Graphene-based melamine sponges with reverse wettability for oil/water separation through absorption and filtration

Yang, Shaolin; Li, Jinze; Zhen, Cheng; Li, Fangfang; Sha, Simiao; Hou, Chunping; Lü, Hui; Wu, Jiandong; Sheng, Zhilin; Ma, Jingtan

doi:10.1016/j.jece.2022.107543

Cited by 14 publications

(4 citation statements)

References 42 publications

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“…To confirm the lightweight property of as‐synthesized ABs@Sponge, we placed the ABs@Sponge on the surface of the flower (Figure S2) and compared it with only the melamine sponge. We observed that the weight of the melamine sponge was not effectively increased and did not change the flower's shape or damage its structure [33] …”

Section: Resultsmentioning

confidence: 88%

“…We observed that the weight of the melamine sponge was not effectively increased and did not change the flower's shape or damage its structure. [33] Oil and Organic Solvent Absorption Test of ABs@Sponge The different oils and organic solvents were used to check the absorption capacity of as-synthesized ABs@Sponge material. In case of the oil absorption test of as-synthesized ABs@Sponge material, we used petrol, diesel, machine oil, and edible oil, whereas for the organic solvent absorption test, hexane, chloroform, dichloromethane, and xylene were used.…”

Section: Resultsmentioning

confidence: 99%

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Robust Synthesis of Hydrophobic Biosorbent for Effective Oil/Organic Solvent Cleanup

Bondarde,

Dhumal,

Lokhande

et al. 2024

ChemistrySelect

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Different carbon‐based sorbents are widely used for the refinement of industrial as well as domestic effluent because of their availability, low cost, and excellent hydrophobicity. In this article, the activated biosorbent (ABs) material was prepared and applied to develop a membrane (ABs@Membrane) and sponge (ABs@Sponge) for effective oil and organic solvent cleanup from water mixtures. The one‐pot process was adopted to prepare ABs material by the simple carbonization of naturally available cotton and biowaste chitosan with sulphuric acid. The fabricated ABs@Membrane and ABs@Sponge showed excellent hydrophobicity with excellent water contact angle, i. e., 138.06° and 135.58°, respectively. Moreover, the synthesized ABs@Sponge showed excellent oil/organic solvent absorption capacity in the presence of water, i. e., 40 gm of machine oil and 62 gm of chloroform. Whereas the synthesized ABs@Membrane material showed excellent oil‐water separation efficiency (>90 %) and water flux (219.29 Lm−2 h−1) with a good oil rejection ratio (>91 %). The synthesized ABs@Membrane and ABs@Sponge material showed excellent recyclability performance up to 5th no of consecutive cycles. The straightforward synthesis and fabrication of ABs@Membrane and ABs@Sponge materials with excellent oil rejection ratio and oil/organic solvent separation performance open a new window in the effluent water treatment application.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Robust Synthesis of Hydrophobic Biosorbent for Effective Oil/Organic Solvent Cleanup

Bondarde,

Dhumal,

Lokhande

et al. 2024

ChemistrySelect

View full text Add to dashboard Cite

show abstract

“…The prepared membrane exhibited super-hydrophobic nature underwater and hydrophilicity in the air, completely against wettability and allowing gravity-driven oil-water separation [70]. Similarly, many other studies have been performed on the development of GO-polymeric nanocomposite membranes [71][72][73][74][75][76], some of which are described in Table 1. The studies mentioned above and the comparative data of Table 1 suggested that graphene and its derivative efficiently separate oil-water.…”

Section: Graphene and Its Derivativementioning

confidence: 99%

Two-Dimensional Nanomaterial (2D-NMs)-Based Polymeric Composite for Oil–Water Separation: Strategies to Improve Oil–Water Separation

et al. 2023

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Oil leakage and organic solvent industrial accidents harm the ecosystem, especially aquatic and marine life. Oil–water separation is required to combat this issue, which substantially enhances the ecosystem and recovery of oils from water bodies. In this aspect, significant efforts have been made by scientists to develop newer composite materials that efficiently separate oils from water bodies with exceptional recyclability. Membrane filtration is an efficient option for oil–water separation due to its ability to separate oil from water without involving any chemicals. However, relatively less water permeability and a high degree of surface fouling limit their applicability. The advent of two-dimensional nanomaterials (2D-NMs) gives newer insight in developing membranes due to their exceptional characteristics like hydrophobicity/hydrophilicity, selectivity, antifouling ability, flexibility, and stability. Incorporating 2D-NMs within the polymeric membranes makes them exceptional candidates for removing oil from water. Moreover, 2D-NMs offer rapid sorption/desorption rates and boost water transportation. Additionally, 2D-NMs provide roughness that significantly enhances the fouling resistance in the polymeric membrane. This review focuses on properties of 2D-NM-based polymeric membrane and their roles in oil–water separation. We also discussed strategies to improve the oil–water separation efficiency. Finally, we discussed oil–water separation’s outlook and prospects using 2D-NM-based polymeric membranes. This review might provide new insight to the researchers who work on oil–water separation.

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“…Porous carbon materials, in particular graphene sponges, attract great interest in oil/water separation due to their huge capacities [ 9 , 10 , 11 , 12 ]. In 2012, Zhao and coworkers assembled graphene oxide sheets by hydrothermal treatment with thiourea to prepare a graphene sponge.…”

Section: Introductionmentioning

confidence: 99%

Porous Carbon Sponge from White-Rot Fungus Phanerochaete chrysosporium for the Removal of Oils and Organic Solvents

et al. 2023

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Oil leakage incidentally occurs and leads to environmental disasters. Because of their porous and hydrophobic characteristics, graphene sponges are often studied as an oil adsorbent to repair oil spills at sea. Graphene materials are very expensive, and their biological toxicity has been given serious concerns; however, the easier preparation and eco-friendly, biomass-derived porous carbon materials can be used as an alternative to graphene materials. In this study, we prepared a porous carbon sponge (PCS) for oil and organic solvent removal by carbonizing white-rot fungus Phanerochaete chrysosporium, a fast-growing microorganism for the production of lignin-degrading enzymes and the environmental remediation. P. chrysosporium fungus balls were converted into black PCS by carbonization at high temperatures, where PCS was light (density of 56 g/L), hydrophobic (contact angle of 115°) and porous. According to the results of BET and XPS analysis, the surface area of PCS was 14.43 m2/g, and the carbon in PCS is mainly sp2 carbon. PCS could adsorb pure oils and organic solvents within seconds. The adsorption capacities of PCS were 20.7 g/g for gasoline, 30.1 g/g for peanut oil, 27.7 g/g for toluene, 18.5 g/g for dodecane, 32.5 g/g for chloroform, 27.1 g/g for tetrahydrofuran, 23.7 g/g for acetone and 13.7 g/g for ethanol. According to the reusability study, there was no obvious capacity loss after recycling up to 10 cycles. Our results indicated that white-rot fungi could be adopted as a cheap carbon resource for oil and organic solvent removal.

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Graphene-based melamine sponges with reverse wettability for oil/water separation through absorption and filtration

Cited by 14 publications

References 42 publications

Robust Synthesis of Hydrophobic Biosorbent for Effective Oil/Organic Solvent Cleanup

Robust Synthesis of Hydrophobic Biosorbent for Effective Oil/Organic Solvent Cleanup

Two-Dimensional Nanomaterial (2D-NMs)-Based Polymeric Composite for Oil–Water Separation: Strategies to Improve Oil–Water Separation

Porous Carbon Sponge from White-Rot Fungus Phanerochaete chrysosporium for the Removal of Oils and Organic Solvents

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