纳米二氧化钛粉体的气相爆轰制备

欧阳欣; 闫鸿浩; 刘津开; 李晓杰; 曲艳东; 杜云燕

doi:10.11858/gywlxb.2007.04.008

纳米二氧化钛粉体的气相爆轰制备

doi: 10.11858/gywlxb.2007.04.008

1.
大连理工大学工程力学系工业装备结构分析国家重点实验室，辽宁大连 116023；
2.
大连交通大学数理系，辽宁大连 116028

详细信息

通讯作者:
欧阳欣

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出版历程
- 收稿日期: 2007-04-03
- 修回日期: 2007-04-24
- 刊出日期: 2007-12-05

Nano-Titanium Dioxide Synthesis Using Gaseous Detonation

1.
State Key Laboratory Structural Analysis for Industrial Equipment, Department of Engineering Mechanics, Dalian University of Technology, Dalian 116023, China;
2.
Department of Mathematic, Dalian Jiaotong University, Dalian 116028, China

More Information

Corresponding author: Ouyang Xin

摘要

摘要: 介绍了利用氢氧混合气体为原料、以四氯化钛为前驱体、气相爆轰制备纳米二氧化钛粉体的方法。利用XRD衍射结果分析证明，产物为金红石相和锐钛矿相的二氧化钛混晶，其晶粒尺度为纳米量级。通过XRD、SEM、TEM分析可以得出，粒子基本为球形，大部分粒子粒径为10~20 nm，也有少量的100 nm左右的粒子产生。分析后发现，反应发生在爆燃转爆轰的过程中和爆轰管中的湍流现象是导致大粒子产生的主要原因。在对在氢过量和氧过量两种状况下，对爆轰所产生的产物的形貌进行了对比，分析发现两种状况产生纳米二氧化钛粉末粒径分布和形貌并没有太大变化。
- 气相爆轰 /
- 合成 /
- 纳米二氧化钛
Abstract: TiO2 nanoparticles are prepared by detonation method in gas phase. In this experiment, titanium tetrachloride is used as a precursor, and premixed gas (O2 and H2) as energy. Properties of TiO2 ultrafine particles were studied by means of XRD, SEM and TEM. The results show that the powders which are globose are rutile and anatase phase, and particle sizes of the powders are within 10 and 20 nm. There are also some larger particles which are about 100 nm. It is found that the production of larger particles is contributed to the deflagration to detonation course and the turbulent of detonation to grow. In the paper, the property of particles synthesized under the over-H2 and over-O2 case were compared. The result showed that the morphology of particles produced by the two cases does not vary greatly.
- gaseous detonation /
- detonation synthesis /
- TiO2 nanoparticles

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参考文献(14)

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