| 针状TiO2锐钛矿晶粒溶胶的制备、结构及形成机理研究 |
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| 引用本文： | 戈磊,徐明霞,方海波.针状TiO2锐钛矿晶粒溶胶的制备、结构及形成机理研究[J].无机化学学报,2005,21(3):394-398. |
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| 作者姓名： | 戈磊 徐明霞 方海波 |
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| 作者单位： | 先进陶瓷与加工技术教育部重点实验室,天津大学材料科学与工程学院,天津,300072 |
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| 基金项目： | 博士点基金项目(No.20030056001)资助 |
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| 摘 要： | The PTA sol was prepared using titanyl sulfate(TiOSO4), peroxide (H2O2) and ammonia (NH3·H2O) as raw materials. The semitransparent, light yellow AS(autoclaved sol) with ultra-fine needle-like anatase crystals was synthesized by autoclaving the PTA sol at 80～100 ℃ for different times. The anatase crystals were needle-like and 80 nm in length, 20～30 nm in diameter. The FTIR, XRD, SEM were used to analyse the chemical structure, properties of the AS and influencing factors during the sol preparation. The mechanism model of the AS formation was established based on the inorganic and crystal structural chemistry. The PTA molecules were decomposed to form Ti4+ under hydrothermal conditions and the Ti4+ were hydrated with water to get Ti(OH)4(OH2)2]0, a growing units of the anatase crystals. The appearance of the needle-like anatase crystals and the anatase precipitate are also explained in this paper.
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| 关 键 词： | 过氧钛酸溶胶 锐钛矿晶粒溶胶 水热反应 反应机理 |
| 文章编号： | 1001-4861(2005)03-0394-05 |
| 收稿时间： | 2004/7/26 0:00:00 |
| 修稿时间： | 2004年7月26日 |
Study on Preparation, Structure and Forming Mechanism of the Needle-like TiO2 Anatase Crystals Sol |
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| GE Lei,XU Ming-Xia and FANG Hai-Bo.Study on Preparation, Structure and Forming Mechanism of the Needle-like TiO2 Anatase Crystals Sol[J].Chinese Journal of Inorganic Chemistry,2005,21(3):394-398. |
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| Authors: | GE Lei XU Ming-Xia and FANG Hai-Bo |
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| Institution: | Key Laboratory for advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University Tianjin 300072,Key Laboratory for advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University Tianjin 300072 and Key Laboratory for advanced Ceramics and Machining Technology of Ministry of Education, School of Materials Science and Engineering, Tianjin University Tianjin 300072 |
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| Abstract: | |
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| Keywords: | peroxo titanic acid sol anatase crystals sol hydrothermal reaction reactive mechanism |
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