| 纳米二氧化钛粉末的溶胶-凝胶法合成及晶相转化 |
| The Synthesis of Nano-TiO2 Powder by Sol-Gel Method and the Phase Transformation |
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| 摘要: |
| 关键词: 溶胶-凝胶 纳米TiO2粉末 锐钛矿 金红石 |
| 基金项目: |
| Abstract: Nanosized TiO2 powder with anatase and rutile structures was synthesized by a sol-gel method using TiCl4 ethanol solution as a precursor.The grain size of TiO2 powder was about 63nm after the precursor was calcined at 600℃ for 2 hours .The experimental techniques of XRD,TEM and Particle Distribution were used to characterize the synthesized specimens. Various special effects were investigated for their contribution to crystal structure and the size of TiO2 powder .The formation of anatase as well as the rutile phase of TiO2 was indicted from the XRD when the reaction temperature was above 30℃ and when the sol was irradiated by infrared rays .However, an anatase TiO2 powder formed after the heat treatment of the dried gel in a temperature range from 300℃ to 500℃.Under the vacuum drying and with the calcined time below 3hours ,the anatase phase was gained .As well as with the increase of gelatinizing time, the anatase TiO2 powder was obtained. |
| Keywords: sol-gel TiO2 nanometer powder anatase rutile |
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| 摘要点击次数: 1300 |
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| 吴腊英,李长江.纳米二氧化钛粉末的溶胶-凝胶法合成及晶相转化[J].无机化学学报,2002,18(4):399-403. |
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