Journal
DESALINATION
Volume 451, Issue -, Pages 172-181Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.desal.2017.07.018
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Funding
- Singapore National Research Foundation [1301-IRIS-17]
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Membrane capacitive deionization (MCDI) is a technique that is derived from conventional capacitive deionization (CDI). Additional ion-exchange membranes are included in the MCDI cell to prevent ion-expulsion and improve cyclability. As it stands, MCDI represents the most feasible option for large scale desalination to take place. In this work, we investigate the desalination performance of a novel structured activated carbon material synthesized from the assembly of polyvinyl alcohol (PVA) on graphene oxide (GO). A hydrothermal treatment causes self -assembly of the PVA covered GO sheets and the product is a polymeric framework supported by reduced GO sheets. A further activation process by KOH produces the structured activated carbon (AC). These new structured ACs possess unique morphologies and exhibit high adsorption capacities (> 30 mg g(-1)) which far surpass traditional ACs.
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