School of Environmental Science and Engineering, Gwangju Institute of Science and Technology (GIST), Buk-gu, Gwangju, Republic of Korea.
Water Res. 2011 Nov 1;45(17):5375-80. doi: 10.1016/j.watres.2011.06.028. Epub 2011 Jul 3.
A noble electrode for capacitive deionization (CDI) was prepared by embedding ion exchanger onto the surface of a carbon electrode to practice membrane capacitive deionization (MCDI). Bromomethylated poly (2, 6-dimethyl-1, 4-phenylene oxide) (BPPO) was sprayed on carbon cloth followed by sulfonation and amination to form cation exchange and anion exchange layers, respectively. The ion exchange layers were examined by Scanning electron microscopy (SEM) and Fourier transform infrared spectrometer (FT-IR). The SEM image showed that the woven carbon cloth was well coated and connected with BPPO. The FT-IR spectrum revealed that sulfonic and amine functional groups were attached on the cationexchange and anionexchange electrodes, respectively. The advantages of the developed carbon electrodes have been successively demonstrated in a batch and a continuous mode CDI operations without ion exchange membranes for salt removal using 100 mg/L NaCl solution.
一种用于电容去离子（CDI）的新型电极，是通过将离子交换剂嵌入到碳电极表面来制备的，以实现膜电容去离子（MCDI）。溴甲基化聚（2,6-二甲基-1,4-亚苯基氧化物）（BPPO）喷涂在碳纤维布上，然后进行磺化和胺化，分别形成阳离子交换层和阴离子交换层。通过扫描电子显微镜（SEM）和傅里叶变换红外光谱（FT-IR）对离子交换层进行了检查。SEM 图像显示，编织碳纤维布被很好地覆盖并与 BPPO 相连。FT-IR 光谱表明，磺酸基和胺基官能团分别附着在阳离子交换和阴离子交换电极上。所开发的碳电极的优势已在批处理和连续模式 CDI 操作中得到了证明，无需使用离子交换膜即可去除盐，使用的是 100mg/L 的 NaCl 溶液。
