Nanosponge membrane with 3D-macrocycle β-cyclodextrin as molecular cage to simultaneously enhance antifouling properties and efficient separation of dye/oil mixtures

Ma, Sisi; Lin, Ligang; Li, Xinyang; Shi, Wenying; Zhai, Xiaofei; Yang, Jing

doi:10.1016/j.jiec.2022.05.035

Cited by 8 publications

(5 citation statements)

References 49 publications

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“…Wang et al used the dual pathways with Ti 3 C 2 T x -CDs in nanocomposite membrane to enhance organic permeation. 49 Nanosponge membrane with macrocycle β-CDs simultaneously exhibit oil/water treatment and antifouling properties (Fig. 6(c)).…”

Section: Host–guest Nanochannels With Separation Featuresmentioning

confidence: 99%

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Engineering solid nanochannels with macrocyclic host–guest chemistry for stimuli responses and molecular separations

Sun

Zhao

et al. 2023

Chem. Commun.

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Section: Host–guest Nanochannels With Separation Featuresmentioning

confidence: 99%

“…6(c)). 49 The macrocyclic cavity of β-CDs can encapsulate various guests. The wettability of the membrane showed hydrophilicity upon anchoring β-CD-N 3 onto the surface of the EVAL-membrane via click reaction.…”

Section: Host–guest Nanochannels With Separation Featuresmentioning

confidence: 99%

Engineering solid nanochannels with macrocyclic host–guest chemistry for stimuli responses and molecular separations

Sun

Zhao

et al. 2023

Chem. Commun.

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“…To address the aforementioned challenges, growing nanostructures is an effective approach to confer efficient oil/water separation while maintaining hydrophobic durability. 23 Inspired by nature, where superhydrophobic features are observed in various animals and plants, nanomultiscale structures can be constructed on the surface of melamine sponges. 24,25 These structures form robust air gaps preventing water infiltration and facilitating oil/water separation.…”

Section: ■ Introductionmentioning

confidence: 99%

“…While hydrophobic coatings have been explored for modifying melamine sponges, they often suffer from weak adhesion to the substrate, and their rough structure is highly fragile. , Thus, there is a pressing need for alternative materials for oil/water separation. To address the aforementioned challenges, growing nanostructures is an effective approach to confer efficient oil/water separation while maintaining hydrophobic durability . Inspired by nature, where superhydrophobic features are observed in various animals and plants, nanomultiscale structures can be constructed on the surface of melamine sponges. , These structures form robust air gaps preventing water infiltration and facilitating oil/water separation .…”

Section: Introductionmentioning

confidence: 99%

Hierarchical 0D CuO Wrapped by Petal-like 2D ZnO: A Strategic Approach of Superhydrophobic Melamine Sponge toward Wastewater Treatment

Aier,

Dhar Purkayastha

2024

Langmuir

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In addressing the pressing environmental challenges posed by frequent oil spills, this work presents a novel approach of synthesizing a superhydrophobic three-dimensional (3D) porous melamine sponge (MS). CuO and ZnO nanoparticles were grown on the MS via a hydrothermal method to create MS/CuO/ZnO with multiscale hierarchical nanostructures. The resulting material exhibited a stable water contact angle of 155°through various tests. MS/ CuO/ZnO demonstrated exceptional oil absorption capacities (40−145 g/g and 0.83−0.99 mL.cm −3 ), surpassing 98% efficiency in oil separation, and retained reusability for 10 cycles. Impressively, the sponge achieved successful separation of oil/water emulsions with a permeation flux of 14870 L m −2 h −1 . The composite sponge, distinguished by its high photodegradation ability, can degrade both waterand oil-targeted pollutants under visible light irradiation from light-emitting diode (LED). With its remarkable attributes including superior oil absorption, excellent oil/water separation, mechanical resistance, and excellent photocatalytic ability, it exhibits considerable potential for applications in both wastewater treatment and large-scale marine oil spill response. The easily prepared MS/CuO/ZnO emerges as a versatile solution capable of addressing pressing challenges and marking a significant leap toward sustainable and impactful environmental remediation.

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“…For instance, the discharge of dye wastewater into the environment exceeds 280 thousand tons annually, leading to severe environmental pollution. , While superwetting membranes with oil-repellent properties are effective for removing oils, they are less efficient for addressing water-soluble pollutants due to the diverse chemical and physical characteristics of these contaminants, compared to those of water-insoluble oily liquids. Hence, there is an urgent need to develop membranes with integrated multifunctionality capable of treating both insoluble oil droplets and soluble toxic components through a controlled and easy-operated strategy. − Adsorption is widely recognized as one of the most effective methods due to its low cost, high reliability, and excellent efficiency. − Thus, the fabrication of multicomponent material-based membrane is considered a promising approach to optimize membrane performance for treating complex wastewater systems. − …”

Section: Introductionmentioning

confidence: 99%

Multifunctional Polydopamine-Modified CuO Nanowire-Haired Membranes for Efficient Oil/Water Separation and Dye Removal

Zhang,

Zhao,

Zhu

et al. 2024

Ind. Eng. Chem. Res.

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Utilizing the synergistic effect of polydopamine (PD) with functional multigroups and nanowire-haired mesh membrane with a hierarchical structure and high surface area, we designed and fabricated a novel bioinspired PD-wrapped CuO nanowire-haired mesh membrane. The PD ultrathin layer on Cu(OH) 2 nanowires, with a thickness ranging from 5 nm to 15 nm, was through controllable self-polymerization of dopamine via catechol chemistry. Successful conversion of Cu(OH) 2 to CuO nanowires was achieved through an in situ dehydration process by thermal treatment at 160 °C. The as-prepared PD/CuO nanowirehaired mesh membrane exhibited superhydrophilicity and underwater superoleophobicity, demonstrating high oil/water separation efficiency toward various oils with residual oil content of <20 ppm through solely gravity-driven processes. Moreover, the introduction of a PD ultrathin layer on nanowires endowed the PD/CuO nanowire-haired membrane with improved adsorption properties for dyes containing Eschenmoster structures, showing adsorption values almost four times higher than those of the original Cu(OH) 2 nanowires-haired membrane without PD wrapping. Our results suggest that the method, combining hierarchical surface structure and functional ultrathin layer, could integrate both oil/water separation and hazardous material adsorption processes for potential wastewater treatment applications.

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Nanosponge membrane with 3D-macrocycle β-cyclodextrin as molecular cage to simultaneously enhance antifouling properties and efficient separation of dye/oil mixtures

Cited by 8 publications

References 49 publications

Engineering solid nanochannels with macrocyclic host–guest chemistry for stimuli responses and molecular separations

Engineering solid nanochannels with macrocyclic host–guest chemistry for stimuli responses and molecular separations

Hierarchical 0D CuO Wrapped by Petal-like 2D ZnO: A Strategic Approach of Superhydrophobic Melamine Sponge toward Wastewater Treatment

Multifunctional Polydopamine-Modified CuO Nanowire-Haired Membranes for Efficient Oil/Water Separation and Dye Removal

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