Tetradecylamine-MXene functionalized melamine sponge for effective oil/water separation and selective oil adsorption

Xue, Jinwei; Zhu, Lei; Zhu, Xu; Li, Hui; Ma, Chunfeng; Yu, Shifan; Sun, Daofeng; Xia, Fujun; Xue, Qingzhong

doi:10.1016/j.seppur.2020.118106

Cited by 122 publications

(42 citation statements)

References 34 publications

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“…The most recently developing MXene 2D material was combined with tetradecylamine (TDA) by Xue et al [ 84 ] to develop superhydrophobic foam. Separation of the emulsion was done by keeping the foam in a syringe and compressing to release the filtrate.…”

Section: Oil/water Emulsion Separation By Ma and Pu Foamsmentioning

confidence: 99%

The Separation of Oil/Water Mixtures by Modified Melamine and Polyurethane Foams: A Review

Hailan¹,

Ponnamma²,

Krupa³

2021

Polymers

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Melamine (MA) and polyurethane (PU) foams, including both commercial sponges for daily use as well as newly synthesized foams are known for their high sorption ability of both polar and unipolar liquids. From this reason, commercial sponges are widely used for cleaning as they absorb a large amount of water, oil as well as their mixtures. These sponges do not preferentially absorb any of those components due to their balanced wettability. On the other hand, chemical and physical modifications of outer surfaces or in the bulk of the foams can significantly change their original wettability. These treatments ensure a suitable wettability of foams needed for an efficient water/oil or oil/water separation. MA and PU foams, dependently on the treatment, can be designed for both types of separations. The particular focus of this review is dealt with the separation of oil contaminants dispersed in water of various composition, however, an opposite case, namely a separation of water content from continuous oily phase is also discussed in some extent. In the former case, water is dominant, continuous phase and oil is dispersed within it at various concentrations, dependently on the source of polluted water. For example, waste waters associated with a crude oil, gas, shale gas extraction and oil refineries consist of oily impurities in the range from tens to thousands ppm [mg/L]. The efficient materials for preferential oil sorption should display significantly high hydrophobicity and oleophilicity and vice versa. This review is dealt with the various modifications of MA and PU foams for separating both oil in water and water in oil mixtures by identifying the chemical composition, porosity, morphology, and crosslinking parameters of the materials. Different functionalization strategies and modifications including the surface grafting with various functional species or by adding various nanomaterials in manipulating the surface properties and wettability are thoroughly reviewed. Despite the laboratory tests proved a multiply reuse of the foams, industrial applications are limited due to fouling problems, longer cleaning protocols and mechanical damages during performance cycles. Various strategies were proposed to resolve those bottlenecks, and they are also reviewed in this study.

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Section: Oil/water Emulsion Separation By Ma and Pu Foamsmentioning

confidence: 99%

The Separation of Oil/Water Mixtures by Modified Melamine and Polyurethane Foams: A Review

Hailan¹,

Ponnamma²,

Krupa³

2021

Polymers

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“…CPS shows characteristic absorption bands in the ranges of 700-756, 1450-1500, and 2800-3200 cm −1 , corresponding to the out-of-plane C-H bending bands, C-C stretching vibrations in the aromatic ring, and the C-H stretching vibration of -(CH 2 ) n -, respectively [39,40]. MXene shows characteristic peaks at 1380, 1520, and 3740 cm −1 , respectively, which were assigned to the stretching vibrations of -OH, -C=O, and -OH, respectively, reflecting the abundance of termini of the Ti 3 C 2 T x -MXene nanosheets [41,42]. It is noteworthy that the intensities of characteristic frequencies, in particular, the -(CH 2 ) n -vibration in the 2800-3200 cm −1 range of CPS in CPS@MXene, decreased significantly, indicating the successful wrapping of MXene on the surface of CPS.…”

Section: Characterization Of Hsmxmentioning

confidence: 99%

“…Namely, the water droplet partially enters the concave-convex grooves formed by the 3D HSMX nanofolds, as depicted in Scheme 2. The HSMX membrane also exhibited the ability for rapid separation of dichloromethane underwater; a silver mirror phenomenon [41] appeared at the interface between HSMX and water, accompanied by the repellent bubbles adhering to the surface of HSMX (see Figure 4g). It is believed that this phenomenon is not only related to the strong repulsion of the superhydrophobic membrane to water, but also related to the Marmur model.…”

