Thin-film nanocomposite reverse osmosis membranes with enhanced antibacterial resistance by incorporating p-aminophenol-modified graphene oxide

Zhang, Yan; Ruan, Hao; Guo, Changmeng; Liao, Junbin; Shen, Jiangnan; Gao, Congjie

doi:10.1016/j.seppur.2019.116017

Cited by 70 publications

(22 citation statements)

References 56 publications

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“…In contrast, GO-PDA showed high dispersion in all solvents except in hexane with average dispersibility. The high dispersibility of GO-PDA in polar and nonpolar solvents expands its potential uses for various applications over the pristine GO including surface functionalization of RO and NF membranes [8,63], anticorrosive coatings [64], conductive inks [65], and oil recovery [66]. Figure 12 presents the optical micrographs of GO and GO-PDA dispersion in DIW with a low concentration (0.02 mg/mL).…”

Section: Structural Properties Of Go and Go-pdamentioning

confidence: 99%

“…Aminated GO NPs were considered as a promising nanofiller in various membrane processes like reverse osmosis (RO), forward osmosis (FO), nanofiltration (NF) and ultrafiltration (UF). In a recent study, Zhang et al [8] investigated the effect of p-aminophenol-functionalized GO embedding into thin-film nanocomposite RO membranes (TFN-RO) and reported a remarkable increase in water flux compared to bare membranes (by 24.5%) and high NaCl rejection of 99.7%. Further, TFN membranes incorporating the aminated GO exhibited higher antibacterial activity against Escherichia coli (96.78%) compared to those incorporating pristine GO (90.64%).…”

Section: Introductionmentioning

confidence: 99%

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Polydopamine Functionalized Graphene Oxide as Membrane Nanofiller: Spectral and Structural Studies

2021

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High-degree functionalization of graphene oxide (GO) nanoparticles (NPs) using polydopamine (PDA) was conducted to produce polydopamine functionalized graphene oxide nanoparticles (GO-PDA NPs). Aiming to explore their potential use as nanofiller in membrane separation processes, the spectral and structural properties of GO-PDA NPs were comprehensively analyzed. GO NPs were first prepared by the oxidation of graphite via a modified Hummers method. The obtained GO NPs were then functionalized with PDA using a GO:PDA ratio of 1:2 to obtain highly aminated GO NPs. The structural change was evaluated using XRD, FTIR-UATR, Raman spectroscopy, SEM and TEM. Several bands have emerged in the FTIR spectra of GO-PDA attributed to the amine groups of PDA confirming the high functionalization degree of GO NPs. Raman spectra and XRD patterns showed different crystalline structures and defects and higher interlayer spacing of GO-PDA. The change in elemental compositions was confirmed by XPS and CHNSO elemental analysis and showed an emerging N 1s core-level in the GO-PDA survey spectra corresponding to the amine groups of PDA. GO-PDA NPs showed better dispersibility in polar and nonpolar solvents expanding their potential utilization for different purposes. Furthermore, GO and GO-PDA-coated membranes were prepared via pressure-assisted self-assembly technique (PAS) using low concentrations of NPs (1 wt. %). Contact angle measurements showed excellent hydrophilic properties of GO-PDA with an average contact angle of (27.8°).

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Section: Structural Properties Of Go and Go-pdamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Polydopamine Functionalized Graphene Oxide as Membrane Nanofiller: Spectral and Structural Studies

2021

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“…46 This facilitated the fabrication of TFN RO membranes incorporated with p-aminophenol-modified GO (mGO) into the PA layer (Table S1, ESI, † entry 6). 54 The membrane incorporated with mGO at 0.003 wt% showed enhanced water permeance by 24.6% compared to the control TFC membrane, while maintaining a high rejection of 99.7% for NaCl. The water permeance and salt rejection exhibited initial increase and then declined as the loading of mGO was increased.…”

Section: Go Enriched Tfn Membranesmentioning

confidence: 89%

“…9,85 For instance, incorporation of mGO nanosheets comprehensively reduces the diffusion rate of MPD molecules into the organic phase. 54 The combined effect of steric hindrances and chemical interactions of the functionalities on the nanosheets impacts the reaction rate between MPD and TMC. The carboxyl and hydroxyl groups of the mGO structure particularly also interact with TMC, affecting the IP reaction.…”

Section: Impact Of 2d Nanosheets On Pa Layer and Membrane Performancementioning

confidence: 99%

“…2 (a) Cross-sectional SEM images of control and TFN membranes incorporated with 0.002 wt%, 0.003 wt% and 0.005 wt% mGO respectively (1-4), Adapted with permission. 54 Copyright 2019 Elsevier. (b) SEM surface morphologies of control and TFN membranes incorporated with 0.005 wt%, 0.02 wt% and 0.05 wt% MoS 2 respectively (1-4), Adapted with permission.…”

Section: Reviewmentioning

confidence: 99%

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2D nanosheet enabled thin film nanocomposite membranes for freshwater production – a review

et al. 2021

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Antibiofouling Thin‐Film Nanocomposite Membranes for Sustainable Water Purification

Pang

Meier‐Haack

Huang³

et al. 2021

Advanced Sustainable Systems

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Membrane technology provides a reliable and powerful solution to combat the global water crisis by producing fresh water through sustainable desalination. However, the decline in system performance due to membrane biofouling is a limitation and significant efforts have been made to explore fouling control mechanisms and develop simple methods to inhibit or eliminate membrane fouling. Nanotechnology has increased the number of options for the development of antibiofouling membranes by incorporating nanoparticles within the polyamide layer to produce a thin‐film nanocomposite (TFN) structure. This review presents recent advances in the preparation of antifouling TFN membranes and incorporation of different nanoparticles into the design. The review also discusses the strategies and mechanisms for reducing membrane fouling and proposes a future outlook for the field.

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Thin-film nanocomposite reverse osmosis membranes with enhanced antibacterial resistance by incorporating p-aminophenol-modified graphene oxide

Cited by 70 publications

References 56 publications

Polydopamine Functionalized Graphene Oxide as Membrane Nanofiller: Spectral and Structural Studies

Polydopamine Functionalized Graphene Oxide as Membrane Nanofiller: Spectral and Structural Studies

2D nanosheet enabled thin film nanocomposite membranes for freshwater production – a review

Antibiofouling Thin‐Film Nanocomposite Membranes for Sustainable Water Purification

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