Two-dimensional WS2 membranes constructed on different substrates for efficient dye desalination

Han, Jiaojiao; Zhang, Qiu-Yue; Huang, Min-Yue; Chen, Yan; Yan, Xi; Lang, Wan‐Zhong

doi:10.1016/j.desal.2020.114380

Cited by 32 publications

(9 citation statements)

References 44 publications

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“…Figure and Table S2 compare the separation performance of the M 2 membrane with those of other membranes reported in available literature. ,− Compared to other reported membranes, M 2 membrane had a superior separation factor (∼10 3 ), which could achieve an efficient recovery of dyes from the dye/salt mixtures. In addition, the permeability of the M 2 membrane tested with the dye/salt mixtures is in the range of 153–174 L m –2 h –1 bar –1 , which is also superior to the most of loose nanofiltration membranes.…”

Section: Resultsmentioning

confidence: 92%

Aramid Nanofiber Membranes Reinforced by MXene Nanosheets for Recovery of Dyes from Textile Wastewater

Dai

Zhou

et al. 2021

ACS Appl. Nano Mater.

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Efficient recovery of dyes from textile wastewaters using membrane-based technologies calls for membranes with low rejection of salts but high rejection of dyes. In this study, we intercalated the rigid 2D-ultrathin MXene (Ti3C2T x ) nanosheet into the loose framework assembled by 1D aramid nanofibers and obtained a MXene-reinforced aramid nanofiber (ANF) membrane. The optimized MXene-reinforced ANF membrane (20 wt % MXene loading) exhibited a high selectivity of dye/salt, that is, 99.1 ± 0.3% for Alcian Blue, 96.1 ± 2.4% for Congo Red, 98.6 ± 0.9% for Rose Bengal, and extremely low rejection of salts (<0.2%) at a concentration of 5 g L–1 of NaCl with separation factors of 826, 1068, and 758 for Alcian Blue, Congo Red, and Rose Bengal, respectively. Moreover, the membrane permeability could reach 195.3 ± 6.5 L m–2 h–1 bar–1. The MXene-reinforced ANF membrane demonstrated a superior separation performance to most of the other reported membranes for dye/salt fraction. Mechanistic investigation showed that the reinforced rigidity of the membrane by the intercalated MXene was the main mechanism for the enhanced permeability and selectivity of the MXene/ANF composite membrane (that is, a nanochannel of 2.34 nm was maintained for the MXene/ANF composite membrane after filtration while the nanochannel of the ANF membrane was increased from 2.27 to 2.43 nm). The results highlight that the nanofibrous membranes reinforced by rigid 2D materials are promising for an effective separation of dyes and salts in textile wastewaters.

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Section: Resultsmentioning

confidence: 92%

Aramid Nanofiber Membranes Reinforced by MXene Nanosheets for Recovery of Dyes from Textile Wastewater

Dai

Zhou

et al. 2021

ACS Appl. Nano Mater.

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“…7a, Table S1, ESI †) in the literature. [36][37][38][39][40][41] The PBC/PPSM film showed a permeance of 1980 AE 89 L h À1 m À2 bar À1 and 100% rejection for both the positively charged dye RhB and the negatively charged dye AB. It can be assumed that the charge effect has little effect on retention and permeance.…”

Section: Resultsmentioning

confidence: 99%

Absolute film separation of dyes/salts and emulsions with a superhigh water permeance through graded nanofluidic channels

et al. 2022

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“…This feature increases the researchers’ desire to study thin-film membranes. − Various nanomaterials have been employed to amend the performance of thin-film membranes in numerous studies. During the past decade, some compounds of the zeolite family and transition metal dichalcogenides (TMDs) recently have been of interest to some researchers as membrane modification agents. − However, the study of some of these compounds, especially nanocomposites consisting of these two categories, has been neglected.…”

Section: Introductionmentioning

confidence: 99%

High-Performance Novel MoS₂@Zeolite X Nanocomposite-Modified Thin-Film Nanocomposite Forward Osmosis Membranes: A Study of Desalination and Antifouling Performance

Amini,

Nikkhoo,

Bagherzadeh

et al. 2023

ACS Appl. Mater. Interfaces

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Novel thin-film nanocomposite (TFN) membranes modified by the MoS 2 @Zeolite X nanocomposite were made and studied for desalination by the forward osmosis (FO) method. Herein, MoS 2 @Zeolite X nanocomposite (MoS 2 @ Z) and zeolite X particles are integrated into the polyamide (PA) selective layer of the TFN membranes, separately. The aim of this study is the synthesis of nanocomposites containing hydrophilic zeolite X particles with a modified surface and pore and improvement of their effective properties on desalination and antifouling performance. For this purpose, MoS 2 nanosheets with a high hydrophilicity were selected. The existence of polymer−matrix-compatible MoS 2 @Z inside the PA active layer caused the formation of a defect-free smooth surface with further channels within this layer that could increase the water flux and fouling resistance of the TFN membranes. The TFN-MZ 2 membrane (containing 0.01 wt % MoS 2 @Z) showed the top desalination performance in the FO process. In contrast to the pristine thin-film composite (TFC) and TFN-Z 2 membrane (containing 0.025 wt % zeolite X, the most optimal membrane among the zeolite-modified membranes), its water flux has increased by 2.6 and 1.8 times, respectively. Furthermore, in the fouling test, this optimal TFN-MZ 2 membrane with a flux decrement of 19.6% revealed an ∼2.2and 1.8-fold enhancement in antifouling tendency compared to the TFC and TFN-Z 2 , respectively. Also, based on the antibiofouling test, the water flux drop of 48.6% for the TFC membrane has reached 36.9% for the optimal membrane. Hence, this high-performance TFN-MZ 2 membrane shows good capability for commercial employment in FO desalination application.

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Two-dimensional WS2 membranes constructed on different substrates for efficient dye desalination

Cited by 32 publications

References 44 publications

Aramid Nanofiber Membranes Reinforced by MXene Nanosheets for Recovery of Dyes from Textile Wastewater

Aramid Nanofiber Membranes Reinforced by MXene Nanosheets for Recovery of Dyes from Textile Wastewater

Absolute film separation of dyes/salts and emulsions with a superhigh water permeance through graded nanofluidic channels

High-Performance Novel MoS₂@Zeolite X Nanocomposite-Modified Thin-Film Nanocomposite Forward Osmosis Membranes: A Study of Desalination and Antifouling Performance

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Two-dimensional WS2 membranes constructed on different substrates for efficient dye desalination

Cited by 32 publications

References 44 publications

Aramid Nanofiber Membranes Reinforced by MXene Nanosheets for Recovery of Dyes from Textile Wastewater

Aramid Nanofiber Membranes Reinforced by MXene Nanosheets for Recovery of Dyes from Textile Wastewater

Absolute film separation of dyes/salts and emulsions with a superhigh water permeance through graded nanofluidic channels

High-Performance Novel MoS2@Zeolite X Nanocomposite-Modified Thin-Film Nanocomposite Forward Osmosis Membranes: A Study of Desalination and Antifouling Performance

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Product

Resources

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High-Performance Novel MoS₂@Zeolite X Nanocomposite-Modified Thin-Film Nanocomposite Forward Osmosis Membranes: A Study of Desalination and Antifouling Performance