Synthesis of liquid arc-discharge carbon nanotube for applying in nano(bio)sensors
Jahanshahi, Mohsen; Raoof, Jahan-Bakhsh; Ardestani, Fatemeh; Hajizadeh, Solmaz; Jabari Seresht, Razieh
Islamic Republic of Iran

Carbon nanotubes (CNTs), generated by rolling single or several layers of graphite into a seamless and hollow cylinder, can be divided into multi-walled carbon nanotubes (MWNTs) and single-walled carbon nanotubes (SWNTs) based on the numbers of carbon atom layers of the wall of the nanotubes. Since its discovery in 1991, CNTs have been the subject of numerous investigations in chemical, physical and materials areas due to their novel structural, mechanical, electronic, and chemical properties. CNT which has been produced by different processes, i.e. arc-discharge and chemical vapor deposition (CVD), subjected to the electrochemical activation. First we synthesised ARC-discharge CNTs and purified them with modified acid treatment; in the next step the electrochemical properties of different CNTs includes ours were compared. ARC- discharge method was done in a liquid media. In such media, there are no complexities such as vacuum environment, inert gas, high temperature furnaces or heat exchange systems. Ni-Mo was used as a catalyst and 20 volt voltage applied. The effect of synthesized CNTs was compared with other available ARC-CNTs even in liquid or gas in electrochemical treatment on electrodes. The result shows that the synthesized CNTs with ARC-discharge in liquid media have a significant effect on electrochemical reactivity.
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