2023/05/19 by Sidi Abdelmajid Ait Abdelkader, Ismail Benabdallah, Abdelkader, Sidi Abdelmajid Ait +5 · 1 citation
Engineering · Environmental Science · Materials Science · #FOS: Physical sciences #Graphene research and applications #Materials Science (cond-mat.mtrl-sci) #Membrane Separation Technologies #Mesoscale and Nanoscale Physics (cond-mat.mes-hall) #Nanopore and Nanochannel Transport Studies
paper · pdf · doi:10.48550/arxiv.2305.11970
openalex publication_date 2023/05/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.