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Freestanding Activated Carbon Nanocomposite Electrodes for Capacitive Deionization of Water
King Abdulaziz Univ, Ctr Nanotechnol, Jeddah 21589, Saudi Arabia.;King Abdulaziz Univ, Fac Sci, Phys Dept, Jeddah 21589, Saudi Arabia..
King Abdulaziz Univ, Ctr Nanotechnol, Jeddah 21589, Saudi Arabia..ORCID iD: 0000-0001-5451-2050
King Abdulaziz Univ, Ctr Nanotechnol, Jeddah 21589, Saudi Arabia..ORCID iD: 0000-0002-8233-7373
King Abdulaziz Univ, Ctr Nanotechnol, Jeddah 21589, Saudi Arabia.;King Abdulaziz Univ, Fac Sci, Phys Dept, Jeddah 21589, Saudi Arabia..
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2022 (English)In: Polymers, E-ISSN 2073-4360, Vol. 14, no 14, article id 2891Article in journal (Refereed) Published
Abstract [en]

Freshwater reserves are being polluted every day due to the industrial revolution. Man-made activities have adverse effects upon the ecosystem. It is thus the hour of need to explore newer technologies to save and purify water for the growing human population. Capacitive deionization (CDI) is being considered as an emerging technique for removal of excess ions to produce potable water including desalination. Herein, cost-effective activated carbon incorporated with carbon nanotubes (CNT) was used as a freestanding electrode. Further, the desalination efficiency of the designed electrodes was tuned by varying binder concentration, i.e., polyvinylidene difluoride (PVDF) in the activated carbon powder and CNT mixture. PVDF concentration of 5, 7.5, 10, and 12.5 wt% was selected to optimize the freestanding electrode formation and further applied for desalination of water. PVDF content affected the surface morphology, specific surface area, and functional groups of the freestanding electrodes. Moreover, the electrical conductivity and specific surface area changed with PVDF concentration, which ultimately affected the desalination capacity using the freestanding electrodes. This study paves the way to produce cost effective carbon-based freestanding electrodes for capacitive deionization and other applications including battery electrodes.

Place, publisher, year, edition, pages
MDPI AG , 2022. Vol. 14, no 14, article id 2891
Keywords [en]
freestanding electrode, activated carbon, carbon nanotubes, capacitive deionization, water desalination
National Category
Materials Chemistry
Identifiers
URN: urn:nbn:se:kth:diva-316298DOI: 10.3390/polym14142891ISI: 000832273200001PubMedID: 35890666Scopus ID: 2-s2.0-85137260160OAI: oai:DiVA.org:kth-316298DiVA, id: diva2:1686835
Note

QC 20220811

Available from: 2022-08-11 Created: 2022-08-11 Last updated: 2024-01-17Bibliographically approved

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Dutta, Joydeep

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