Journal
ADVANCED MATERIALS TECHNOLOGIES
Volume 7, Issue 8, Pages -Publisher
WILEY
DOI: 10.1002/admt.202101513
Keywords
activated carbon; capacitive deionization; functionalization; graphene oxide
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Funding
- Politecnico di Torino within the CRUI-CARE Agreement
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A novel functionalized graphene oxide (fGO) is proposed for water desalination in this study. The fGO is obtained through functionalization and coating to create a porous electrode, which shows remarkable improvement in desalination performance. These findings lay the groundwork for future research.
In this study, a novel functionalized graphene oxide (fGO) is proposed for application in water desalination. The fGO is obtained with a simple and scalable method. Pristine GO is functionalized with (2-(acryloyloxy)ethyl)trimethylammonium through a two-step functionalization. Then, it is mixed with activated carbon and coated onto a metallic current collector. Material characterization techniques such as electron microscopy, thermal analyses, and infrared spectroscopy are employed to study the physical and chemical structures of the proposed materials. This process provides a porous electrode useful for capacitive deionization (CDI). The desalination performance is compared to the performance of bare activated carbons, showing a remarkable improvement. The final device reaches a value of around 17 mg g(-1) of salt removal, with a charge efficiency of 98%. The findings from this study lay the groundwork for future research, contributing in increasing the existing knowledge on materials for CDI.
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