Two-dimensional material, preparation and assembly method and application of two-dimensional material in artificial nerve component

A technology of two-dimensional materials and assembly methods, applied in the field of two-dimensional materials, can solve problems such as unfavorable applications, small size, and large thickness of two-dimensional materials

Pending Publication Date: 2021-09-07
TSINGHUA BERKELEY SHENZHEN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ultrasonic-assisted exfoliation is a commonly used method, but the two-dimensional materials obtained by ultrasonic-assisted exfoliation are usually thicker and smaller in size, which is not conducive to subsequent applications.

Method used

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  • Two-dimensional material, preparation and assembly method and application of two-dimensional material in artificial nerve component
  • Two-dimensional material, preparation and assembly method and application of two-dimensional material in artificial nerve component
  • Two-dimensional material, preparation and assembly method and application of two-dimensional material in artificial nerve component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0081] This embodiment provides a two-dimensional material. The two-dimensional material is high-quality two-dimensional titanium dioxide. The specific preparation process includes the following steps:

[0082] (1) Take 10.4 g of rutile phase titanium dioxide powder, mix with 2.4 g of potassium carbonate and 0.8 g of lithium carbonate, and calcined at 1000° C. for 5 hours to obtain a calcined product. After grinding at room temperature, calcined at 1000° C. for 20 hours to obtain the final calcined product.

[0083] (2) 1 g of the final calcined product was mixed with 200 mL of 1 mol / L hydrochloric acid solution and stirred for 4 days, so that hydrogen ions were fully intercalated into the titanium dioxide layer of the calcined product to obtain a primary intercalation product.

[0084] (3) Immerse the primary intercalation product in 10% w / v tetrabutylammonium hydroxide (TBAOH) solution for 5 hours, using TBA + The ions open up the interlayers to obtain secondary intercalatio...

Embodiment 2

[0088] This embodiment provides a two-dimensional film, the two-dimensional film is ultra-thin large-area two-dimensional titanium dioxide, assembled from the two-dimensional material in Example 1, the assembly method is as follows image 3 As shown, it specifically includes the following steps:

[0089] (1) Take 3 mL of the initial two-dimensional titanium dioxide solution after shaking for 2 days in Example 1, and evaporate it to 99% dryness at 80° C. under normal pressure. Then directly add 8 mL of volatile organic solvent (the volume ratio of ethanol and chloroform is 1:1), ultrasonically disperse for 24 hours, and prepare a dispersion liquid of 0.3 mg / mL titanium dioxide two-dimensional nanosheets.

[0090] (2) Wash the pre-prepared sink with ethanol and ultrapure water for 3 times continuously, and mark the effective compression area as 105cm 2 , to fix the starting positions of the sliders at both ends.

[0091] (3) Slowly fill the ultrapure water into the water tank ...

Embodiment 3

[0100] This embodiment provides a two-dimensional film. The two-dimensional film is a large-area and highly transparent titanium dioxide ultra-thin film. thin glass.

[0101] The photos of the large-area and highly transparent titanium dioxide ultra-thin film prepared by this example are as follows: Figure 9 As shown, it can be seen from the figure that the prepared titanium dioxide nanosheet assembled film is extremely transparent, and the background of the part covered by the assembled film on the right is still clearly visible.

[0102] Take the assembled films with different numbers of layers prepared by different pulling times, and measure their transmittance for 550nm light. The results are as follows: Figure 10 As shown, it can be seen from the figure that the transmittances of the high-transmittance films with different layers provided in this embodiment are all greater than 98% under 550nm light.

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Abstract

The invention discloses a two-dimensional material, a preparation method, an assembly method and application of the two-dimensional material in an artificial nerve component. The preparation method of the two-dimensional material comprises the following steps: mixing a bulk phase material with carbonate, and calcining to obtain a calcined product; mixing the calcined product with protonic acid, and carrying out intercalation reaction to obtain a primary intercalation product; mixing the primary intercalation product with organic alkali, and continuing the intercalation reaction to obtain a secondary intercalation product; and mechanically stripping a secondary intercalation product in a liquid phase to obtain the two-dimensional material, wherein the carbonate comprises lithium carbonate and potassium carbonate. The combination of potassium carbonate and lithium carbonate and the bulk phase material are calcined, so that the material is changed into a layered material and can be effectively stripped; then hydrogen ions are inserted into the interlayer through mixing with protonic acid, and organic alkali is further inserted into the interlayer, so that the interlayer acting force is weakened to the greatest extent; and finally, by applying mechanical force in a liquid phase for stripping, the two-dimensional material which is larger in size, thinner in thickness and easier for subsequent assembly can be obtained.

Description

technical field [0001] This application relates to the technical field of two-dimensional materials, in particular to two-dimensional materials and their preparation and assembly methods and their application in artificial neuron devices. Background technique [0002] Since the discovery of graphene in 2004, the research on graphene-like two-dimensional materials has attracted extensive attention from experts in the fields of physics, chemistry, materials science, and electronics. Researchers discovered a series of novel physical phenomena in two-dimensional materials, which greatly broadened its application fields. For example, the structure of two-dimensional materials is significantly different from that of traditional three-dimensional materials. Because the vertical scale is much smaller than the horizontal scale, electrons in two-dimensional materials can only move freely in two dimensions in the horizontal plane. This special structure makes two-dimensional materials...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G23/047B82Y40/00C01B32/194C01B21/064C01B19/04G06N3/063G06N3/067
CPCC01G23/047B82Y40/00C01G23/08C01B32/194C01B21/064C01B19/007G06N3/063G06N3/0675C01P2004/04C01P2002/20
Inventor 刘碧录王婧云滕长久张荣杰
Owner TSINGHUA BERKELEY SHENZHEN INST
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