气相爆轰反应中纳米TiO<sub>2</sub>颗粒的动态收集及微观生长机制

赵铁军; 王自法; 闫鸿浩; 王小红; 李晓杰

doi:10.11858/gywlxb.20210746

气相爆轰反应中纳米TiO₂颗粒的动态收集及微观生长机制

doi: 10.11858/gywlxb.20210746

赵铁军^{1, 2,},
王自法^1,*, ,,
闫鸿浩^2,*, ,,
王小红²,
李晓杰²

1.
河南大学土木建筑学院，河南开封　475004
2.
大连理工大学工程力学系，辽宁大连　116024

基金项目: 国家自然科学基金（11672068）

详细信息

作者简介:
赵铁军（1990－），男，博士，讲师，主要从事爆炸加工及电磁吸波研究. E-mail：tiejun_zhao@henu.edu.cn

通讯作者:
王自法（1965－），男，博士，教授，主要从事地震损伤及大数据分析研究. E-mail：zf_wang@henu.edu.cn

闫鸿浩（1974－），男，博士，教授，主要从事爆炸加工及工程爆破理论研究. E-mail：yanhh@dlut.edu.cn

中图分类号: O389
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出版历程
- 收稿日期: 2021-03-15
- 修回日期: 2021-04-07

Dynamic Collection and Micro-Growth Mechanism of TiO₂ Nanoparticles in Gaseous Detonation Reaction

ZHAO Tiejun^{1, 2
,},
WANG Zifa^{1,*
, ,},
YAN Honghao^{2,*
, ,},
WANG Xiaohong²,
LI Xiaojie²

1.
School of Civil Engineering and Architecture, Henan University, Kaifeng 475004, Henan, China
2.
Department of Engineering Mechanics, Dalian University of Technology, Dalian 116024, Liaoning, China

摘要

摘要: 在气相爆轰制备纳米TiO₂实验中，将设计的可移动纳米粉体收集网台内置于爆轰管内，收集到了爆轰反应过程中生成的纳米TiO₂，首次采用实验的方法探讨了气相爆轰制备纳米颗粒的生长机制。经分析发现，网台上与爆轰管壁收集的粉体为金红石相与锐钛矿相TiO₂，且网台上TiO₂的粒径明显小于管壁上收集的TiO₂粒径。网台到爆轰管尾端的距离对颗粒尺寸影响非常显著，距离越近，纳米TiO₂的粒径越小。结合爆轰波/冲击波在爆轰管中的传播规律，基于实验观察，进一步揭示了气相爆轰合成纳米颗粒的生长机制。
- 气相爆轰法 /
- 生长机制 /
- 动态收集 /
- 纳米颗粒 /
- 二氧化钛
Abstract: During the preparation of nano TiO₂ particles via the gaseous detonation method, a portable nano-powder collection platform was located inside the gaseous detonation tube where the nano-TiO₂ powders were collected based on the detonation reaction. The growth mechanism of gaseous detonation preparing nanoparticles was investigated experimentally for the first time. The results demonstrated that the TiO₂ powders collected from platform and detonation tube wall consisted of rutile and anatase phases, and the particle size of TiO₂ from platform is much smaller than that of tube wall. The particle size was significantly affected by the distance from platform to the end of detonation tube, and the closer the distance, the smaller the TiO₂ particle size. The growth mechanism of nanoparticles prepared via gaseous detonation method was revealed based on the theory of detonation/shock wave propagation and experimental observation in detonation tube.
- gaseous detonation method /
- growth mechanism /
- dynamic collection /
- nano particles /
- TiO₂

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图 1 气相爆轰管示意图

Figure 1. Schematic diagram of gaseous detonation tube

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图 2 纳米材料收集装置示意图

Figure 2. Schematic diagram of nano-material collection device

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图 3 爆轰管内收集的纳米粉体的XRD谱

Figure 3. XRD pattern of nano powders collected from gaseous detonation tube

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图 4 气相爆轰制备的纳米粉体的TEM图像：(a)显示了无可移动收集网台时气相爆轰管收集的纳米颗粒，(b)、(c)、(d)分别显示了可移动收集网台距爆轰管尾端160、320和640 mm时收集的纳米颗粒

Figure 4. TEM images of nano powders prepared by gaseous detonation: (a) Nano powders collected from gaseous detonation tube without collection device; (b), (c), (d) Nano powders on the removable nano powder collection platform at 160, 320, 640 mm away from the end of gaseous detonation tube

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图 5 氢-氧爆轰反应的高速摄影图像

Figure 5. Photos on the hydrogen-oxygen detonation reaction by the high-speed photography

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图 6 爆轰管内爆轰波传播及纳米颗粒生长示意图

Figure 6. Schematic diagram of detonation wave propagation and nanoparticle growth in detonation tube

(a. Electric blasting; b. Detonation wave passing through the platform; c. First reflection of shock wave; d. Second reflection of shock wave.)

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气相爆轰反应中纳米TiO2颗粒的动态收集及微观生长机制

doi: 10.11858/gywlxb.20210746

作者简介: 赵铁军（1990－），男，博士，讲师，主要从事爆炸加工及电磁吸波研究. E-mail：tiejun_zhao@henu.edu.cn

通讯作者: 王自法（1965－），男，博士，教授，主要从事地震损伤及大数据分析研究. E-mail：zf_wang@henu.edu.cn 闫鸿浩（1974－），男，博士，教授，主要从事爆炸加工及工程爆破理论研究. E-mail：yanhh@dlut.edu.cn

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Dynamic Collection and Micro-Growth Mechanism of TiO2 Nanoparticles in Gaseous Detonation Reaction

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目录

气相爆轰反应中纳米TiO₂颗粒的动态收集及微观生长机制

作者简介:
赵铁军（1990－），男，博士，讲师，主要从事爆炸加工及电磁吸波研究. E-mail：tiejun_zhao@henu.edu.cn

通讯作者:
王自法（1965－），男，博士，教授，主要从事地震损伤及大数据分析研究. E-mail：zf_wang@henu.edu.cn

闫鸿浩（1974－），男，博士，教授，主要从事爆炸加工及工程爆破理论研究. E-mail：yanhh@dlut.edu.cn

Dynamic Collection and Micro-Growth Mechanism of TiO₂ Nanoparticles in Gaseous Detonation Reaction