Kinetic Investigation of Carbon Nanotube Deposition by DC ‎Electrophoretic Technique

I ‎ n this paper, kinetics of DC ‎electrophoretic deposition (EPD) ‎of carbon nanotubes (CNTs) are ‎investigated. Suspension of carbon ‎nanotubes 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 CNTs ‎concentration on deposit yield ‎were investigated. The variation of ‎current density vs. time and the ‎effect of magnetic stirring were ‎also examined. The results are in ‎good agreement with Hamakerʹs ‎law and the deposit yield increases ‎with increasing of applied voltage ‎and CNTs 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. ‎