| 纳米掺铁二氧化钛的sol-gel法制备与表征(Ⅰ)热重红外联用分析掺铁二氧化钛凝胶的热分解和晶化特性 |
| The Characterization and Preparation of Nano-scale Fe Doping TiO2 by Sol-gel Method(Ⅰ) The Crystallization and Thermal Decomposition Process of Fe Doping TiO2 Xerogel Powders using Thermal TG-IR Spectrometry |
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| 摘要: 本文通过热分析、红外联用和X射线衍射分析了不同煅烧温度下的纳米掺铁二氧化钛样品,研究了sol-gel方法制备的纯二氧化钛和掺铁二氧化钛干凝胶的热分解和晶化过程。结果表明,干凝胶有较为明显的两个阶段的热分解。在实验条件下得到的二氧化钛干凝胶粉为无定形,无定形二氧化钛加热晶化过程是一个持续的过程,没有明显的晶化温度。 |
| 关键词: sol-gel 热分析 晶粒度 |
| 基金项目: |
| Abstract: The pure and Fe doping TiO2 xerogel powders were prepared by sol-gel method. Thermal stability of the TiO2 xerogel powders were investigated in air by TG-DTA. At the several temperature elevating stages, the samples were submitted to IRanalyzing for the elucidation of decomposition process. The crystallization and phase transformation of the TiO2 xerogel powders, from amorphous to anatase and from anatase to rutile, were studied by X-ray diffraction. It was shown that the xerogel powders obtained were amorphous. Upon heating, the amorphous powders crystallized continuously. No crystallization temperature previously reported in the literature was observed. |
| Keywords: sol-gel thermal analysis grain size |
| 投稿时间：2000-06-12 修订日期：2000-08-28 |
| 摘要点击次数: 2047 |
| 全文下载次数: 2091 |
| 岳林海,刘清,徐铸德,水淼.纳米掺铁二氧化钛的sol-gel法制备与表征(Ⅰ)热重红外联用分析掺铁二氧化钛凝胶的热分解和晶化特性[J].无机化学学报,2000,16(6):933-938. |
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