Self-cleaning Anti-fouling TiO2/Poly(aryl ether sulfone) Composite Ultrafiltration Membranes

Geng, Wenzhe; Jiang, Hongchuan; Xia, Yang; Feng, Yong; Wang, Xinyu; Geng, Zhi; Huo, Mingxin

doi:10.1007/s40242-019-8401-5

Cited by 4 publications

(2 citation statements)

References 36 publications

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“…It was found that the NH 2 -MIL-125/POD-COOH hybrid membranes displayed significantly reinforced tensile strength and Young’s modulus by integration of the NH 2 -MIL-125 nanofiller. The covalent bond between the NH 2 -MIL-125 nanofiller and POD-COOH matrix could result in strong interfacial interactions and high load transfer efficiency, leading to an obvious reinforcement effect of the NH 2 -MIL-125 nanofiller in the hybrid membranes. − Moreover, the addition of NH 2 -MIL-125 into the polymer matrix by covalent bonding inevitably resulted in a certain degree of branched structure among the polymer chains because of the chemical structure of the NH 2 -MIL-125 cluster containing more than one amino group. Hence, the branched structure of the hybrid membranes was likely to be another explanation for the improved mechanical properties.…”

Section: Resultsmentioning

confidence: 99%

High-Performance, Free-Standing Symmetric Hybrid Membranes for Osmotic Separation

Geng

Liang

Sun

et al. 2021

ACS Appl. Mater. Interfaces

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The internal concentration polarization (ICP) of asymmetric osmotic membranes with support layers greatly reduced membrane water permeability, therefore compromising membrane performance. In this study, a series of free-standing symmetric hybrid forward osmosis (FO) membranes without experiencing ICP were fabricated by covalently linking metal−organic framework (MOF) nanofillers with a polymer matrix. Owing to the introduction of MOFs, which allow only water permeation but reject salts by steric hindrance, the prepared hybrid membranes could approach the empirical permeability-selectivity trade-off. The optimized hybrid membrane displayed an outstanding water/Na 2 SO 4 selectivity of ∼1208.4 L mol −1 , compared with that of conventional membranes of ∼375.6 L mol −1 . Additionally, the fabricated hybrid membranes showed excellent mechanical robustness, maintaining structural integrity during the long-term FO separation of high-salinity solution. This work provides an effective methodology to fabricate high-performance, symmetric MOF-based membranes for osmotic separation processes such as seawater desalination and water purification.

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Section: Resultsmentioning

confidence: 99%

High-Performance, Free-Standing Symmetric Hybrid Membranes for Osmotic Separation

Geng

Liang

Sun

et al. 2021

ACS Appl. Mater. Interfaces

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“…Therefore, it is urgent to find a low-cost method to remove organic dyes from wastewater efficiently. Currently, thanks to the hard work of researchers, a lot of water purification technologies have been developed, such as coagulation-flocculation [14] , biochemical methods [15] , ion-exchange [16] , oxidation [17] , chlorination [18] , photocatalysis technology [19] , electrochemical processes [20] and adsorption [21] . Among these methods, adsorption is considered to be a promising technique, due to its low operating cost, renewable and high efficiency [22][23][24] .…”

Section: Introductionmentioning

confidence: 99%

Preparation of MnO2 Loaded Hydrothermal Carbon-coated Electrospun PAN Fiber Membranes for Highly Efficient Adsorption and Separation of Cationic Dye

Wang

Shen

et al. 2020

Chem. Res. Chin. Univ.

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Hydrothermal carbonaceous materials and MnO2 have been proved to be promising adsorbents to remove organic dyes from wastewater. In this study, flexible MnO2 loaded hydrothermal carbon-coated electrospun polyacrylonitrile(AC/MnO2/PAN) fiber membranes were fabricated by a facile one-step hydrothermal method and activated by NaOH solution. The composite fibers exhibited large adsorption capacity toward cationic dyes and excellent mechanical properties. The adsorption performance can be fitted well with pseudo-second-order model and Langmuir isotherm model. The maximum adsorption for methylene blue(MB), methyl violet(MV) and malachite green(MG) are 1173.27，1106.31 and 1129.89 mg/g, respectively, according to Langmuir fitting. The AC/MnO2/PAN fiber membrane also showed satisfactory performances for selective adsorption and recyclability. In addition, based on selective adsorption, the AC/MnO2/PAN fiber membranes that are repulsive to the anionic dye methyl orange(MO) can separate the MB/MO mixture solution by dynamic filtration. Thus, this work not only provides a facile strategy to fabricate large capacity adsorbents, but also demonstrates the potential applications in the dye wastewater treatment field.

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MOF@Polydopamine-incorporated membrane with high permeability and mechanical property for efficient fouling-resistant and oil/water separation

Zhao

Cao

Wang

et al. 2023

Environmental Research

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Self-cleaning Anti-fouling TiO2/Poly(aryl ether sulfone) Composite Ultrafiltration Membranes

Cited by 4 publications

References 36 publications

High-Performance, Free-Standing Symmetric Hybrid Membranes for Osmotic Separation

High-Performance, Free-Standing Symmetric Hybrid Membranes for Osmotic Separation

Preparation of MnO2 Loaded Hydrothermal Carbon-coated Electrospun PAN Fiber Membranes for Highly Efficient Adsorption and Separation of Cationic Dye

MOF@Polydopamine-incorporated membrane with high permeability and mechanical property for efficient fouling-resistant and oil/water separation

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