 170°C 微波反應溫度下，即可得到具結晶性的CoTiO3 粉末。同時研究結果顯示加入不同的界面活性劑可有效控制 CoTiO3 粉末型態，此方法可將大幅地提昇CoTiO3 的應用性。 Cobalt titanate (CoTiO3) possessed high dielectric properties, special electronic structure, optical absorption properties and charge transport properties, so it can apply in semiconductor devices, chemical catalysts and gas sensors etc. Traditionally, CoTiO3 is synthesized by solid state reaction whose temperature is required above 1000°C. Many researches attemped to resolve this problem, but reducing synthesis temperature tends to generate impurities of titaninm dioxide and cobalt oxide. Therefore, it is a challenge to produce of pure cobalt titanate.This research is the synthesis of CoTiO3 which used the precursor solution prepared by cobalt acetate tetrahydrate、Titanium isopropoxide and 2-methoxyethanol with microwave reaction at 170°C. Based on this method, the synthesis temperature was reduced significantly. XRD, ESCA, micro Raman and TEM are employed to confirm the experiments. The result shows the CoTiO3 crystalline powder was obtained in the 170°C microwave reaction temperature. In addition, it also shows that the CoTiO3 powder patterns were controled effectively by adding different surfactants. This method could greatly enhance the application of CoTiO3.
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