Controlled synthesis of titanium dioxide nanoparticles in a modified diffusion flame reactor
Controlled synthesis of titanium dioxide nanoparticles in a modified diffusion flame reactor
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DOI：
10.1016/s0025-5408(01)00552-9
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发表时间：
2001-02-01
影响因子：
5.4
通讯作者：
Kim, SK
中科院分区：
文献类型：
--
作者：
Jang, HD;Kim, SK
在改进的扩散火焰反应器中，以四氯化钛（TiCl 4）为原料，通过氧化反应合成了纳米二氧化钛（TiO 2）。反应器使用由5个同心管组成的多端口扩散型燃烧器。火焰配置为（Ar + TiCl 4）/Ar/H-2/O-2/空气，每小时产生数十克的TiO 2纳米颗粒。对改进后的燃烧器出口扩散火焰的火焰特性进行了研究。四氯化钛浓度和流量的燃烧气体，如氧气，氢气和空气被选为关键的实验变量的颗粒尺寸和相组成的控制。所合成的纳米TiO 2平均粒径为10 ~ 30 nm，纳米TiO 2的质量分数为40 ~ 80%。(C)2001爱思唯尔科技有限公司版权所有。
Titanium dioxide (TiO2) nanoparticles were synthesized by the oxidation of titanium tetrachloride (TiCl4) in a modified diffusion flame reactor. The reactor utilized a multiport diffusion type burner composed of 5 concentric tubes. The flame configuration was (Ar + TiCl4)/Ar/H-2/O-2/air producing several tens of grams of TiO2 nanoparticles per hour. Flame characteristics of the diffusion flame at the modified burner outlet were investigated. TiCl4 concentration and flow rates of combustion gases such as oxygen, hydrogen and air were chosen as key experimental variables for the control of the particle size and phase composition. TiO2 nanoparticles ranged from 10 to 30 nm in average particle diameter, and the mass fraction of anatase synthesized was 40 to 80% in all experiments. (C) 2001 Elsevier Science Ltd. All rights reserved.