Desalination effects of capacitive deionization (CDI) process was studied using TiO2/activated carbon electrode. In order to enhance the wettability of electrode and decrease a electrode resistance, TiO2 was coated on activated carbon. By means of TiO2 coating on activated carbon, electric double layer to adsorption content in CDI process was increased. It was identified from TEM, XRD, and XPS that the activated carbon based on TiO2 composite was fabricated successfully by means of sol-gel method. As a results of cyclic voltammetry and impedance, it was identified that TiO2/activated carbon electrode has more electric double later capacitance and less diffusion resistance than activated carbon. Also charge-discharge and ion conductivity profiles showed that the ion removal ratios of TiO2/activated carbon electrode in NaCl electrolyte of 1000 μS/cm more increased about 39% than that of activated carbon. In conclusion it was possible to identify that the carbon electrode coated TiO2 as electrode material was more effective than raw carbon electrode.
Desalination effects of capacitive deionization (CDI) process was studied using TiO2/activated carbon electrode. In order to enhance the wettability of electrode and decrease a electrode resistance, TiO2 was coated on activated carbon. By means of TiO2 coating on activated carbon, electric double layer to adsorption content in CDI process was increased. It was identified from TEM, XRD, and XPS that the activated carbon based on TiO2 composite was fabricated successfully by means of sol-gel method. As a results of cyclic voltammetry and impedance, it was identified that TiO2/activated carbon electrode has more electric double later capacitance and less diffusion resistance than activated carbon. Also charge-discharge and ion conductivity profiles showed that the ion removal ratios of TiO2/activated carbon electrode in NaCl electrolyte of 1000 μS/cm more increased about 39% than that of activated carbon. In conclusion it was possible to identify that the carbon electrode coated TiO2 as electrode material was more effective than raw carbon electrode.
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