Cai P-F, Su C-J, Chang W-T, Chang F-C, Peng C-Y, Sun I-W, Wei Y-L, Jou C-J, Wang H Paul
Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
Department of Chemistry, National Cheng-Kung University, Tainan 70101, Taiwan.
Mar Pollut Bull. 2014 Aug 30;85(2):733-7. doi: 10.1016/j.marpolbul.2014.05.020. Epub 2014 Jun 10.
Drinking water shortage has become worse in recent decades. A new capacitive deionization (CDI) method for increasing water supplies through the effective desalination of seawater has been developed. Silver as nano Ag and Ag@C which was prepared by carbonization of the Ag(+)-β-cyclodextrin complex at 573 K for 30 min can add the antimicrobial function into the CDI process. The Ag@C and Ag nanoparticles dispersed on reduced graphene oxide (Ag@C/rGO and nano Ag/rGO) were used as the CDI electrodes. The nano Ag/rGO and Ag@C/rGO electrodes can reduce the charging resistant, and enhance the electrosorption capability. Better CDI efficiencies with the nano Ag/rGO and Ag@C/rGO electrodes can therefore be obtained. When reversed the voltage, the electrodes can be recovered up to 90% within 5 min. This work presents the feasibility for the nano Ag and Ag@C on rGO electrodes applied in CDI process to produce drinking water from seawater or saline water.
近几十年来，饮用水短缺问题愈发严重。一种通过有效淡化海水来增加供水的新型电容去离子化（CDI）方法已被开发出来。银以纳米银和Ag@C的形式存在，Ag@C是通过将Ag(+)-β-环糊精络合物在573 K下碳化30分钟制备而成，它可以为CDI过程增添抗菌功能。分散在还原氧化石墨烯上的Ag@C和银纳米颗粒（Ag@C/rGO和纳米Ag/rGO）被用作CDI电极。纳米Ag/rGO和Ag@C/rGO电极可以降低充电电阻，并增强电吸附能力。因此，使用纳米Ag/rGO和Ag@C/rGO电极可以获得更好的CDI效率。当电压反转时，电极在5分钟内可恢复高达90%。这项工作展示了rGO电极上的纳米银和Ag@C应用于CDI过程以从海水或盐水中生产饮用水的可行性。
