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Preparation method of hydrophobic sponge based on graphene/CNT (carbon nano-tube) composite material

A hydrophobic sponge and composite material technology, applied in the field of hydrophobic sponge preparation, can solve the problems of environmental pollution, energy waste, and destruction of marine ecological balance, and achieve excellent adsorption performance, good hydrophobicity, and improved hydrophobicity

Inactive Publication Date: 2019-06-18
SHANDONG XINGHUO SCI TECH INSTITYTE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to statistics, 3000-5000kt of oil spills into the sea due to various accidents in the world every year, which not only seriously damages the ecological balance of the ocean, pollutes the environment, but also causes a huge waste of energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of preparation method of the hydrophobic sponge based on graphene / CNT composite material, comprises the steps:

[0021] (1) Clean the melamine sponge in ethanol for 10 minutes, and dry it in a vacuum oven to obtain a clean melamine sponge;

[0022] (2) Preparation of graphene oxide: under ice-bath conditions, add natural graphite in concentrated sulfuric acid, and constantly stir, add oxidizing agent, and heat up reaction, then use hydrogen peroxide, dilute hydrochloric acid and deionized water, wash repeatedly, Dry at 40°C to obtain a graphene oxide solid, and then finely grind the graphene oxide solid and microwave treatment to obtain the graphene oxide; the mass ratio of natural graphite, concentrated sulfuric acid, and oxidant is 3:80:1;

[0023] (3) Add the graphene oxide obtained in step 2 into deionized water, and ultrasonically disperse for 1h to obtain a graphene oxide suspension; the mass ratio of graphene oxide and deionized water is 1:100;

[0024] (...

Embodiment 2

[0029] A kind of preparation method of the hydrophobic sponge based on graphene / CNT composite material, comprises the steps:

[0030] (1) Clean the melamine sponge in ethanol for 20 minutes, and dry it in a vacuum oven to obtain a clean melamine sponge;

[0031] (2) Preparation of graphene oxide: under ice-bath conditions, add natural graphite in concentrated sulfuric acid, and constantly stir, add oxidizing agent, and heat up reaction, then use hydrogen peroxide, dilute hydrochloric acid and deionized water, wash repeatedly, Dry at 40°C to obtain a graphene oxide solid, and then finely grind the graphene oxide solid and microwave treatment to obtain the graphene oxide; the mass ratio of natural graphite, concentrated sulfuric acid, and oxidant is 10:300:3;

[0032] (3) Add the graphene oxide obtained in step 2 into deionized water, and ultrasonically disperse for 3h to obtain a graphene oxide suspension; the mass ratio of graphene oxide and deionized water is 5:450;

[0033]...

Embodiment 3

[0038] A kind of preparation method of the hydrophobic sponge based on graphene / CNT composite material, comprises the steps:

[0039] (1) Clean the melamine sponge in ethanol for 14 minutes, and dry it in a vacuum oven to obtain a clean melamine sponge;

[0040] (2) Preparation of graphene oxide: under ice-bath conditions, add natural graphite in concentrated sulfuric acid, and constantly stir, add oxidizing agent, and heat up reaction, then use hydrogen peroxide, dilute hydrochloric acid and deionized water, wash repeatedly, Dry at 40°C to obtain a graphene oxide solid, and then finely grind the graphene oxide solid and microwave treatment to obtain the graphene oxide; the mass ratio of natural graphite, concentrated sulfuric acid, and oxidant is 5:150:2;

[0041] (3) Add the graphene oxide obtained in step 2 into deionized water, and ultrasonically disperse for 1h to obtain a graphene oxide suspension; the mass ratio of graphene oxide and deionized water is 3:200;

[0042] ...

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PUM

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Abstract

The invention discloses a preparation method of hydrophobic sponge based on a graphene / CNT (carbon nano-tube) composite material. The method includes the steps: (1) clean melamine sponge preparation;(2) graphene oxide preparation; (3) graphene oxide suspension liquid preparation; (4) graphene oxide / carbon nano-tube mixed solution preparation; (5) adding hydrazine hydrate and clean melamine spongeacquired in the step (1) into graphene oxide / carbon nano-tube mixed solution acquired in the step (4), placing mixture into a microwave chemical reactor, placing the mixture into an ultrasonic cleaner to ultrasonically disperse the mixture for 30-50 minutes after the sponge is changed into black from white, taking out the sponge, washing redundant graphene on the surface of the sponge by deionized water, and placing the mixture into a drying oven with the temperature of 80-100 DEG C to dry the mixture; (6) dimethyl siloxane / normal hexane solution preparation; (7) preparation of the hydrophobic sponge based on the graphene / CNT composite material. The hydrophobic sponge has excellent absorption property and good hydrophobic property.

Description

technical field [0001] The invention belongs to the technical field of composite material preparation, and in particular relates to a preparation method of a graphene / CNT composite material-based hydrophobic sponge. Background technique [0002] With the increase of industrial oily wastewater discharge and the frequent occurrence of offshore oil spills, how to efficiently separate oil from water has become one of the current research hotspots. According to statistics, 3,000 to 5,000 kt of oil spills into the sea due to various accidents in the world every year, which not only seriously destroys the ecological balance of the ocean, pollutes the environment, but also causes a great waste of energy. In recent years, studies have found that solid surfaces with both superhydrophobicity and superoleophilicity are an effective way to solve oil-water separation. The development direction of oil-absorbing agents is that the synthetic oil-absorbing speed is fast, the application area...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/28
Inventor 张成如
Owner SHANDONG XINGHUO SCI TECH INSTITYTE
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