Superhydrophobic and superoleophilic properties of graphene-based sponges fabricated using a facile dip coating method

Nguyen, Duc Khuong; Tai, Nyan‐Hwa; Lee, San-Boh; Kuo, Wen‐Shyong

doi:10.1039/c2ee21848h

Cited by 742 publications

(550 citation statements)

References 16 publications

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“…Importantly, a mirror reflection was observed when a piece of GMA-1 was immersed into water (Fig. S2a), indicating its high hydrophobicity [29], which was further confirmed by the water contact angle of 130°±3°mea-sured on the GMA-1 surface (Fig. S2b).…”

Section: Resultsmentioning

confidence: 54%

Preparation of graphene-MoS2 hybrid aerogels as multifunctional sorbents for water remediation

Chen

et al. 2017

Sci. China Mater.

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The increasing demand of clean water and effective way to recycle industrial wastewater has offered a new application for carbon-based three-dimensional (3D) porous networks as sorbents due to their superior sorption abilities. Through the surface modification and hybridization with functional materials, the physical and chemical properties of the 3D carbon-based materials can be engineered. In this work, graphene-MoS 2 aerogels (GMAs) with bulky shape are synthesized via a one-pot hydrothermal method. The obtained GMAs show quick sorption rate and high sorption capacity towards a wide variety of contaminants. The sorption covers not only organic solvents or organic dyes, but also toxic heavy metals ions such as Hg 2+ and Pb 2+ . More importantly, the sorption capacity towards metal ions can be optimized by simply changing the loading amount of MoS 2 .

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Section: Resultsmentioning

confidence: 54%

Preparation of graphene-MoS2 hybrid aerogels as multifunctional sorbents for water remediation

Chen

et al. 2017

Sci. China Mater.

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“…Recently, the loading of CMPs and graphene nanosheets onto sponges for the preparation of superhydrophobic sponges for selective absorption of oils and organics from water has been reported by our research group [8] and others. [33] Herein, we prepared superhydrophobic activated carbon-coated sponges by loading AK 1 particles on sponge skeletons and subsequently treating those with PDMS. SEM images showed that the original sponge was clean and smooth with a 3D porous structure and the pore size was approximately 100-200 mm (Figure 5 a).…”

Section: Resultsmentioning

confidence: 99%

Superhydrophobic Activated Carbon‐Coated Sponges for Separation and Absorption

Sun¹,

An²,

Zhu³

et al. 2013

ChemSusChem

193

105

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Highly porous activated carbon with a large surface area and pore volume was synthesized by KOH activation using commercially available activated carbon as a precursor. By modification with polydimethylsiloxane (PDMS), highly porous activated carbon showed superhydrophobicity with a water contact angle of 163.6°. The changes in wettability of PDMS‐ treated highly porous activated carbon were attributed to the deposition of a low‐surface‐energy silicon coating onto activated carbon (confirmed by X‐ray photoelectron spectroscopy), which had microporous characteristics (confirmed by XRD, SEM, and TEM analyses). Using an easy dip‐coating method, superhydrophobic activated carbon‐coated sponges were also fabricated; those exhibited excellent absorption selectivity for the removal of a wide range of organics and oils from water, and also recyclability, thus showing great potential as efficient absorbents for the large‐scale removal of organic contaminants or oil spills from water.

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“…3,4 Thus far, various porous sorbents, such as resins, gels, carbon-based sponges/ solids and diverse polymeric materials, have been explored. [5][6][7][8] Previous studies have excessively focused on the oil sorption capacity, and the spilled oil has been recovered mainly via distillation and squeezing, [9][10][11][12] which are time-consuming, tedious and energydemanding and are thus seriously restricted in their practical application.…”

Section: Introductionmentioning

confidence: 99%

Coating sponge with a hydrophobic porous coordination polymer containing a low-energy CF3-decorated surface for continuous pumping recovery of an oil spill from water

et al. 2016

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For the remediation of oil spills and organic solvent leakage into water, it is desirable to develop not only advanced sorbents with a high adsorption capability but also labor-and time-saving apparatuses that can work continuously without human intervention. In this work, we synthesized a novel and highly stable porous coordination polymer (PCP, also called metal-organic framework), University of Science and Technology of China-6 (USTC-6), with a corrugated -CF 3 surface that features high hydrophobicity. The uniform growth of USTC-6 throughout a graphene oxide (GO)-modified sponge was achieved and yielded a macroscopic USTC-6@GO@sponge sorbent, which repels water and exhibits a superior adsorption capacity for diverse oils and organic solvents. Remarkably, the sorbent can be further assembled with tubes and a self-priming pump to build a model apparatus that affords consecutive and efficient oil recovery from water. The easy and fast recovery of oils/organic solvents from water based on such an apparatus indicates that it has great potential for future water purification and treatment.

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Superhydrophobic and superoleophilic properties of graphene-based sponges fabricated using a facile dip coating method

Cited by 742 publications

References 16 publications

Preparation of graphene-MoS2 hybrid aerogels as multifunctional sorbents for water remediation

Preparation of graphene-MoS2 hybrid aerogels as multifunctional sorbents for water remediation

Superhydrophobic Activated Carbon‐Coated Sponges for Separation and Absorption

Coating sponge with a hydrophobic porous coordination polymer containing a low-energy CF3-decorated surface for continuous pumping recovery of an oil spill from water

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