Graphene oxide/silica composite nanofiltration membrane: Adjustment of the channel of water permeation

Deng, Huihui; Zheng, Q.; Chen, Hanbing; Huang, Jing; Yan, Hongding; Ma, Mengxu; Xia, Min; Pei, Kemei; Ni, Huagang; Peng, Ye

doi:10.1016/j.seppur.2021.119440

Cited by 22 publications

(10 citation statements)

References 57 publications

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“…As a result, the effective membrane surface area increased by 53.4%, leading to an enhancement of the water permeance. In another study, Deng et al 77 have investigated the size effects of a GO nanosheet (i.e., SGO: 0.4-1.2 µm, MGO: 2.0-6.2 µm, and LGO 17-23 µm) hybrid with SiO 2 nanoparticles (25 nm in diameter) on the molecular separation for NF. Different sizes of GO were fabricated from various sizes of graphite flakes via the Hummers' method, then the GO nanosheets were mixed with SiO 2 nanoparticles by ultrasonication and lastly the COF was coated on this hybrid supported on PES by the vacuum filtration method (see Fig.…”

Section: Graphene-based Composite Membranesmentioning

confidence: 99%

Section: Gbnm Membranes For Nfmentioning

confidence: 99%

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Membranes prepared from graphene-based nanomaterials for water purification: a mini-review

Aizudin

Alias

et al. 2022

Nanoscale

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Section: Graphene-based Composite Membranesmentioning

confidence: 99%

Section: Gbnm Membranes For Nfmentioning

confidence: 99%

Membranes prepared from graphene-based nanomaterials for water purification: a mini-review

Aizudin

Alias

et al. 2022

Nanoscale

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“…This led to an improvement in water permeability, which is attributed to the increase in hydrophilicity due to the increase in surface area of the GO-PIP membranes. Moreover, Deng et al [76] further improved membrane hydrophilicity, anti-fouling and chlorine resistance properties by adding SiO2 nanoparticles. This additive SiO2 creates a multitude of hydroxyl groups.…”

Section: Improvement Of Water Flowmentioning

confidence: 99%

Progress of water desalination applications based on wettability and surface characteristics of graphene and graphene oxide: A review

Eltigani

Boonyongmaneerat

2022

J Met Mater Miner

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Seawater desalination techniques have been continuously developed to tackle the water scarcity problems. This review article provides comprehensive discussion on the progress of water desalination applications that utilize the unique wettability and surface characteristics of graphene and graphene oxides, which are being employed as ultrafiltration membranes in either a monolayer or multilayer nanosheet configuration. The interaction of water with graphene materials and their wetting characteristics as well as the controlling factors are examined. Particularly, the designs and roles of hydrophilic and hydrophobic nanopores and nanochannels are discussed. A focus is also made on recent developments of graphene membrane with respect to water flow, salt rejection and durability.

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“…However, pure laminar GO membranes usually show low water flux. − How to improve the water flux of GO-based membranes without sacrificing the rejection rate is crucial for designing the NF membrane devices. Inserting a suitable amount of intercalation materials, including zero-dimensional (0D) materials such as quantum dots, one-dimensional (1D) materials such as Fe 3 O 4 , SiO 2 , TiO 2 nanoparticles, , oxidized carbon nanotubes (OCNTs), − 2D materials such as boron nitride (BN) and MoS 2 , and three-dimensional (3D) materials such as metal–organic frameworks (MOFs), − into the interlayer channels to enlarge the interlayer distances has become an effective strategy to enhance water permeance. For example, Jin et al enlarged the interlayer distances to enhance the water flux by uniformly in situ-growing the Fe 3 O 4 nanoparticles on the plane of the GO nanosheet.…”

Section: Introductionmentioning

confidence: 99%

Graphene Oxide Composite Membranes for Water Purification

Zhu

Guo

Chen³

et al. 2022

ACS Appl. Nano Mater.

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Graphene oxide (GO) has attracted remarkable attention as a potential material in the fabrication of next-generation membranes with high water permeability and efficient purification. Herein, an easy and effective means of modifying GO lamellar with a phytic acid (PhA) molecule as both an inserter and a surface modifier was developed to fabricate high-performance GO-based membranes. As a result, the addition of PhA to the GO membrane enhanced hydrophilicity and enlarged the interlamellar spacing. The optimal GP-10 composite membrane displayed a high average pure water flux of 6.31 L m–2 h–1 bar–1 under an ultralow pressure nanofiltration condition, which was about 18.6 times higher than that of 0.34 L m–2 h–1 bar–1 for pure GO membrane. At the same time, it possessed the ability to reject different charged dye molecules with a rejection rate higher than 99.88%. In addition, the composite membrane also showed good structural stability under different pH conditions. This study not only provides a method to simply design GO-based membranes by introducing multifunctional small molecules but also sheds light on using such GO composite membranes in practical water separation applications.

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Graphene oxide/silica composite nanofiltration membrane: Adjustment of the channel of water permeation

Cited by 22 publications

References 57 publications

Membranes prepared from graphene-based nanomaterials for water purification: a mini-review

Membranes prepared from graphene-based nanomaterials for water purification: a mini-review

Progress of water desalination applications based on wettability and surface characteristics of graphene and graphene oxide: A review

Graphene Oxide Composite Membranes for Water Purification

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