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Multi-layer graphene fiber paper and production method thereof

A technology of multi-layer graphene and fiber paper, which is applied in the direction of special paper, papermaking, and layered products, can solve the problems of reducing use efficiency, limiting practical applications, and not having super-hydrophobic surface wettability, and achieves portability and Effects of application, increasing three-dimensional storage space, increasing toughness and foldability

Active Publication Date: 2019-08-30
XI'AN PETROLEUM UNIVERSITY
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  • Application Information

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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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  • Multi-layer graphene fiber paper and production method thereof
  • Multi-layer graphene fiber paper and production method thereof
  • Multi-layer graphene fiber paper and production method thereof

Examples

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preparation example Construction

[0038] 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:

[0039] 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

[0057] 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

[0065] 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;

[0066] 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;

[0067] In step 5, repeat step 2, step 3 and step 4 altogether 8 times, finally make multi-layer graphene fiber paper.

[0068] All the other unwritten steps and parameters are the same as in Example 1.

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Abstract

The invention discloses multi-layer graphene fiber paper and a production method thereof. The production method comprises the steps of firstly, depositing a layer of graphene oxide on non-woven fabric, using a radio frequency magnetron sputtering technology to reduce an oxygen-containing functional group on the surface of the graphene oxide and to block a hydrophilic group on the surface of graphene, and meanwhile, in a radio frequency magnetron sputtering process, forming dense small pits in the surface of the graphene to increase a specific surface area of the graphene; and repeating the last step for multiple times to form multiple layers of graphene so as to finally produce the multi-layer graphene fiber paper with a hydrophobic characteristic. The formed graphene layers have certain spacing, so that an adsorbing three-dimensional storage space is expanded, by producing graphene films for multiple times, the tenacity and the foldability of the films can be improved, and carrying and application are convenient.

Description

[0001] 【Technical field】 [0002] 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. [0003] 【Background technique】 [0004] 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 spi...

Claims

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Application Information

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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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