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Tin diselenide with nano flower structure and preparation method thereof

A technology of tin diselenide and nanoflowers, which is applied in the direction of binary selenium/tellurium compounds, nanotechnology, nanotechnology, etc., can solve the problem of small specific surface area of ​​tin diselenide, achieve uniform size, small size, prevent The effect of reunion

Active Publication Date: 2019-09-17
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The tin diselenide prepared by the above method is usually tin diselenide with flake or needle-like structure, and the specific surface area of ​​tin diselenide with flake or needle-like structure is small, which limits the practical application process in the fields of sensors and catalysts. played its role

Method used

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  • Tin diselenide with nano flower structure and preparation method thereof
  • Tin diselenide with nano flower structure and preparation method thereof
  • Tin diselenide with nano flower structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052]Heat 68mL oleylamine to 70°C in a heat-collecting magnetic stirrer, add 2.4mmol selenium dioxide and stir until a clear solution, add 2.4mmol stannous chloride, add 2.5mL n-dodecanethiol, stir until completely dissolved , immediately put the mixture into a stainless steel autoclave lined with 100mL polytetrafluoroethylene, seal it and put it in a constant temperature oven, heat it to 180°C, and keep it warm for 36h. After the reaction, take out the autoclave and let it cool down to room temperature naturally. The precipitate was collected by centrifugation, and was repeatedly centrifuged and washed 4 times with a toluene / ethanol mixture, and the precipitate obtained after centrifugation was dried in a vacuum oven at 60° C. for 6 hours to obtain a tin diselenide nanoflower material.

[0053] Carry out XRD, SEM, TEM analysis to embodiment 1 gained process tin diselenide, and final product tin diselenide nano flower material, the result is as follows Figure 2-Figure 10 sho...

Embodiment 2

[0063] Heat 68mL oleylamine to 70°C in a heat-collecting magnetic stirrer, add 0.8mmol selenium dioxide and stir until a clear solution, add 0.8mmol stannous chloride, add 0.8mL n-dodecanethiol, stir until completely dissolved , immediately put the mixture into a stainless steel autoclave lined with 100mL polytetrafluoroethylene, seal it and put it in a constant temperature oven, heat it to 180°C, and keep it warm for 24 hours. After the reaction, take out the autoclave and let it cool down to room temperature naturally. The precipitate was collected by centrifugation, and was repeatedly centrifuged and washed 4 times with a toluene / ethanol mixture, and the precipitate obtained after centrifugation was dried in a vacuum oven at 60° C. for 6 hours to obtain a tin diselenide nanoflower material.

Embodiment 3

[0065] Heat 68mL of oleylamine to 70°C in a heat-collecting magnetic stirrer, add 1.6mmol of selenium dioxide and stir to a clear solution, add 1.6mmol of stannous chloride, add 1.6mL of n-dodecanethiol, and stir until completely dissolved , immediately put the mixture into a stainless steel autoclave lined with 100mL polytetrafluoroethylene, seal it and put it in a constant temperature oven, heat it to 180°C, and keep it warm for 48h. After the reaction, take out the autoclave and let it cool down to room temperature naturally. The precipitate was collected by centrifugation, and was repeatedly centrifuged and washed 4 times with a toluene / ethanol mixture, and the precipitate obtained after centrifugation was dried in a vacuum oven at 60° C. for 6 hours to obtain a tin diselenide nanoflower material.

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Abstract

The invention discloses tin diselenide with a nano flower structure and a preparation method thereof. The tin diselenide is a flower-like structure with stacked slices. As can be seen from the microscopic diagram of the flower-like structure, tiny other slices are generated on each slice, so that the specific surface area of the formed flower-like structure is larger. The preparation method of the tin diselenide with the nano flower structure has simple process, and used raw materials and solvents have no pollution; through the selection of the raw materials and solvents, the prepared flower-shaped tin diselenide has high purity, uniform size and consistent shape.

Description

[0001] 【Technical field】 [0002] The invention belongs to the field of inorganic compound semiconductor nanomaterials, and in particular relates to tin diselenide with a nanoflower structure and a preparation method thereof. [0003] 【Background technique】 [0004] In recent years, the unique layered structure of tin diselenide has attracted extensive attention. Its layered structure leads to strong phonon scattering between layers, so it has low lattice thermal conductivity and anisotropic electronic and photoelectric properties, and has broad applications in the fields of thermoelectric materials, photoelectric sensing, and energy storage materials. Foreground, it can be applied to solid-phase media of holograms, thermoelectric refrigeration materials, infrared photoelectric instruments, thin film electrodes and memory switches, etc. So far, the synthesis of tin diselenide nanomaterials mainly adopts high temperature and high pressure methods, and the synthesis process is c...

Claims

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Application Information

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IPC IPC(8): C01B19/04B82Y30/00B82Y40/00
CPCB82Y30/00B82Y40/00C01B19/007C01P2004/30C01P2004/50C01P2004/61C01P2004/64
Inventor 马飞孙军刘帅
Owner XI AN JIAOTONG UNIV
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