Author/Authors :
Cai، نويسنده , , P.-F. and Su، نويسنده , , C.-J. and Chang، نويسنده , , W.-T. and Chang، نويسنده , , F.-C. and Peng، نويسنده , , C.-Y. and Sun، نويسنده , , I-W. and Wei، نويسنده , , Y.-L. and Jou، نويسنده , , C.-J. and Wang، نويسنده , , H.Paul، نويسنده ,
Abstract :
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.
Keywords :
Capacitive deionization , graphene , Seawater , Ag@C , Saline water
