Preparation method of zinc selenide nanowire with controllable composition

A zinc selenide and nanowire technology, applied in chemical instruments and methods, selenium/tellurium compounds, sustainable manufacturing/processing, etc., can solve problems such as zinc selenide nanowire process routes that need to be developed urgently, and achieve product phase composition. control, uniform size distribution, and low raw material cost

Pending Publication Date: 2022-05-27
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, the zinc selenide nanowires synthesized by the solution-solid-solid growth method mostly have a cubic phase-based structure, and there are still many deficiencies in realizing the precise control of the phase composition and size of the zinc selenide nanowires, so the controllable preparation The process route of zinc selenide nanowires needs to be developed urgently

Method used

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  • Preparation method of zinc selenide nanowire with controllable composition
  • Preparation method of zinc selenide nanowire with controllable composition
  • Preparation method of zinc selenide nanowire with controllable composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] The preparation operation steps of a composition-controllable zinc selenide nanowire are as follows:

[0031] (1) Dissolve 0.02 mol of selenium powder in 20 mL of tri-n-octylphosphine, and dissolve 0.04 mol of silver nitrate in 30 mL of N,N-dimethylformamide;

[0032] In a flask with a vacuum stopper, add 500 mL of oleylamine, 20 mL of tri-n-octylphosphine with 0.02 mol of selenium powder, 30 mL of N,N-dimethylformamide with 0.04 mol of silver nitrate and purge with argon After stirring for 30 min, the flask was heated to 120 °C for 20 min, and then the flask was reacted at 200 °C for 15 min. Finally, centrifuge and wash with methanol and ethanol for several times to collect the final precipitated product; the precipitate is dispersed in a mixed solution of 500 mL of cyclohexane and 50 mL of oleylamine to obtain solution A.

[0033] The solution A is a nanoparticle catalyst, and the main component is silver selenide;

[0034] (2) 1 mL of solution A, 0.4 mmol of seleni...

Embodiment 2

[0038] The preparation operation steps of a composition-controllable zinc selenide nanowire are as follows:

[0039] (1) Dissolve 0.02 mol of selenium powder in 20 mL of tri-n-octylphosphine, and dissolve 0.04 mol of silver nitrate in 30 mL of N,N-dimethylformamide;

[0040] In a flask with a vacuum stopper, add 500 mL of oleylamine, 20 mL of tri-n-octylphosphine with 0.02 mol of selenium powder, 30 mL of N,N-dimethylformamide with 0.04 mol of silver nitrate and purge with argon After stirring for 30 min, the flask was heated to 120 °C for 40 min, and then the flask was reacted at 200 °C for 15 min. Finally, centrifugation and washing with methanol and ethanol were repeated several times, and the precipitate was dispersed in a mixed solution of cyclohexane and oleylamine to obtain solution A.

[0041] The solution A is a nanoparticle catalyst, and the main component is silver selenide.

[0042] (2) Add 1 mL of solution A, 0.4 mmol of selenium powder, 0.4 mmol of zinc oleate,...

Embodiment 3

[0045] The preparation operation steps of a composition-controllable zinc selenide nanowire are as follows:

[0046] (1) Dissolve 0.02 mol of selenium powder in 20 mL of tri-n-octylphosphine, and dissolve 0.04 mol of silver nitrate in 30 mL of N,N-dimethylformamide;

[0047] In a flask with a vacuum stopper, add 500 mL of oleylamine, 20 mL of tri-n-octylphosphine with 0.02 mol of selenium powder, 30 mL of N,N-dimethylformamide with 0.04 mol of silver nitrate and purge with argon Stir for 30 min; then the flask was heated to 120 °C for 20 min, and then the flask was reacted at 200 °C for 15 min. Finally, centrifuge and wash with methanol and ethanol for several times, and disperse the precipitate in a mixed solution of 500 mL of cyclohexane and 50 mL of oleylamine to obtain solution A.

[0048] Solution A is a nanoparticle catalyst, and the main component is silver selenide.

[0049] (2) 1 mL of solution A, 0.5 mmol of zinc oleate, 30 mL of octadecene and 10 mL of oleylamine ...

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Abstract

The invention relates to a preparation method of a zinc selenide nanowire with controllable composition, and belongs to the technical field of nano material preparation. The zinc selenide nanowire is yellow green powder, and the powder particle morphology is in a cotton swab rod shape; the cotton swab head is made of silver selenide nanoparticles, and the rod is made of zinc selenide. The preparation method comprises the following steps: (1) uniformly stirring oleylamine, tri-n-octylphosphine containing selenium powder and an N, N-dimethylformamide solution containing silver nitrate under the protection of inert gas, preserving heat, heating, cooling, washing and dispersing to obtain dispersion liquid of the silver selenide catalyst; (2) uniformly mixing and stirring the dispersion liquid, selenium powder and zinc oleate in octadecene and oleylamine under the protection of inert gas, heating, preserving heat, and washing to obtain zinc selenide nanowires mainly comprising sphalerite; and (3) mixing the dispersion liquid and zinc oleate, carrying out high-temperature short-time pretreatment, uniformly stirring and mixing with an oleylamine solution of selenium powder under the protection of inert gas, heating, carrying out heat preservation, and washing to obtain the wurtzite-based zinc selenide nanowire.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, in particular to a preparation method of novel zinc selenide nanowires with controllable composition and size. Background technique [0002] In the field of nanomaterials, wide-bandgap II-VI semiconductor one-dimensional nanomaterials have special physicochemical properties and have great application potential in the field of optoelectronics in the future. As a typical representative of II-VI semiconductors and the main raw material of third-generation semiconductors, zinc selenide has shown a wide range of fields such as light-emitting diodes, nonlinear optical devices, lasers, photocatalysis, and solar cells due to its rich structure and novel properties. application prospects. In recent years, a series of research results have been achieved based on the research of one-dimensional zinc selenide nanomaterials. Various one-dimensional nanostructures of zinc selenide have been s...

Claims

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Application Information

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IPC IPC(8): C01B19/00
CPCC01B19/007C01P2002/72C01P2004/04C01P2002/84C01P2004/16Y02P70/50
Inventor 张永亮齐康常城蔡婧汪嘉恒鲍智勇
Owner HEFEI UNIV OF TECH
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