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Oil-absorbing carbon sponge and preparation method thereof

A sponge and oil-carbon technology, applied in the field of materials, can solve the problems of expensive, difficult to reuse, easy to be damaged, etc., and achieve the effects of excellent mechanical properties, fast oil-water separation, and excellent hydrophobic properties

Inactive Publication Date: 2018-06-29
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, pure graphene airgel is used in water restoration, but its shortcomings are also very prominent, not only high cost, but also poor toughness and low utilization efficiency, because its shape is easily damaged and difficult to reuse
How to take advantage of the excellent properties of graphene and overcome its own problems of high price and poor circulation

Method used

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  • Oil-absorbing carbon sponge and preparation method thereof
  • Oil-absorbing carbon sponge and preparation method thereof
  • Oil-absorbing carbon sponge and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] First, cut the commercial sponge, that is, the melamine sponge, into a suitable size, and then ultrasonically clean the melamine sponge with ultrapure water for 3 to 5 times;

[0024] Specifically, the purpose of ultrasonic cleaning is to wash off the dust and impurities on the surface of commercial sponges, so that graphene oxide can be better loaded on the sponges;

[0025] Ultrasonic cleaning with ethanol solution and drying;

[0026] Specifically, the purpose of cleaning with ethanol is to:

[0027] (1) In order to dissolve some organic impurities;

[0028] (2) After cleaning the sponge, use ethanol solvent instead of water to make the sponge dry faster.

[0029] Adjust the concentration of graphene oxide to an appropriate range: 0.5~5mg mL -1 ;

[0030] Put the dried sponge into graphene oxide of known concentration and disperse it ultrasonically (ultrasonic frequency: 59kHz; temperature: room temperature; time: half an hour) to obtain a graphene oxide-coated m...

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Abstract

The invention provides oil-absorbing carbon sponge and a preparation method thereof. The method comprises the following steps: putting sponge into oxidized graphene with a known concentration, and carrying out ultrasonic dispersion to obtain graphene oxide coated melamine sponge; freeze-drying the graphene oxide coated melamine sponge: completely freezing the graphene oxide coated melamine spongeinto ice at the temperature of -70 DEG C, then placing the frozen product in an environment under the vacuum condition of 1Pa, and carrying out vacuum drying for 36-72h; calcining for 1-5h at the temperature of 150-400 DEG C in the reducing atmosphere so as to obtain the graphene-based carbon sponge. The preparation method utilizes the graphene oxide modified melamine carbon sponge to obtain the superhydrophobic graphene-based carbon sponge, thus not only reducing the consumption of graphene oxide and further reducing the production cost, but also being simple in process; the obtained graphenecarbon sponge more effectively combines the advantages of graphene and three-dimensional macro-commercial sponge, thus having better absorption performance, excellent mechanical properties and more superior hydrophobic property.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to an oil-absorbing carbon sponge and a preparation method thereof. Background technique [0002] The exploitation and utilization of oil, industrial production and domestic waste will inevitably bring a series of serious pollution problems to the water environment, such as water pollution caused by crude oil leakage, water pollution caused by industrial waste oil and organic solvents, etc. Among the many water pollutions, oil spills at sea are currently one of the most harmful, deepest, and most difficult to control, because oil spills at sea will not only directly affect the marine ecological environment, but will eventually affect the terrestrial environment on which human beings depend. and their own safety. The key to the treatment of offshore oil spills lies in the timeliness, large-scale, high efficiency and recycling. In comparison, physical adsorption can not only absor...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28B01J20/32B01D17/022C08J9/36C09K3/32
CPCB01D17/0202B01J20/20B01J20/205B01J20/28045B01J20/324C08J9/365C08J2361/28C09K3/32
Inventor 周莹邱丽娟张瑞阳万文超阳叶张颖张骞
Owner SOUTHWEST PETROLEUM UNIV
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