Kinetic investigation of carbon nanotube deposition by DC electrophoretic technique

In this paper, kinetics of DC electrophoretic deposition EPD of carbon nanotubes CNTs is investigated. Carbon nanotubes suspended in pure ethanol with addition of magnesium nitrate was used as deposition media. The effect of main EPD parameters such as deposition time, applied voltage and the CNT concentration on deposit yield was investigated. The variation of current density vs. time and the effect of magnetic stirring were also examined. The results are in good agreement with Hamaker´s law and the deposit yield increases with voltage and CNT concentration but there is a deviation from linear trend in longer deposition times. Stirring could compensate some of this deviation but increases the current density fluctuations.