Section: Superhydrophobic Performancementioning

confidence: 99%

Three-Dimensional Superhydrophobic Hollow Hemispherical MXene for Efficient Water-in-Oil Emulsions Separation

et al. 2021

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A superhydrophobic macroporous material composed of hollow hemispherical MXene (HSMX) was synthesized by the thermal annealing of MXene-wrapped cationic polystyrene spheres (CPS@MXene). Notably, the spherical MXene shells exhibited highly efficient catalysis of the carbonization of CPS into carbon nanoparticles. Their insertion into the interlayer of MXene increased the d-spacing and created hollow hemispheres. The as-prepared HSMX with nanoscale walls had a lower packing density than MXene, but higher porosity, total pore volume, and total pore area. Moreover, the stacking of hollow hemispheres promoted the formation of a highly undulating macroporous surface and significantly improved the surface roughness of the HSMX-based 3D membrane, resulting in superhydrophobicity with a water contact angle of 156.4° and a rolling angle of 6°. As a result, the membrane exhibited good separation efficiency and Flux for emulsifier-stabilized water-in-paraffin liquid emulsions, which was dependent on its superhydrophobic performance and strong demulsification ability derived from the razor effect originating from the ultrathin walls of HSMX. This work provides a facile approach for the transformation of highly hydrophilic 2D MXene into superhydrophobic 3D HSMX, and opens a new pathway for the development of advanced MXene-based materials for environmental remediation applications.

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“…Many scientists around the world put a lot of effort in solving the problem of oil spill in the ocean [8]. Till now only three techniques are used in this regard and are based on physical treatment, chemical treatment and biological treatment [9,10]. Among those treatments, chemical treatment has the disadvantage of causing secondary pollution, and biological treatment has the disadvantage that it is uncontrollable and works very slowly.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of magnetic and superhydrophobic nickel nanoparticles by plasma arc discharge method, application for efficient recoverable and repeatable oil separation from oily-water

et al. 2021

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Nowadays, the contamination of water due to oily waste is causing a serious threat to the environment. There is a need of a method that possesses a simple treatment route, low operational cost and high durability. The oil-water extractors, using magnetic-hydrophobic nanoparticles, act as an efficient method to separate the oil present in the waste water. In this study, thermal plasma system was developed which was found to be the effective and eco-friendly method for materials processing such as the production of superhydrophobic sphere-shaped nickel nanoparticles used oil/water separation process. The chemical composition, morphology and crystal structure of synthesized nanoparticles were investigated by XRD, TEMand XPS. The saturation magnetization (Ms) 45.26 emu/g, coercivity (Hc) 91.8 Oe and remanent magnetization (Mr) 6.65 emu/g of synthesized nickel nanoparticle at room temperature were investigated by using the VSM technique. Synthesized Nickel nanoparticles have high oil absorption capacity, rapid absorption rate and are ideal reusable for oil-water separation treatment. The nickel-coated sponge was found to be superhydrophobic and superoleophilic, respectively, with a water interaction angle of 150.8º for water and 0º for oil. Thus, the nanoparticles coated sponge has a separation efficiency of more than 98%, in separating both the heavy and light oils from oily-water. The separation recycling of the petrol/water mixture remained more than 96% even after 20 separation cycles.

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Tetradecylamine-MXene functionalized melamine sponge for effective oil/water separation and selective oil adsorption

Cited by 122 publications

References 34 publications

The Separation of Oil/Water Mixtures by Modified Melamine and Polyurethane Foams: A Review

The Separation of Oil/Water Mixtures by Modified Melamine and Polyurethane Foams: A Review

Three-Dimensional Superhydrophobic Hollow Hemispherical MXene for Efficient Water-in-Oil Emulsions Separation

Synthesis of magnetic and superhydrophobic nickel nanoparticles by plasma arc discharge method, application for efficient recoverable and repeatable oil separation from oily-water

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