Superoleophobic graphene oxide/halloysite nanotube composite membranes for oil-water separation

Zhang, Xing; Zhang, Zhepeng; Zeng, Zhixiang; Du, Shuangming; Liu, Eryong

doi:10.1016/j.matchemphys.2021.124347

Cited by 29 publications

(4 citation statements)

References 1 publication

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“…In addition, the GO/HNTs composite membrane was successfully used for oil-water separation experiments. Consequently, the proposed membrane in this study is a promising candidate for oil/water separation processes [234]. Table 9 below shows the application of some graphene and its derivatives in the removal of heavy metals and dyes from water.…”

Section: Application Of Two-dimensional Layer Materials Composed Memb...mentioning

confidence: 99%

“…Nanomaterials are mainly incorporated into the membranes to enhance the membrane permeation flux and oil/water emulsion separation performance. Zhang, et al [234] fabricated nanocomposite membranes graphene oxide/halloysite nanotubes (GO/HNTs) that Small pollutants and organic molecules cause detrimental environmental effects that destroy the environment and human health. However, their removal from the environment is very difficult due to their narrow size.…”

Section: Application Of Two-dimensional Layer Materials Composed Memb...mentioning

confidence: 99%

“…Nanomaterials are mainly incorporated into the membranes to enhance the membrane permeation flux and oil/water emulsion separation performance. Zhang, et al [234] fabricated nanocomposite membranes graphene oxide/halloysite nanotubes (GO/HNTs) that consisted of GO nanosheets and HNTs. The fabricated membrane exhibited high permeation flux and rejection rate.…”

Section: Application Of Two-dimensional Layer Materials Composed Memb...mentioning

confidence: 99%

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Recent Progress on Nanomaterial-Based Membranes for Water Treatment

et al. 2021

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Nanomaterials have emerged as the new future generation materials for high-performance water treatment membranes with potential for solving the worldwide water pollution issue. The incorporation of nanomaterials in membranes increases water permeability, mechanical strength, separation efficiency, and reduces fouling of the membrane. Thus, the nanomaterials pave a new pathway for ultra-fast and extremely selective water purification membranes. Membrane enhancements after the inclusion of many nanomaterials, including nanoparticles (NPs), two-dimensional (2-D) layer materials, nanofibers, nanosheets, and other nanocomposite structural materials, are discussed in this review. Furthermore, the applications of these membranes with nanomaterials in water treatment applications, that are vast in number, are highlighted. The goal is to demonstrate the significance of nanomaterials in the membrane industry for water treatment applications. It was found that nanomaterials and nanotechnology offer great potential for the advancement of sustainable water and wastewater treatment.

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Section: Application Of Two-dimensional Layer Materials Composed Memb...mentioning

confidence: 99%

Section: Application Of Two-dimensional Layer Materials Composed Memb...mentioning

confidence: 99%

“…Nanomaterials are mainly incorporated into the membranes to enhance the membrane permeation flux and oil/water emulsion separation performance. Zhang, et al [234] fabricated nanocomposite membranes graphene oxide/halloysite nanotubes (GO/HNTs) that consisted of GO nanosheets and HNTs. The fabricated membrane exhibited high permeation flux and rejection rate.…”

Section: Application Of Two-dimensional Layer Materials Composed Memb...mentioning

confidence: 99%

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Recent Progress on Nanomaterial-Based Membranes for Water Treatment

et al. 2021

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“…One of these clays is halloysite nanoclay (Hal) [21][22][23] that is dioctahedral 1:1 clay mineral with tubular morphology [24][25][26][27][28][29][30][31]. The outstanding performance of this clay [32,33] as a support has induced many studies and to date [34,35], various catalytic species have been stabilized on Hal. Noteworthy, not only Hal exterior surface can be decorated with catalytic species, but also Hal lumen can be targeted for embedding the catalytic species.…”

Section: Introductionmentioning

confidence: 99%

Halloysite Nanoclay with High Content of Sulfonic Acid-Based Ionic Liquid: A Novel Catalyst for the Synthesis of Tetrahydrobenzo[b]pyrans

et al. 2021

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One of the main drawbacks of supported ionic liquids is their low loading and consequently, low activity of the resultant catalysts. To furnish a solution to this issue, a novel heterocyclic ligand with multi imine sites was introduced on the surface of amino-functionalized halloysite support via successive reactions with 2,4,6-trichloro-1,3,5-triazine and 2-aminopyrimidine. Subsequently, the imine sites were transformed to sulfonic acid-based ionic liquids via reaction with 1,4-butanesultone. Using this strategy, high loading of ionic liquid was loaded on halloysite nanoclay. The supported ionic liquid was then characterized with XRD, SEM, TEM, EDS, FTIR, BET, TGA and elemental mapping analysis and utilized as a metal-free Brønsted acid catalyst for promoting one-pot reaction of aldehydes, dimedone and malononitrile to furnish tetrahydrobenzo[b]pyrans. The catalytic tests confirmed high performance of the catalyst. Moreover, the catalyst was stable upon recycling.

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Synergistic flame‐retardant effect of modified hydrotalcite and expandable graphite for silicone rubber foam

Liu

Sheng

et al. 2022

J of Applied Polymer Sci

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Silica gel‐coated hydrotalcite (LDHs) flame retardants (SiLDHs‐Ce) are prepared by the sol–gel method. The synergistic effect of SiLDHs‐Ce and expandable graphite (EG) on the silicone rubber foam (SRF) is studied through limiting oxygen index (LOI), Cone Calorimeter Test (CC), thermogravimetric infrared spectrometer (TG‐IR), and scanning electron microscopy. The results show that SiLDHs‐Ce and EG can improve the flame retardant properties of the SRF materials. The LOI value of the SRF material can reach 40.1% when the ratio of EG to SiLDHs‐Ce is 2:1, and the heat release rate (HRR) and total heat release (THR) are reduced by 66.60% and 52.76%, respectively, compared with the original. The minimum SPR of the SRF material is 0.010 m2 s−1 when 1 wt% SiLDHs‐Ce has been added. TG‐IR results show that the addition of EG and SiLDHs‐Ce increased the carbon residue rate of SRF materials. Results show that the residual carbon‐containing EG and SiLDHs‐Ce is denser. It is inferred that the synergistic flame retardant mechanism of SiLDHs‐Ce and EG on the SRF is mainly condensed phase flame retardant, augmented by gas‐phase flame retardant. The results of this study can provide guidance for the development of environmentally friendly silicone rubber foam.

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Superoleophobic graphene oxide/halloysite nanotube composite membranes for oil-water separation

Cited by 29 publications

References 1 publication

Recent Progress on Nanomaterial-Based Membranes for Water Treatment

Recent Progress on Nanomaterial-Based Membranes for Water Treatment

Halloysite Nanoclay with High Content of Sulfonic Acid-Based Ionic Liquid: A Novel Catalyst for the Synthesis of Tetrahydrobenzo[b]pyrans

Synergistic flame‐retardant effect of modified hydrotalcite and expandable graphite for silicone rubber foam

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