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Preparation method of MXene-based efficient oil-water separation sponge

An oil-water separation, sponge technology, applied in separation methods, liquid separation, chemical instruments and methods, etc., can solve the problem of low oil absorption capacity of sponges

Inactive Publication Date: 2020-02-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

The surface of the sponge has no obvious change after repeated use for 200 times, showing excellent recycling performance, but the sponge has the problem of low oil absorption capacity (China Surface Engineering, 2018, 31(1):148-155.)

Method used

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  • Preparation method of MXene-based efficient oil-water separation sponge
  • Preparation method of MXene-based efficient oil-water separation sponge
  • Preparation method of MXene-based efficient oil-water separation sponge

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Embodiment Construction

[0019] The present invention will be described in detail below in conjunction with the accompanying drawings and implementation.

[0020] (1) Preparation of MXene: 0.18 g of Ti 3 AlC 2 -MAX powder was added to 1.80 g of concentrated hydrofluoric acid solution and stirred at 40°C for 30 hours. The etched multilayer MXene nanosheets were obtained by centrifugation 5 times (each centrifugation speed was 8000 rpm for 10 minutes). Afterwards, exfoliation (without gas protection) was performed by sonicating the multilayer MXene nanosheets in 250 mL of highly polar N,N-dimethylformamide for 3 h. Finally, the resulting suspension was centrifuged several times (12000 rpm for 20 minutes each time), washed with deionized water and dried in a vacuum oven (at 45 degrees Celsius for 8 hours), Finally, few layers of MXene nanosheets are obtained;

[0021] (2) Disperse 6 mg of few-layer MXene nanosheets in 100 ml of water and sonicate for 10 minutes to obtain a uniform dispersion. Then i...

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Abstract

The invention relates to a melamine sponge modified with MXene / tetradecylamine on the surface. Melamine sponge is used as a matrix, and the surface of the sponge is modified with MXene by utilizing asolution impregnation process to construct a micro / nano structure; and then the surface of MXeneis is grafted with tetradecylamine to carry out surface modification in order to finally obtain the efficient oil-water separation sponge with the superhydrophobic-superoleophylic performance. The operation process is simple, raw materials are easy to obtain, and the finally prepared oil-water separation sponge has an excellent absorption performance and a good cyclic utilization performance on different oil products, can realize efficient separation and recovery of different oil-water mixtures, andrelieves huge pressure of the ecological environment.

Description

technical field [0001] The invention specifically relates to a surface-modified MXene / tetradecylamine oil-water separation sponge and a preparation method thereof, belonging to the technical field of new materials. Background technique [0002] With the growth of energy demand, the rapid development of the petroleum industry and maritime transportation industry has led to frequent occurrence of oil spill accidents at sea, causing serious damage to natural water bodies and leading to increasingly serious environmental pollution problems. Therefore, how to quickly and efficiently separate oily wastewater has attracted widespread attention. Compared with traditional adsorption materials, porous sponges have the advantages of high porosity, large specific surface area, high cost performance, and simple preparation process. In addition, sponge can provide a higher oil storage space, which is beneficial to the adsorption and recovery of different oil products. It is a kind of gre...

Claims

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Application Information

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IPC IPC(8): B01D17/022C02F1/28C02F1/40
CPCB01D17/0202C02F1/288C02F1/40
Inventor 薛庆忠薛金伟祝磊李晖马超尹莹莹
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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