Nanopore creation in graphene at the nanoscale for water desalination.

Résumé

Abstract 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 is only due to nanopores and was attributed to the substrate effect. Here, we also propose 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 a 100 % salt rejection and improving its mechanical properties. These reported results are essential for developing water desalination membranes based on graphene devices.

Citer ce document

Accès au document

Texte intégral en lecture en ligne, réservé aux abonnés SPHAERO et aux membres de l'institution. Se connecter

Auteur(s)

Statistiques

Consultations : 1

Téléchargements : 0