title: Capacitive deionization of seawater effected by nano Ag and Ag@C on graphene.
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.
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
authors.forename: P-F
authors.initials: PF
authors.lastname: Cai
authors.affiliation: Department of Chemistry, National Cheng-Kung University, Tainan 70101, Taiwan.
authors.forename: C-J
authors.initials: CJ
authors.lastname: Su
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
authors.forename: W-T
authors.initials: WT
authors.lastname: Chang
authors.affiliation: The Experimental Forest, National Taiwan University, Chu-Shan 55750 Nan-Tou Hsien, Taiwan.
authors.forename: F-C
authors.initials: FC
authors.lastname: Chang
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan.
authors.forename: C-Y
authors.initials: CY
authors.lastname: Peng
authors.affiliation: Department of Chemistry, National Cheng-Kung University, Tainan 70101, Taiwan.
authors.forename: I-W
authors.initials: IW
authors.lastname: Sun
authors.affiliation: Department of Environmental Science and Engineering, Tunghai University, Taichung 407, Taiwan.
authors.forename: Y-L
authors.initials: YL
authors.lastname: Wei
authors.affiliation: Department of Safety, Health and Environmental Engineering, National Kaohsiung First University of Science and Technology, Kaohsiung 811, Taiwan.
authors.forename: C-J
authors.initials: CJ
authors.lastname: Jou
authors.affiliation: Department of Environmental Engineering, National Cheng Kung University, Tainan 70101, Taiwan. Electronic address: wanghp@mail.ncku.edu.tw.
authors.forename: H Paul
authors.initials: HP
authors.lastname: Wang
mesh_terms: D000890:Anti-Infective Agents / Q000737:chemistry*; D025802:Electric Capacitance; D017097:Electric Impedance; D004566:Electrodes; D004926:Escherichia coli / Q000378:metabolism; D006108:Graphite / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry*; D010087:Oxides / Q000737:chemistry; D012492:Salts; D012623:Seawater / Q000737:chemistry*; D012834:Silver / Q000737:chemistry*; D012965:Sodium Chloride / Q000032:analysis; D017550:Spectroscopy, Fourier Transform Infrared; D013696:Temperature; D018508:Water Purification / Q000379:methods; D014961:X-Ray Diffraction; D047392:beta-Cyclodextrins / Q000737:chemistry
chemical_list: D000890:Anti-Infective Agents; D010087:Oxides; D012492:Salts; D047392:beta-Cyclodextrins; D012834:Silver; D012965:Sodium Chloride; D006108:Graphite; C031215:betadex
keywords: Ag@C; Capacitive deionization; Graphene; Saline water; Seawater