进气条件对TiO_2纳米颗粒晶型与粒径的影响  

Effect of Operating Conditions on TiO_2 Nano-particle Sizeand Crystal Form

作　　者：史跃岗[1] 陈石[1] 谢洪勇[2] 张薇[3] 

机构地区：[1]大连理工大学能源与动力学院,辽宁大连116024 [2]上海第二工业大学城市建设与环境工程学院,上海201209 [3]大连理工大学化工学院,辽宁大连116012

出　　处：《材料工程》2008年第10期308-311,共4页Journal of Materials Engineering

摘　　要：采用火焰CVD法,在丙烷/空气扩散火焰中氧化前驱物(TiCl4)制备纳米二氧化钛颗粒。对不同进气条件下所生成TiO2纳米颗粒的粒径与晶型进行研究。在实验中共讨论了4种不同的进气条件。结果发现丙烷与空气流速决定火焰的温度;随着载气流速的升高,金红石型TiO2颗粒的含量降低,但是粒径大小几乎没有什么变化;而TiCl4流速对晶型含量的影响不大,TiCl4流速越高,颗粒粒径越大。The CVD method is used to produce TiO2 nano-particles in the propane-air diffusion flame. The effect of different operating conditions on size and crystal form is investigated. There are four different operating conditions analyzed. The results show that temperature is influenced mainly by the flow rate of propane and air; besides the higher the flow rate of carrier gas is, the lower the content of rutile is, while the particle size is little changed; meanwhile the influence of the flow rate of TiCl4 on crystal content is negligible and particle size is in proportion to the flow rate of TICl4.

关 键 词：TiO2颗粒 颗粒尺寸 晶型 

分 类 号：TB383[一般工业技术—材料科学与工程] TB44