This review addresses water treatment using thin-film nanocomposite (TFN) membranes incorporated with various quantum dots (QDs), focusing heavily on dye removal and membrane antifouling. QDs are zero-dimensional nanomaterials that have been incorporated into the selective layer or support layer of nanofiltration (NF) membranes to increase membrane permeance while retaining high selectivity. Various preparation methods, including interfacial polymerization (IP), nonsolvent-induced phase separation (NIPS), vacuum filtration, layer-by-layer (LbL), and spin coating, are discussed with their advantages and disadvantages. Carbon-based QDs, including graphene quantum dots (GQDs), graphene oxide quantum dots (GOQDs), and carbon quantum dots (CQDs), have high hydrophilicity and excellent functionalizability, which enable fine control over porosity, thickness, repulsiveness, wettability, and fouling resistance. The low dimensionality of QDs also endows membranes with excellent anti-biofouling properties through oxidative stress and abundant edge contacts at the liquid/membrane interface. Some carbon-based QDs and metal QDs also enable photocatalytic dye degradation for enhanced water purification.
|Number of pages||14|
|Journal||Journal of Industrial and Engineering Chemistry|
|Publication status||Published - 2023 Feb 25|
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation (NRF) of South Korea, funded by the Ministry of Science and ICT ((2017R1D1A1B06028030) and the Material & Component Technology Development Program (20010846, Development of nano sized biofilter and module for virus removal) funded by the Ministry of Trade, Industry & Energy (MOTIE, Korea).
© 2022 The Korean Society of Industrial and Engineering Chemistry
All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)