Graphene oxide based ion-sieving membranes for water purification
Typ
Examensarbete för masterexamen
Master's Thesis
Master's Thesis
Program
Nanotechnology (MPNAT), MSc
Publicerad
2024
Författare
Macialowicz, Michal
Modellbyggare
Tidskriftstitel
ISSN
Volymtitel
Utgivare
Sammanfattning
Graphene oxide (GO), a promising two-dimensional (2D) material, has attracted
much attention in membrane filtration techniques such as selective ion filtration
and contaminant removal in water treatment. However, its versatility is limited by
the fact that GO-based membranes tend to swell when submerged in water. This
swelling behaviour will lead to an expansion of the 2D interlayer space, resulting
in their inability to block particles in subnano-scale. In this thesis, I studied the
modification of GO membrane to fine-tune the 2D interlayer distance and tested the
ion-selectivity behaviour of modified GO membrane in lithium ion extraction applications.
The impact of functional groups on GO membrane was evaluated by X-ray
diffraction, Raman spectroscopy, and scanning electron microscopy measurements.
This work will provide a simple strategy in the development of emerging filtering
materials for water purification applications.
Beskrivning
Ämne/nyckelord
2D-nanomaterials , graphene oxide , ion sieving , water treatment