Preparation of TiO2 nanoparticles by submerged arc nanoparticle synthesis system
Preparation of TiO2 nanoparticles by submerged arc nanoparticle synthesis system
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埋弧纳米粒子合成系统制备TiO2纳米粒子
DOI：
10.1016/j.jallcom.2009.10.215
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发表时间：
2010
影响因子：
6.2
通讯作者：
L. Chen
中科院分区：
文献类型：
--
作者：
L. Chen
研究了埋弧纳米粒子合成系统（SANSS）合成过程中工艺参数对纳米二氧化钛（TiO 2）粒子几何形貌的影响。合成过程包括在受控真空环境下通过在去离子液体中的埋弧蒸发纯钛棒，然后通过冷却系统快速淬火蒸发的钛气体，从而形成纳米晶粉末。实验结果表明，制备纳米粒子悬浮液的电流对合成的纳米粒子的尺寸、分布和表面球形度有显著影响，而其他工艺参数如脉冲宽度和去离子水温度对纳米粒子的几何性质也有一定影响。通过工艺分析选择的一组参数，可以合成平均粒径为65nm、尺寸差异为60nm、球形度为3.8%的纳米TiO2颗粒。
This study investigated the effects of process parameters on geometrical features of titanium dioxide (TiO2) nanoparticles synthesized by the submerged arc nanoparticle synthesis system (SANSS). The synthesis process involves vaporizing a pure titanium rod by a submerged arc in deionized liquid under a controlled vacuum environment, followed by rapid quenching of the vaporized titanium gas by a cooling system, thus forming nanocrystalline powders. Our experimental results revealed that the electric current for preparing the nanoparticle suspension had significant impact on the size, distribution and surface sphericity of the nanoparticles synthesized, while other process parameters including pulse duration and temperature of deionized water also had moderate influence on the geometrical properties. With the set of parameters selected through process analysis, TiO2nanoparticles having an average particle diameter of 65nm with a size disparity of 60nm and particle sphericity of 3.8% can be synthesized.