Superhydrophobic MS@CuO@SA sponge for oil/water separation with excellent durability and reusability

Nguyen-Dinh, Minh-Thao; Bui, Thanh Son; Lee, Byeong–Kyu; Masoumi, Zohreh

doi:10.1016/j.chemosphere.2021.133328

Cited by 16 publications

(4 citation statements)

References 27 publications

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“…Figure a shows the typical FTIR spectra of pristine MS and S-MMP@MS. The FTIR spectrum of pristine MS revealed strong peaks at 3374, 1543, and 809 cm –1 , which can be attributed to the bending vibrations of N–H stretching, C–N stretching, and the triazine ring, respectively. , The bending sorption peaks of C–H bonds are shown at 1326 and 1442 cm –1 in the pristine MS spectrum. In addition to showing the same spectrum as that of the pristine MS, the S-MMP@MS also showed some new spectral bands.…”

Section: Resultsmentioning

confidence: 94%

In Situ Redox Strategy to Fabricate Superhydrophobic Sponges for Efficient Oil–Water Separation

Ji,

Jia,

Chen

2024

ACS Appl. Polym. Mater.

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sponge (S-MMP@MS) with highly efficient oil−water separation was prepared. MnO 2 nanoparticles were loaded onto melamine sponges through the in situ redox reaction between AF-MWCNTs and KMnO 4 . To further enhance the hydrophobic properties of the modified sponges, a nontoxic polydimethylsiloxane (PDMS) glue layer was fixed on the sponges by dip-coating. The S-MMP@MS demonstrated excellent superhydrophobicity (with a water contact angle of 156.8°), a high adsorption capacity (54.3−136.7 g/g), and excellent recyclability (50 times of the adsorption−extrusion cycle). In addition to immiscible oil−water mixtures, the modified sponges can separate water-in-oil emulsions and oil-in-water emulsions with equal effectiveness (the separation rate exceeded 99.0%). Furthermore, the modified sponges can maintain stable superhydrophobicity in simulated complex marine environments, including acidic environments, alkaline environments, corrosive conditions, different temperatures, and mechanical compression. The superhydrophobic melamine sponges are expected to be a potential material for oil spill treatment due to their excellent oil−water separation efficiency, reusability, environmental suitability, and mechanical stability.

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Section: Resultsmentioning

confidence: 94%

In Situ Redox Strategy to Fabricate Superhydrophobic Sponges for Efficient Oil–Water Separation

Ji,

Jia,

Chen

2024

ACS Appl. Polym. Mater.

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“…For pristine MS, the peak at 3300 cm −1 is expected as a stretchable vibration of NH 33 and 1554 cm −1 associates as a stretchable vibration belonging to CN 34 . The peaks at 1457 and 1315 cm −1 can be assigned as a bending vibration of CH, 35 the peak observed at 1147 cm −1 is related with CO stretchable vibration 36 and the peaks positioned at 972 and 811 cm −1 is expected as the bending vibration of s‐triazine ring 37 . For MS/ZnO, the peaks established at 830, 807, and 701 cm −1 coincide with the metal‐oxygen (ZnO stretchable vibrations).…”

Section: Resultsmentioning

confidence: 99%

“…This phenomenon demonstrates the coexistence of ZnO and PDMS and illustrates how the peaks of MS are concealed by combined diffraction peaks of ZnO and PDMS, signifying an effective anchoring of ZnO and PDMS on the framework of the MS. 27 The FTIR spectra for the pristine MS, MS/ZnO, and MS/ZnO/PDMS are shown in Figure 3b. For pristine MS, the peak at 3300 cm À1 is expected as a stretchable vibration of N H 33 and 1554 cm À1 associates as a stretchable vibration belonging to C N. 34 The peaks at 1457 and 1315 cm À1 can be assigned as a bending vibration of C H, 35 the peak observed at 1147 cm À1 is related with C O stretchable vibration 36 and the peaks positioned at 972 and 811 cm À1 is expected as the bending vibration of s-triazine ring. 37 For MS/ZnO, the peaks established at 830, 807, and 701 cm À1 coincide with the metal-oxygen (ZnO stretchable vibrations).…”

Section: Morphological and Chemical Characterization Of Ms/zno/pdmsmentioning

confidence: 99%

A multifunctional non‐fluorinated flame retardant superhydrophobic 3‐D porous material for highly selective oil spill treatment and removal of dyes

Aier,

Dhar Purkayastha

2023

J of Applied Polymer Sci

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The environment and global healthcare are at risk from oily wastewater accumulation and spills. Hence, porous sponge materials are widely sought for remedial oil cleanups. Materials with superhydrophobic and photocatalytic characteristics are implemented for extensive use besides oil–water separation, self‐cleaning, and removal of dyes. Regardless of the various upsides, few materials display both of these features jointly. Most nanomaterial photocatalysts are susceptible to the action of ultraviolet (UV) light irradiation, which often inhibits their hydrophobicity. Here in this work, a photocatalyst such as ZnO was coated on a porous 3‐D melamine sponge (MS). To preserve the hydrophobicity without sacrificing the photocatalytic behavior, ZnO coated melamine sponge was modified with transparent polydimethylsiloxane (PDMS) to obtain MS/ZnO/PDMS. The obtained superhydrophobic photocatalytic sponge exhibits exceptional oil adsorption capacity, superior stability even under severe conditions and the ability to remove organic dyes. Remarkably, the sponge exhibits outstanding compressive strength and fire resistance properties, indicating the possible utilization in a prolonged practical execution. As a result, this technique might pave the way for the creation of a comprehensive design for an improved superhydrophobic photocatalytic sponge with high stability and recyclability.

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“…The modified sponge was obtained through coating of MIL-53(Fe) followed by 1-dodecanethiol via polydopamine-assisted surface on the sponge . 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 .…”

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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Superhydrophobic MS@CuO@SA sponge for oil/water separation with excellent durability and reusability

Cited by 16 publications

References 27 publications

In Situ Redox Strategy to Fabricate Superhydrophobic Sponges for Efficient Oil–Water Separation

In Situ Redox Strategy to Fabricate Superhydrophobic Sponges for Efficient Oil–Water Separation

A multifunctional non‐fluorinated flame retardant superhydrophobic 3‐D porous material for highly selective oil spill treatment and removal of dyes

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

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