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Preparation method of single-crystal less-layer antimonene

An antimonene and single crystal technology is applied in the field of preparation of single crystal few-layer antimonene to achieve the effects of uniform size and thickness, preventing coagulation and high purity

Inactive Publication Date: 2016-02-03
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no report on the preparation and synthesis method of antimonene. The preparation of antimonene by the nanometerization method will have large-scale applications in energy devices such as lithium-ion batteries, or in the field of optoelectronic devices such as optical limiting devices. application

Method used

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  • Preparation method of single-crystal less-layer antimonene
  • Preparation method of single-crystal less-layer antimonene
  • Preparation method of single-crystal less-layer antimonene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] First, add 4g of antimony powder and 80ml of absolute ethanol to a 100ml wide-mouth bottle, mix well, then add 40mg of surfactant oleylamine; then, place the reaction vessel in an ultrasonic cleaning machine and ultrasonicate for 3 hours at a power of 80W; The final liquid was centrifuged at 2000r / min for 10 minutes, and the supernatant was taken out; finally, the taken out supernatant was freeze-dried for 18 hours, and the final product was antimonene.

[0023] The prepared antimonene was characterized and analyzed, and the results were as follows: figure 1 , figure 2 with image 3 shown. figure 1 It is a scanning electron microscope image. It can be seen from the image that antimonene has a uniform shape and a uniform size, and the size is about 2.5 μm. figure 2 The antimonene thickness distribution statistical map obtained according to the test results of the atomic force microscope is obtained from figure 2 It can be seen that more than 75% of antimonene has ...

Embodiment 2

[0025] First, add 4g of antimony powder and 80ml of absolute ethanol to a 100ml jar, mix well, and then add 40mg of surfactant sodium lauryl sulfate; then, place the reaction vessel in an ultrasonic cleaner, and ultrasonicate with 80W power 3h; centrifuge the ultrasonicated liquid at 2000r / min for 10min, and take out the supernatant; finally, freeze-dry the taken out supernatant for 18h, and the final product is antimonene.

[0026] The prepared antimonene was characterized and analyzed, and the results were as follows: Figure 4 , Figure 5 shown. Figure 4 For the scanning electron microscope image, from figure 2 It can be seen that antimonene is uniform in shape and size, and the size is about 1 μm, which shows that the use of unused surfactants can effectively regulate the size of antimonene. Figure 5 It is an HRTEM image, which shows that the prepared few-layer antimonene lattice structure is complete and clear, and it is a good single crystal, and the crystal plane ...

Embodiment 3

[0028] First, add 4g of antimony powder and 80ml of absolute ethanol to a 100ml jar, mix well, then add 40mg of surfactant sodium lauryl sulfate; then, place the reaction vessel in an ultrasonic cleaner, and ultrasonically 5h; centrifuge the ultrasonicated liquid at 2000r / min for 10min, and take out the supernatant; finally, freeze-dry the taken out supernatant for 18h, and the final product is antimonene.

[0029] The prepared antimonene was characterized and analyzed, and the results were as follows: Image 6 shown. It can be seen that the shape and size of antimonene are uniform, and the size is about 400nm. It can be seen that increasing the ultrasonic power and ultrasonic time can significantly adjust the size and shape of antimonene.

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Abstract

The invention discloses a preparation method of high-quality and large-scale novel two-dimensional material, namely, single-crystal less-layer antimonene. The liquid phase ultrasonic stripping technology is adopted, and a fifth main-group antimony nano-sheet is stripped through ultrasonic assisting of antimony powder, ethanol and surfactant. Firstly, the antimony powder and ethanol are mixed at room temperature; secondly, a proper amount of surfactant is added, the mixture is ultrasonically treated for a period of time under certain power, and then antimonene is massively prepared. Preparation process parameters are adjusted, and the size of antimonene can be adjusted. Reaction conditions are mild, the preparation process is simple, and the preparation method can be used for large-scale preparation. The less-layer antimonene prepared through the method is uniform in thickness and size, adjustable in size, high in purity and good in degree of crystallinity.

Description

technical field [0001] The invention relates to nanometer material preparation technology, in particular to a preparation method of single-crystal few-layer antimonene. Background technique [0002] Antimony is the fifth main group element. It exists stably at room temperature. It is a gray metal with silvery luster. It belongs to the hexagonal crystal arrangement state. It has a 6-fold symmetry axis or 6-fold inversion axis, which is the vertical crystallization axis of the crystal. C axis. The positive ends of the other three horizontal crystallization axes form an angle of 120 with each other. The structure of antimony is a layered structure (space group: R3mNo.166), each layer contains a connected folded six-membered ring structure, the nearest and next closest antimony atoms form a deformed octahedron, and the bonding between layers is very small. weak. [0003] In view of the above-mentioned structural characteristics of antimony, the relatively weak bonding force b...

Claims

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Application Information

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IPC IPC(8): C30B29/02C30B29/64
Inventor 曾海波霍成学薛洁宋继中严仲玉苏普喀迪尔·依比
Owner NANJING UNIV OF SCI & TECH
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