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MXene/GO composite coating and preparation method and application thereof

A composite coating and coating technology, applied in the direction of coating, electrolytic coating, electrophoretic plating, etc., can solve the problems of poor bonding between the coating and the substrate, and long time consumption

Pending Publication Date: 2021-09-07
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods have the disadvantages of long preparation process and poor adhesion between the obtained coating and the substrate.

Method used

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  • MXene/GO composite coating and preparation method and application thereof
  • MXene/GO composite coating and preparation method and application thereof
  • MXene/GO composite coating and preparation method and application thereof

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preparation example Construction

[0025] The invention provides a kind of preparation method of MXene / GO composite coating, comprises the following steps;

[0026] Disperse MXene and graphene oxide in water to obtain MXene / GO mixed solution;

[0027] Using the polar plate as the cathode and the anode, and using the MXene / GO mixed solution as the deposition medium, electrophoretic deposition is carried out to obtain a deposited coating;

[0028] The deposited coating is dried to obtain the MXene / GO composite coating.

[0029] In the invention, MXene and graphene oxide are dispersed in water to obtain a mixed solution of MXene / GO.

[0030] In the present invention, the total concentration of the MXene / GO mixed solution is preferably 1 mg / mL.

[0031] In the present invention, the preferred mass ratio of MXene to graphene oxide is 1:1.5˜1.5:1, more preferably 1:1.5, 1.5:1 or 1:1.

[0032] In the present invention, the MXene preferably etches Ti by acid and fluoride salt 3 AlC 2 The acid is preferably hydroch...

Embodiment 1

[0047] Step 1. Disperse MXene and GO in ultrapure water, and after 30 min of ultrasonic treatment, the ultrasonic power is 40KHz to obtain a uniformly mixed MXene / GO solution with a concentration of 1 mg / mL, wherein the mass ratio of MXene and GO is 1:1 .

[0048] Step 2: Soak the monocrystalline silicon wafer in piranha solution (concentrated sulfuric acid: 30% hydrogen peroxide=7:3 (V:V)) for 30 minutes. The treated silicon wafer was used as the cathode and the anode, the distance between the cathode and the anode was 15mm, and the mixed solution of MXene / GO was used as the deposition medium, and the electrophoretic deposition was performed at a voltage of 35V for 30min.

[0049]Step 3: Dry the deposited coating at a temperature of 25° C. and a drying time of 4 hours to obtain an MXene / GO composite coating with MXene:GO=1:1.

[0050] figure 1 The optical picture of the MXene / GO composite coating that is prepared in embodiment 1; figure 2 For the scanning electron microsc...

Embodiment 2

[0052] Step 1. Disperse MXene and GO in ultrapure water, and after 30 min of ultrasonic treatment, the ultrasonic power is 40KHz to obtain a uniformly mixed MXene / GO solution with a concentration of 1 mg / mL, wherein the mass ratio of MXene and GO is 1.5:1 .

[0053] Step 2: Soak the monocrystalline silicon wafer in piranha solution (concentrated sulfuric acid: 30% hydrogen peroxide=7:3 (V:V)) for 30 minutes. The treated silicon wafer was used as the cathode and the anode, the distance between the cathode and the anode was 15mm, and the mixed solution of MXene / GO was used as the deposition medium, and the electrophoretic deposition was performed at a voltage of 35V for 30min.

[0054] Step 3, drying the deposited coating at room temperature, the temperature is 25° C., and the drying time is 4 hours to obtain an MXene / GO composite coating with MXene:GO=1.5:1.

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Abstract

The invention provides an MXene / GO composite coating and a preparation method and application thereof, and belongs to the technical field of nano composite materials. The preparation method comprises the following steps that MXene and graphene oxide are dispersed in water to obtain an MXene / GO mixed solution; electrophoretic deposition is carried out by taking polar plates as a cathode and an anode and the MXene / GO mixed solution as a deposition medium to obtain a deposition coating; and the deposition coating is dried, and the MXene / GO composite coating is obtained. According to the method for rapidly and simply preparing the MXene / GO composite coating, the MXene / GO composite coating prepared through the electrophoretic deposition method is uniform and flat in surface and controllable in thickness, meanwhile, under the action of an electric field, combination of negatively charged MXene and GO and the polar plates is firmer, excellent antifriction and abrasion resistance is shown, and the high-quality composite coating can be rapidly obtained.

Description

technical field [0001] The invention relates to the technical field of nanocomposite materials, in particular to an MXene / GO composite coating and its preparation method and application. Background technique [0002] Since the discovery of graphene, two-dimensional materials have shown excellent physical, chemical, electronic and optical properties due to their unique two-dimensional layered structure, and have broad application prospects in the fields of energy storage, catalysis, sensors and optoelectronic devices. . Graphene oxide (GO), as an important derivative of graphene, has a graphene-like structure and has abundant oxygen-containing functional groups on the surface, such as hydroxyl, carbonyl and carboxyl. The existence of these functional groups makes the surface of GO negatively charged, and also makes up for the disadvantage of poor hydrophilicity of graphene materials, and is beneficial to the modification of GO. [0003] In recent years, a new type of two-di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25D13/02C25D13/20
CPCC25D13/02C25D13/20
Inventor 李章朋苗晓南王金清
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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