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Two-dimensional material powder preparation method and two-dimensional material powder dispersion liquid preparation method

A two-dimensional material and dispersion liquid technology, applied in chemical instruments and methods, binary selenium/tellurium compounds, nitrogen-metal/silicon/boron binary compounds, etc., can solve problems such as high cost, complicated process, and long time consumption , to achieve the effect of simple operation, wide range of sources and good dispersion performance

Active Publication Date: 2017-06-13
THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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Problems solved by technology

[0007] Aiming at the problems existing in the prior art that the process is complicated, the cost is high, the time is long, and the versatility of the two-dimensional material powder and its dispersion in different solvents is poor, and it is difficult to realize large-scale production, the present invention provides a two-dimensional Preparation method of material powder and its dispersion

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  • Two-dimensional material powder preparation method and two-dimensional material powder dispersion liquid preparation method
  • Two-dimensional material powder preparation method and two-dimensional material powder dispersion liquid preparation method
  • Two-dimensional material powder preparation method and two-dimensional material powder dispersion liquid preparation method

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[0069] The specific embodiment part of the present invention provides a method for preparing a two-dimensional material powder, and the method includes the following steps:

[0070] (1) Ball milling the raw material of the two-dimensional material to obtain a solid material;

[0071] (2) adding an initial dispersion solvent to the solid material obtained in step (1), and performing initial ultrasonic treatment to obtain a dispersion of the two-dimensional material in the initial dispersion solvent;

[0072] (3) Add a precipitating agent to the dispersion of the two-dimensional material in the primary dispersion solvent in step (2), and perform centrifugation and drying after the precipitation is complete to obtain a two-dimensional material powder.

[0073] The specific embodiment part of the present invention also provides a preparation method of the two-dimensional material powder dispersion prepared by the above method, the method is:

[0074] Add the above-mentioned two-d...

Embodiment 1

[0077] This embodiment provides a MoS 2 A method for preparing a two-dimensional material powder, the method comprising the following steps:

[0078] (1) 1 g of raw material MoS with an average size of 5 μm 2 (The scanning electron microscope such as figure 1 shown), 2g of grinding aid sodium chloride and 10g of agate balls with a diameter of 0.5mm were mixed, ball milled for 0.5h, and then the agate balls were separated, and the obtained samples were washed with water for several times until the sodium chloride was completely washed out, and dried in vacuum , to obtain solid material;

[0079] (2) Add 1L of primary dispersion solvent N-methylpyrrolidone (NMP) to the solid material obtained in step (1), and ultrasonicate with 100W ultrasonic power for 12h to obtain MoS 2 Dispersion in primary dispersion solvent;

[0080] (3) To step (2) MoS 2 Add 1L of precipitant ethyl acetate to the dispersion in the primary dispersion solvent, and after it has fully precipitated, centr...

Embodiment 2

[0085] This embodiment provides a MoS 2 The preparation method of the two-dimensional material powder is the same as that in Example 1.

[0086] This embodiment also provides the above-mentioned MoS 2 The preparation method of two-dimensional material powder ethanol dispersion liquid, described method is as follows:

[0087] 0.1g of the above MoS 2 The two-dimensional material powder was added to 5mL redispersant ethanol, and the power of 200W was ultrasonicated for 5h to obtain MoS 2 Two-dimensional material powder ethanol dispersion, its appearance photo is as follows image 3 shown.

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Abstract

The invention provides a two-dimensional material powder preparation method and a two-dimensional material powder dispersion liquid preparation method. The two-dimensional material powder preparation method comprises the following steps of: carrying out ball milling on a two-dimensional raw material to obtain a solid material; adding a primary dispersing solvent to the obtained solid material, and carrying out primary ultrasonic treatment to obtain the dispersion liquid of the two dimensional material in the primary-dispersing solvent; and adding a precipitant to the dispersion liquid of the two-dimensional material in the primary dispersing solvent, carrying out centrifugal separation and drying after completely precipitating to obtain two-dimensional material powder. The two-dimensional material powder dispersion liquid preparation method comprises the following steps of: adding the two-dimensional material powder to a secondary dispersing agent, and then carrying out ultrasonic treatment to obtain the dispersion liquid of the two-dimensional material in the secondary dispersing agent. Compared with traditional methods, the preparation methods have the advantages of wide sources, simple and convenient operation and the like. The prepared two-dimensional material powder sample has a good dispersion effect in multiple solvents, and the concentration of the two-dimensional material powder dispersion liquid is relatively high. The preparation methods have important application values for the practical application and large-scale production of the two-dimensional material.

Description

technical field [0001] The invention belongs to the technical field of preparation of inorganic nanometer materials, and relates to a preparation method of two-dimensional material powder and its dispersion liquid. Background technique [0002] Two-dimensional materials represented by graphene have attracted much attention due to their outstanding optical, electrical, sensing and energy storage properties. In recent years, two-dimensional materials that have been studied more are mainly graphene and graphene-like two-dimensional materials. Among them, the more typical graphene-like two-dimensional materials are transition metal dichalcogenides, such as MoS 2 and WS 2 It is a layered structure composed of transition metals of group IVB, VB, VIB, VIIB and VIII elements in the periodic table of elements and chalcogen nonmetal elements such as S, Se and Te. In addition, graphene-like two-dimensional materials also include hexagonal BN (h-BN) and the like. [0003] So far, po...

Claims

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Application Information

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IPC IPC(8): C01G41/00C01G39/06C01B21/06C01B19/04C01B32/21
CPCC01B19/007C01B21/0648C01G39/06C01G41/00C01P2002/84
Inventor 张勇韩春春
Owner THE NAT CENT FOR NANOSCI & TECH NCNST OF CHINA
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