| TiO2纳米微粒的溶胶-凝胶法制备及XRD分析 |
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| 引用本文： | 陈琦丽,唐超群,肖循.TiO2纳米微粒的溶胶-凝胶法制备及XRD分析[J].材料科学与工程学报,2002,20(2):224-226. |
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| 作者姓名： | 陈琦丽 唐超群 肖循 |
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| 作者单位： | 1. 华中科技大学物理系,湖北武汉;中国地质大学数理系,湖北武汉,430074
2. 华中科技大学物理系,湖北武汉 |
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| 摘 要： | 本文采用溶胶 凝胶法制备二氧化钛纳米微粒。用XRD分析了二氧化钛胶体经不同温度热处理后的晶粒粒径。分析表明温度在 4 73K时TiO2 微粒呈锐钛矿结构 ,粒径约为 5 5nm。在 6 73K以上TiO2 粒径迅速增大 ,微粒出现锐钛相与金红石相混晶结构。 973K时TiO2 微粒完全转化为金红石相。用晶界结构弛豫的观点解释粒径随热处理温度变化关系
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| 关 键 词： | 二氧化钛 溶胶凝胶 纳米微粒 晶界结构弛豫 |
| 文章编号： | 1004-793X(2002)02-0224-03 |
| 修稿时间： | 2001年11月7日 |
Sol-Gel Preparation Method and XRD Study of TiO2 Nanoparticles |
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| CHEN Qi\|li ,TANG Chao\|qun\,XAO Xun\.Sol-Gel Preparation Method and XRD Study of TiO2 Nanoparticles[J].Journal of Materials Science and Engineering,2002,20(2):224-226. |
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| Authors: | CHEN Qi\|li TANG Chao\|qun\ XAO Xun\ |
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| Affiliation: | CHEN Qi\|li 1,2,TANG Chao\|qun\+1,XAO Xun\+1 |
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| Abstract: | The TiO\-2 nanoparticles were prepared with Sol\|Gel method.The resulting materials have been characterized by XRD after heating treatment in different temperature.It was found that TiO\-2 fine particles appeared anatase structure with sized about 5\^5nm at 473K,and formed the composite structure of anatase and rutile at 673K when the grain size of TiO\-2 nanoparticles increased rapidly,and appeared rutile structure completely at 973K.The relationship between the grain size and the heating temperature of TiO\-2 nanoparticles was explained with the view of structural rallaxation of grain boundary. |
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| Keywords: | TiO\-2 sol\|gel nanoparticles structural rallaxation of grain boundary |
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