| 离心沉降光透法测定纳米TiO_2粉体粒径 |
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| 引用本文： | 赵金伟,袁敏,郑建明,陈光. 离心沉降光透法测定纳米TiO_2粉体粒径[J]. 分析仪器, 2011, 0(3): 48-51 |
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| 作者姓名： | 赵金伟 袁敏 郑建明 陈光 |
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| 作者单位： | 南京理工大学;江苏出入境检验检疫局; |
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| 基金项目： | 国家质检总局科研项目(2002IK077) |
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| 摘 要： | 采用NSKC-1D离心式光透仪研究了纳米TiO2粉体的粒径及其分布.研究结果表明超声波最佳分散时间为10～20min,选用50%水＋50%乙醇作为分散介质,以0.02%～0.08%的六偏磷酸钠作为分散剂,样品测定效果最佳,粒度分布符合正态分布规律;同时进行了11次平行实验,D50值的极差小于20nm。该方法准确、可靠、简便、快速。
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| 关 键 词： | 离心沉降光透法 纳米TiO2粉体 粒径 分散 |
Measurement of particle size of nano-TiO_2 powder by centrifugal photosedimentation |
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| Zhao Jinwei,Yuan Min,Zheng Jianming,Chen Guang. Measurement of particle size of nano-TiO_2 powder by centrifugal photosedimentation[J]. Analytical Instrumentation, 2011, 0(3): 48-51 |
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| Authors: | Zhao Jinwei Yuan Min Zheng Jianming Chen Guang |
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| Affiliation: | Zhao Jinwei1,2,Yuan Min2,Zheng Jianming2,Chen Guang1(1.Nanjing University of Science and Technology,Nanjing,210094,2.Jiangsu Engtry-Exit Inspection and Quarantine Bureau,21001) |
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| Abstract: | The particle size and distribution of nano-TiO2 powder were measured by NSKC-1D centrifugal photosedimeter.The effects of ultrasonic time,dispersive medium,and dispersant and its concentration on the measurement were investigated,and the best measurement conditions were established: ultrasonic time: 10~20min,dispersive medium: 50% water+50% ethanol;dispersant: 0.02%~0.08% sodium polyphosphate.The distribution of particle size is in agreement with normal distribution.The range of D50 value for 11 parallel te... |
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