| 聚合凝胶法制备粉状纳米TiO_2的影响因素 |
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| 引用本文： | 郭澎湃,谢峰,曹伟,胡智武.聚合凝胶法制备粉状纳米TiO_2的影响因素[J].内江师范学院学报,2011,26(4):32-35. |
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| 作者姓名： | 郭澎湃 谢峰 曹伟 胡智武 |
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| 作者单位： | 1. 四川理工学院,材料与化学工程学院,四川,自贡,643000
2. 内江师范学院,四川,内江,641100 |
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| 基金项目： | 四川省教育厅自然科学重点研究课题 |
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| 摘 要： | 以钛酸丁酯为前驱物,无水乙醇为溶剂,冰醋酸为抑制剂,硝酸为催化剂在低温条件下制备纳米二氧化钛凝胶.通过定量分析得出优化工艺条件：V乙醇/V钛酸丁酯为6,V水/V钛酸丁酯为1,V冰醋酸/V钛酸丁酯为1,体系pH为3~4,凝胶时间为2~4h,煅烧温度为500°C,煅烧时间为2h.用激光粒度仪表征纳米TiO2颗粒平均粒径为800nm,用XRD表征计算晶粒粒径为25nm.
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| 关 键 词： | 纳米 二氧化钛 工艺条件 |
Influencing Factors in the Preparation of Nanometer TiO2Powder by Polymerized Sol-gel |
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| GUO Peng-pai,XIE Feng,CAO Wei,HU Zhi-wu.Influencing Factors in the Preparation of Nanometer TiO2Powder by Polymerized Sol-gel[J].Journal of Neijiang Teachers College,2011,26(4):32-35. |
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| Authors: | GUO Peng-pai XIE Feng CAO Wei HU Zhi-wu |
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| Institution: | 1.School of Material and Chemical Engineering,Sichuan University of Science and Engineering,Zigong,Sichuan 643000,China;2.Neijiang Normal University,Neijiang,Shichuan 641100,China) |
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| Abstract: | TiO2 sol was prepared by sol-gel method using tetrabutyl titanate as a precursor,absolute ethanol as a solvent,acetic acid as inhibitors,nitric acid as catalyst under low temperature conditions.A quantitative analysis finds that the optimum processing conditions for the preparation of nanoscaleTiO2 are when VC2H5（OH）： VTi（OC4H9）4 =6, VH2O： VTi（OC4H9）4 =1,VCH3COOH： VTi（OC4H9）4 =1,and the pH value of mixture is adjusted to between 3 and 4,the time of gel polymeration lasts nearly 3 hours,the calcinating time lasts for 2 hours under 500℃.The particles of nanometer titanium are 800nm in diameter when characterized by laser granulometer and 25nm on average when characterized by XRD. |
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| Keywords: | nanometer titanium dioxide processing condition |
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