| 水解沉淀法制备纳米TiO2及其表征 |
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| 引用本文： | 方世杰,徐明霞,郝俊杰,汪成建.水解沉淀法制备纳米TiO2及其表征[J].天津大学学报(英文版),2002,8(2):79-82. |
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| 作者姓名： | 方世杰 徐明霞 郝俊杰 汪成建 |
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| 作者单位： | 天津大学材料科学与工程学院,天津，300072 |
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| 基金项目： | NationalNaturalScienceFoundationofChina(No.50 0 72 0 1 4 )，NaturalScienceFoundationofTianjin (No.0 1 360 381 1 ) |
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| 摘 要： | 以TiOSO4为原料制备纳米TiO2 并对其进行XRD、BET、TEM研究 .结果表明 ,pH值与热处理温度对晶粒大小及晶型结构有很大影响 .在 5 0 0℃热处理条件下 ,pH =5时的纳米粉末比表面积为 10 1.3 9m2 ·g-1,粒径 10nm左右 ;pH =10时的纳米粉末比表面积为 95 .48m2 ·g-1,粒径 3 0nm左右 .在 75 0℃时的金红石晶型转变对粒径的长大有很大的促进作用 .
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| 关 键 词： | 纳米TiO2 水解沉淀法 pH 晶型转变 |
Preparation and Characterization of Nanometer TiO2 by Hydrolysis Precipitation Method |
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| FANG Shi-jie,XU Ming-xia,HAO Jun-jie,WANG Cheng-jian.Preparation and Characterization of Nanometer TiO2 by Hydrolysis Precipitation Method[J].Transactions of Tianjin University,2002,8(2):79-82. |
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| Authors: | FANG Shi-jie XU Ming-xia HAO Jun-jie WANG Cheng-jian |
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| Abstract: | Nanometer TiO2 powders were obtained from TiOSO4 and studied by XRD, TEM and BET. The result indicated that pH and heat treatment temperature have great effects on their grain size and crystal phase structure. Annealed at 500 ℃, nanometer TiO2 with a specific surface area of101.39 m2*g-1 and a grain size about 10 nm were obtained(pH=5); and with a specific surface area of 95.48 m2*g-1 and a grain size about 30 nm were obtained(pH=10). The research indicated that crystal phase transformation of rutile at 750 ℃ made great promotion in grain size growth. |
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| Keywords: | nanometer Tio 2 hydrolysis precipitation method pH crystal phase transformation |
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