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A kind of preparation method of hexagonal boron nitride modified oil-absorbing sponge

A hexagonal boron nitride and oil-absorbing sponge technology, which is applied in the field of oil-absorbing sponges, can solve problems such as poor mechanical properties, low recycling rate, and complicated operation, and achieve good mechanical properties, low price and easy availability

Active Publication Date: 2018-04-24
HUAWEI TEHCHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The reported oil-absorbing materials currently have problems such as preparation methods that generally require multi-step reactions, complicated operations, high costs, poor mechanical properties, and low recycling rates.

Method used

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  • A kind of preparation method of hexagonal boron nitride modified oil-absorbing sponge
  • A kind of preparation method of hexagonal boron nitride modified oil-absorbing sponge
  • A kind of preparation method of hexagonal boron nitride modified oil-absorbing sponge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 1. Cleaning of melamine sponge:

[0025] Cut a large piece of melamine sponge into small cubes of suitable size (about 2cm 3 ), and then ultrasonically cleaned twice in deionized water and absolute ethanol respectively, each time for two hours, and then removed and dried at 80°C.

[0026] 2. Dispersion of h-BN:

[0027] Use an analytical balance to accurately weigh 100 mg of multi-layer h-BN powder with a thickness of 1-2 μm and pour it into a 150 ml beaker, use a graduated cylinder to accurately measure 100 ml of deionized water and pour it into the same beaker, and then ultrasonicate the solution for more than 24 hours. Then the white emulsion obtained after ultrasonication is poured into a centrifuge tube, put into a centrifuge for 25 minutes, and the rotating speed is 5000rpm; the upper two-thirds of the supernatant obtained after centrifugation is sucked out with a disposable dropper and transferred to In a clean beaker, remove the unexfoliated or multi-layered h...

Embodiment 2

[0032] 1. The cleaning of the melamine sponge is the same as the first embodiment.

[0033] 2. Dispersion of h-BN:

[0034] Use an analytical balance to accurately weigh 200 mg of multi-layer h-BN powder h-BN powder with a thickness of 1-2 μm and pour it into a 150 ml beaker, and accurately measure 100 ml of isopropanol (IPA) with a measuring cylinder and pour it into the same beaker. The solution was then sonicated for more than 24 hours. Then the white emulsion obtained after ultrasonication is poured into a centrifuge tube, put into a centrifuge and centrifuged for 40 minutes, and the rotating speed is 3000rpm; the upper two-thirds of the supernatant obtained after centrifugation is sucked out with a disposable dropper and transferred to In a clean beaker, remove the unexfoliated or multi-layered h-BN in the lower layer to obtain a uniformly dispersed h-BN nanosheet solution.

[0035] 3. Preparation of oil-absorbing sponge:

[0036] Immerse the melamine sponge obtained i...

Embodiment 3

[0039] 1. The cleaning of the melamine sponge is the same as the first embodiment.

[0040]2. Dispersion of h-BN:

[0041] Use an analytical balance to accurately weigh 100mg of multilayer h-BN powder with a thickness of 1-2μm and pour it into a 150ml beaker, and use a measuring cylinder to accurately measure 100ml of N-methylpyrrolidone (NMP) and pour it into the same beaker , the solution was then sonicated for more than 24 hours. Then the white emulsion obtained after ultrasonication is poured into a centrifuge tube, put into a centrifuge for 20 minutes, and the rotating speed is 6000rpm; the upper two-thirds of the supernatant obtained after centrifugation is sucked out with a disposable dropper, and transferred to In a clean beaker, remove the unexfoliated or multi-layered h-BN in the lower layer to obtain a uniformly dispersed h-BN nanosheet solution.

[0042] 3. Preparation of oil-absorbing sponge:

[0043] Immerse the melamine sponge obtained in step 1 into the unif...

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Abstract

The invention discloses a preparation method of hexagonal boron nitride modified oil absorption sponge. The preparation method combines a two-dimensional material hexagonal boron nitride with a common three-dimensional porous structural material melamine sponge and comprises the following steps: (1) carrying out ultrasonic cleaning on the melamine sponge; (2) dispersing multi-layer h-BN to obtain uniformly dispersed h-BN nanosheet solution; and (3) immersing the cleaned melamine sponge into uniformly dispersed h-BN nanosheet solution to be fully infiltrated, so that the hexagonal boron nitride modified oil absorption sponge is obtained. The hexagonal boron nitride modified oil absorption sponge is simple in the preparation method, has good hydrophobicity and strong oil product and organic solvent adsorption capacity and is high in repeated utilization factor.

Description

technical field [0001] The invention relates to an oil-absorbing sponge, in particular to a preparation method of a hexagonal boron nitride modified oil-absorbing sponge. Background technique [0002] Nowadays, with the development of the economy, the dependence on oil and other demand is increasing, and the marine transportation and use of crude oil are developing faster and faster; consequently, various oily wastewater, waste liquid, and marine oil spills are caused Pollution of water resources such as oceans has become one of the major environmental problems we face. Petroleum will also bring a lot of organic solvents, which not only have safety hazards such as fire and explosion, but also cause irreversible and serious harm to the environment, human health, life and property safety, which need to be effectively contained and resolved. [0003] Among all kinds of sewage treatment methods, the use of oil-absorbing materials to absorb and recover is the simplest method, so...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D17/022
CPCB01D17/0202
Inventor 晏超周颖张凯丽
Owner HUAWEI TEHCHNOLOGIES CO LTD
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