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Preparation method of stanene powder

A technology of powder and stannene, applied in the field of preparation of two-dimensional new materials, can solve problems that are difficult to have practical application

Inactive Publication Date: 2017-06-13
XIAMEN HOLY ISLAND OF METAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, until now, topological insulator properties can only be observed at extremely low temperatures (below 10K), making it difficult to have practical applications

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Add 20mL of dilute phosphoric acid to a 100ml beaker, and add 0.01g of tin powder to it, then place the flask in an ultrasonic device for ultrasonic treatment, the ultrasonic frequency is 15Hz, the power density is 100w, and the treatment time is 72h to obtain intercalated tin powder dispersion; after the ultrasonic treatment is completed, the intercalation dispersed tin powder liquid is filtered, and the filtered solid is washed several times with deionized water, and then dried in vacuum at 50°C to constant weight to obtain solid intercalated tin pink.

[0040] Take 100mg of the above-mentioned solid intercalation tin powder and add it to 20mL of ammonium perchlorate with a concentration of 0.05g / mL, and place it in an ultrasonic device again for ultrasonic treatment, ultrasonic vibration and dispersion for 72h, ultrasonic frequency 15Hz, power density 100w, and then The obtained suspension was centrifuged at 3000 rpm for 10 min, the supernatant was discarded, and the...

Embodiment 2

[0043] Add 20mL of N,N'-dimethylformamide to a 100ml beaker, and add 0.05g of tin powder to it, then place the flask in an ultrasonic device for ultrasonic treatment, the ultrasonic frequency is 15Hz, and the power density is 100w, The treatment time is 72 hours to obtain the intercalated tin powder dispersion; after the ultrasonic treatment is completed, the intercalated dispersed tin powder is filtered, and the filtered solid is washed several times with absolute ethanol, and then dried in vacuum at 50°C to Constant weight, to obtain solid intercalation tin powder.

[0044] Take 100mg of the above solid intercalation tin powder and add it to 20mL of p-aminoazophenyl alcohol solution with a concentration of 0.05g / mL, and place it in an ultrasonic device again for ultrasonic treatment. Ultrasonic vibration is dispersed for 48h, ultrasonic frequency is 15Hz, and power density is 100w , and then centrifuge the obtained suspension at 3000 rpm for 10 min, discard the supernatant, ...

Embodiment 3

[0047] Add 0.5mol / L NaPF aqueous solution to a 100ml beaker, and add 0.1g tin powder to it, then place the flask in an ultrasonic device for ultrasonic treatment, the ultrasonic frequency is 15Hz, the power density is 100w, and the treatment time is 24h , to obtain the intercalated dispersed tin powder liquid; after the ultrasonic treatment is completed, the intercalated tin powder dispersed liquid is filtered, and the filtered solid is washed several times with deionized water, and then dried in vacuum at 50°C to constant weight, Thus, solid intercalation tin powder is obtained.

[0048] Take 100mg of the above-mentioned solid intercalation tin powder and add it to 20mL ethanol solution of p-benzenesulfonyl hydrazide with a concentration of 0.05g / mL, and place it in an ultrasonic device again for ultrasonic treatment. Ultrasonic vibration is dispersed for 48 hours, the ultrasonic frequency is 15Hz, and the power density is 100w , and then the obtained suspension was centrifug...

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Abstract

The invention provides a preparation method of stanene powder. The preparation method comprises the following steps: cooling a tin ingot with a content of 99.9 percent to minus 20 degrees, so that the tin ingot can be automatically converted into powder, preparing the tin powder into intercalation tin powder, then preparing the intercalation tin powder into a solid mixture of tin powder and a chemical foaming agent, increasing a gap among the intercalation tin powder by virtue of the two steps, so that the intercalation tin powder can easily form stanene; and then microwave processing the solid mixture of the tin powder and the chemical foaming agent to prepare a single-layer to 30-layer finished product stanene, wherein the thickness of a flake layer is 0.5 to 15 nm, and the size is between 50nm and 4000nm. Therefore, the prepared stanene is moderate and uniform in size; and moreover, the process is simple, the cost is low, the stripping time is short, the yield of the stanene is high, and the mass production is easy to realize.

Description

technical field [0001] The invention belongs to the field of preparation of two-dimensional new materials, in particular to a preparation method of stannene powder. Background technique [0002] Two-dimensional nanomaterials such as graphene and transition metal sulfides have shown extraordinary application potential in many fields such as electronics, sensing and optoelectronic devices due to their excellent physical and structural properties. Among them, graphene has been widely studied as the most representative two-dimensional material. It has ultrahigh carrier mobility, but the lack of a band gap has severely hindered the application of graphene in logic semiconductor devices such as field-effect transistors. As a representative member of the transition metal sulfide semiconductor family, molybdenum disulfide has a significant band gap and exhibits excellent switching ratio characteristics in n-type transistors. However, the presence of structural defects in MoS2 may ...

Claims

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Application Information

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IPC IPC(8): B22F9/04B22F9/02B22F1/00B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00B22F9/02B22F9/04B22F2009/049B22F1/0551B22F1/054B22F1/07B22F1/068B22F1/10B22F1/14
Inventor 刘乐光
Owner XIAMEN HOLY ISLAND OF METAL TECH CO LTD
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