Abstract
Capacitive deionization (CDI) is a promising technology for water 0. The electrode material plays a vital role in electrosorption capacity. Its porous nanostructure can promote capacitive deionization performance. Here, a “one-pot” synthesis of p-phenylenediamine- or benzidine- (DAB) functionalized graphene (DAB-mGO) was achieved using graphene oxide (GO) as a precursor by simultaneous nucleophilic addition, an amide reaction and an electrostatic self-assembly technique. DAB-mGO exhibits a significantly increased conductivity, specific surface area and pore volume compared with GO, which indicates that it can be used as a CDI electrode material for desalination in brackish water. DAB-mGO130 that was obtained at 130 °C exhibited electrosorption capacities of 7.88, 8.02 and 13.55 mg/g in Na+, Mg2+, Ca2+ solutions, respectively, at 1.4 V. These values are ~1.3–1.5 times higher than commercial activated carbon. These observations indicate that the simple organic functionalization of GO is an effective approach to increase the CDI performance because of the generation of useful porous nanostructures. A rational combination of organic molecules and inorganic GO can be used to fabricate environmental and economical CDI electrode for application in CDI and energy storage.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
