Laxman Karthik, Myint Myo Tay Zar, Bourdoucen Hadj, Dutta Joydeep
Chair in Nanotechnology, Water Research Center, Sultan Qaboos University , PO Box 33, Al-Khoudh, Muscat-123, Sultanate of Oman.
ACS Appl Mater Interfaces. 2014 Jul 9;6(13):10113-20. doi: 10.1021/am501041t. Epub 2014 Jun 26.
Electrodes composed of activated carbon cloth (ACC) coated with zinc oxide (ZnO) nanorods are compared with plain ACC electrodes, with respect to their desalination efficiency of a 17 mM NaCl solution at different applied potentials. Polarization of the ZnO nanorods increased the penetration depth and strength of the electric field between the electrodes, leading to an increase in the capacitance and charge efficiency at reduced input charge ratios. Uniform distribution of the electric field lines between two electrodes coated with ZnO nanorods led to faster ion adsorption rates, reduced the electrode saturation time, and increased the average desalination efficiency by ∼45% for all applied potentials. The electrodes were characterized for active surface area, capacitance from cyclic voltammetry, theoretical assessment of surface area utilization, and the magnitude of electric field force acting on an ion of unit charge for each potential.
将由涂有氧化锌（ZnO）纳米棒的活性炭布（ACC）制成的电极与普通ACC电极进行比较，考察它们在不同外加电位下对17 mM NaCl溶液的脱盐效率。ZnO纳米棒的极化增加了电极之间电场的穿透深度和强度，从而在输入电荷比降低的情况下提高了电容和电荷效率。涂有ZnO纳米棒的两个电极之间电场线的均匀分布导致更快的离子吸附速率，缩短了电极饱和时间，并且在所有外加电位下平均脱盐效率提高了约45%。对电极的活性表面积、循环伏安法测得的电容、表面积利用率的理论评估以及每个电位下作用于单位电荷离子的电场力大小进行了表征。
