Nanopore creation in graphene at the nanoscale for water desalination

Creating nanopores in graphene is a powerful tool for engineering its properties. Nanopores in graphene tune their electrical, optical, magnetic, and mechanical properties. However, controlling nanopores formation at the nanoscale level remains a significant challenge. We report an easy method to co...

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Bibliographic Details
Published in:arXiv.org 2023-05
Main Authors: Sidi Abdelmajid Ait Abdelkader, Benabdallah, Ismail, Amlieh, Mohammed, Abdelouahad El Fatimy
Format: Article
Language:English
Subjects:
Argon
Control methods
Controllability
Desalination
Graphene
Magnetic properties
Magnetron sputtering
Mechanical properties
Optical properties
Raman spectra
Silicon dioxide
Substrates
Water purification
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Summary:Creating nanopores in graphene is a powerful tool for engineering its properties. Nanopores in graphene tune their electrical, optical, magnetic, and mechanical properties. However, controlling nanopores formation at the nanoscale level remains a significant challenge. We report an easy method to control nanopore sizes using argon-plasma magnetron sputtering. By calculating and measuring Raman spectra, we show that the nano-pores in graphene are controllable and size-tunable. Furthermore, we report that the graphene Raman mode around 1450 cm-1, which was attributed to the substrate effect, is due to nanopores. We also propose here a novel graphene device-based water filtration. Our proposed concept of two graphene electrodes with nanopores on the substrate (SiC and SiO2) makes it possible to have the highest permeability value, keeping almost 100 % salt rejection and improving its mechanical properties. These reported results are essential for developing water desalination membranes based on graphene devices.
ISSN:2331-8422