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Two-dimensional material quantum dot composite material and preparation method thereof

A technology of quantum dot material and two-dimensional material, which is applied in the field of wear-free two-dimensional material quantum dot composite material and its preparation, can solve the problem of inability to maintain the lubrication effect, etc. Effect

Active Publication Date: 2021-03-05
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to limited working conditions, such as high and low temperature, high vacuum, strong radiation, humidity, smoke and other special working conditions, it is impossible to maintain a good lubrication effect

Method used

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  • Two-dimensional material quantum dot composite material and preparation method thereof
  • Two-dimensional material quantum dot composite material and preparation method thereof
  • Two-dimensional material quantum dot composite material and preparation method thereof

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preparation example Construction

[0053] The embodiment of the present invention also provides a method for preparing the above-mentioned two-dimensional material quantum dot composite material, including the following steps:

[0054] (1) Place the substrate on the bottom of the container;

[0055] (2) Add the two-dimensional material and the quantum dot material respectively into the solvent and disperse evenly, and pour the solution into the container;

[0056] (3) After the two-dimensional material and the quantum dot material are all deposited on the surface of the substrate, the substrate is taken out and left to stand until the solvent evaporates completely, and the two-dimensional material quantum dot composite material is obtained.

[0057] Preferably, the preparation method of the multi-component two-dimensional composite material consists of the above steps.

[0058] In the embodiment of the present invention, the preparation method is adsorbed on the substrate through deposition, which is applicabl...

Embodiment 1

[0075] First place the silicon wafer gently on the bottom of the glass beaker, and add 10mL of absolute ethanol to the glass beaker; then slowly add 30mg of two-dimensional titanium carbide powder and graphene quantum dot solution with a weight of 2mg into a beaker filled with absolute ethanol; after the beaker is sealed, ultrasonically vibrate for 1 hour at room temperature (ultrasonic frequency is 20kHz, ultrasonic power is 100W), and then stand in room temperature for 24 hours to make all the materials in the beaker Deposit on the surface of the silicon wafer to obtain the non-abrasive two-dimensional material graphene quantum dot (solution) composite material semi-finished product; use tweezers to gently clamp the obtained non-abrasive two-dimensional material graphene quantum dot (solution) composite material semi-finished product from the beaker , placed in an inert atmosphere, protected from light, and kept at a temperature lower than 8°C under protection, until the anhy...

Embodiment 2

[0077] First place the silicon wafer gently on the bottom of the glass beaker, and add 10mL of absolute ethanol to the glass beaker; then slowly add 30mg of two-dimensional titanium carbide powder and 30mg of graphene quantum dot powder to the beaker filled with absolute ethanol After the beaker is sealed, ultrasonically vibrate for 1 hour at room temperature (ultrasonic frequency is 20kHz, ultrasonic power is 100W), and then it is left to stand in room temperature environment for 24 hours, so that all the materials in the beaker are deposited on the surface of the silicon wafer, and no Abrasion two-dimensional material graphene quantum dot (powder) composite material semi-finished product; Gently clamp the non-abrasive two-dimensional material graphene quantum dot (powder) composite material semi-finished product from the beaker with tweezers, place it under an inert atmosphere, avoid Light, under the protection of the temperature below 8 ℃, let it stand still, and wait for th...

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Abstract

The invention provides a two-dimensional material quantum dot composite material and a preparation method thereof. The two-dimensional material quantum dot composite material comprises a two-dimensional material and a quantum dot material; the two-dimensional material and the quantum dot material are deposited on the surface of a base material. The preparation method of the two-dimensional material quantum dot composite material comprises the following steps of: firstly, placing the base material at the bottom of a container; secondly, adding the two-dimensional material and the quantum dot material into a solvent, uniformly dispersing the materials, and pouring an obtained solution into the container; and finally, taking out the base material after the two-dimensional material and the quantum dot material are completely deposited on the surface of the base material, and making the base material stand still until the solvent is completely evaporated to obtain the two-dimensional material quantum dot composite material. The preparation method of the prepared two-dimensional material quantum dot composite material is simple, and does not need post-treatment; the two-dimensional material quantum dot composite material a wide application range, and can be used as a solid lubricant in special working conditions of high and low temperature, high vacuum, strong radiation and the like,and severe environments of dust, moisture, seawater and the like.

Description

technical field [0001] This article relates to the surface treatment technology of mechanical engineering, specifically a two-dimensional material quantum dot composite material and its preparation method, especially a wear-free two-dimensional material quantum dot composite material and its preparation method. Background technique [0002] Two-dimensional materials specifically refer to a class of layered solid materials with ordered structures, grown in two-dimensional planes, and ultrathin in the third dimension (Li et al., Superlubricity between MoS 2 Monolayers, Advanced Materials 2017, 29(27), 1701474), two-dimensional material composite materials are prepared by combining two-dimensional materials with another type of nanomaterials, which have the advantages of both two-dimensional materials and another type of nanomaterials, making the two Dimensional material composites exhibit excellent lubricating properties. When friction occurs in a normal temperature environm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/67C10M125/08B82Y20/00B82Y30/00C10N30/06
CPCC09K11/67C10M125/08B82Y20/00B82Y30/00C10M2201/061
Inventor 尹绚陈新春雒建斌
Owner TSINGHUA UNIV
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