Creation of novel nanomaterials by arc plasma in liquid with sonication

在水体系中采用电弧放电结合超声变幅杆的方法合成了碳洋葱和碳纳米管。在这一年，新开发和制造了一个新的系统，以实现这样的反应场。此外，还利用高速摄像机拍摄了水系统中电弧放电的高分辨率视频。在目前的研究结果中，还没有发现超声波处理对产物结构和性质的特殊影响，但这一结果为阐明碳纳米离子和碳纳米管的形成机理提供了重要信息。也就是说，碳纳米管和碳纳米管的形成发生在埋弧放电系统中出现的气泡的中心区域，而不是在靠近气液界面的区域。另外，在埋弧电极中加入钛酸钡，成功地合成了由钛酸钡衍生的纳米管作为新型纳米材料。

Carbon onions and carbon nanotubes were synthesized by arc discharge in water system combined with sonication horn. In this year, a new system were newly developed and fabricated to realized such reaction field. Furthermore, high speed camera was used to obtain high-resolution videos of the arc discharge in water system. In the current result, the special effect of the sonication to cause any change in the product structures and their properties has not been found. Nevertheless, this result gives important information to elucidate the formation mechanism of carbon nanooions and carbon nanotubes. Namely, the formation of carbon onoins and carbon nanotubes were taking place in the central zone in the bubbles appearing in the submerged arc discharge system, but not in the zone adjacent to gas-liquid interface. As additional result, nanotubes derived from barium tinanate was successfully synthesized as novel nanomaterials when barium titanate was put into the electrode in the submerged arc system.