A kind of multilayer graphene fiber paper and preparation method thereof

A multi-layer graphene and fiber paper technology, applied in special paper, papermaking, layered products, etc., can solve the problems of reduced use efficiency, lack of super-hydrophobic surface wettability, limited practical application, etc. Application, the effect of increasing three-dimensional storage space, increasing toughness and foldability

Active Publication Date: 2021-08-27
XI'AN PETROLEUM UNIVERSITY
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Problems solved by technology

The performance of graphene sponge in removing petroleum products and toxic organic solvents far exceeds that of traditional adsorbents used. However, since graphene does not have super-hydrophobic surface wetting properties, these materials absorb oil phase liquids at the same time It will also absorb part of the water phase liquid, and this poor selectivity restricts its practical application in the oil-water separation process and reduces the use efficiency

Method used

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  • A kind of multilayer graphene fiber paper and preparation method thereof
  • A kind of multilayer graphene fiber paper and preparation method thereof
  • A kind of multilayer graphene fiber paper and preparation method thereof

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preparation example Construction

[0033] Below in conjunction with accompanying drawing, the present invention is described in further detail, the present invention discloses a kind of multi-layer graphene fiber paper and preparation method thereof; figure 1 , the preparation method specifically comprises the following steps:

[0034] Step 1, the graphene oxide stock solution is prepared from natural graphite powder by the improved Hummers method, the graphene oxide stock solution is vacuum-filtered to obtain graphene oxide, and the graphene oxide after vacuum-suction filtration is ultrasonically dispersed in deionized water to obtain oxidized Preliminary ultrasonic dispersion of graphene, the initial ultrasonic dispersion of graphene oxide with hydrochloric acid solution to remove metal ions, hydrochloric acid solution to remove metal ions is better, and then repeatedly wash graphene oxide with deionized water to remove the surface of graphene oxide acid solution until the pH value of the preliminary ultrason...

Embodiment 1

[0052] Step 1, the graphene oxide stock solution is prepared by the improved Hummers method from natural graphite powder, which is a bright yellow mixture, and the graphene oxide bright yellow mixture is suction-filtered, and cleaned with 1000mL of 10wt.% hydrochloric acid solution to remove metal ions, and then deionized water Wash and remove the acid solution repeatedly until the pH value of the preliminary ultrasonic dispersion is neutral; the treated graphene oxide preliminary ultrasonic dispersion is suction-filtered, and the suction-filtered product is dried under vacuum at 60°C to obtain the pretreated Graphene oxide powder. Put 50 mg of pretreated graphene oxide powder into 100 mL of deionized water for ultrasonic dispersion for 1 h, and then centrifuge the obtained graphene oxide solution at a speed of 4800 r / min to obtain a uniform and stable yellow-brown graphene oxide clarified solution, It is a precursor solution, wherein the concentration of graphene oxide is 0.5...

Embodiment 2

[0060] In step 1, put 10 mg of the pretreated graphene oxide powder into 100 mL of deionized water for ultrasonic dispersion for 1 h, and obtain a precursor solution with a graphene oxide concentration of 0.1 mg / mL after centrifugation;

[0061] In step 3, the sputtering deposition temperature is 22°C, the sputtering power is 100W, and the sputtering is 1h, and the thickness of the formed ZnO film is 350nm; a layer of graphene film is formed;

[0062] In step 5, repeat step 2, step 3 and step 4 altogether 8 times, finally make multi-layer graphene fiber paper.

[0063] All the other unwritten steps and parameters are the same as in Example 1.

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Abstract

The invention discloses a multi-layer graphene fiber paper and a preparation method thereof. In the preparation method, a layer of graphene oxide is first deposited on a non-woven fabric, and oxygen-containing functional groups on the surface of the graphene oxide are reduced by radio frequency magnetron sputtering technology. And block the hydrophilic groups on the surface of graphene, and at the same time form dense small pits on the surface of graphene during the radio frequency magnetron sputtering process, increasing the specific surface area of ​​graphene; through repeated repetitions, multi-layer graphene is formed, Finally, a multi-layer graphene fiber paper with hydrophobic properties is prepared; there is a certain distance between the formed graphene layers, which increases the three-dimensional storage space for adsorption, and the multiple preparation of graphene films can increase the toughness and foldability of the film, which is convenient Carry and apply.

Description

【Technical field】 [0001] The invention belongs to the technical field of oil-water separation and adsorption, and in particular relates to a multilayer graphene fiber paper and a preparation method thereof. 【Background technique】 [0002] The ocean accounts for 71% of the earth's surface area and provides human beings with abundant resources. Ocean pollution has seriously threatened human survival and the health of the ecological environment. Oil spills are one of the main forms of human pollution of the ocean. Oil spill accidents mainly come from the rupture of oil exploration platform facilities, ship capsizing, grounding, damage to oil storage and oil transportation facilities during transportation, etc. Although oil spills are sporadic accidents, the amount of each leak ranges from millions of tons to tens of thousands of tons. Oil-absorbing materials are one of the earliest means of dealing with marine oil spills as a physical method to deal with oil spills. It is a si...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H27/32B32B9/04
CPCB32B9/04D21H27/32
Inventor 丁继军陈海霞傅海威李辉栋刘颖刚
Owner XI'AN PETROLEUM UNIVERSITY
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