Review on thin-film nanocomposite membranes with various quantum dots for water treatments

Andrew Kim, Seung Jae Moon, Jong Hak Kim, Rajkumar Patel

Research output: Contribution to journalReview articlepeer-review

7 Citations (Scopus)

Abstract

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.

Original languageEnglish
Pages (from-to)19-32
Number of pages14
JournalJournal of Industrial and Engineering Chemistry
Volume118
DOIs
Publication statusPublished - 2023 Feb 25

Bibliographical note

Publisher Copyright:
© 2022 The Korean Society of Industrial and Engineering Chemistry

All Science Journal Classification (ASJC) codes

  • General Chemical Engineering

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