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Preparation methods of tin telluride nanorods and tin telluride based binary metal telluride nanorods

A binary metal, tin telluride-based technology, used in selenium/tellurium compounds, chemical instruments and methods, binary selenium/tellurium compounds, etc.

Inactive Publication Date: 2018-01-05
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Moreover, tin telluride nanorods with different aspect ratios can be adjusted by adjusting different injection temperatures (40-120°C). The overall synthesis is relatively simple, and products with different shapes and aspect ratios can be controlled, but the oil phase The environment and the use of trioctylamine and trioctylphosphine will also cause the same problems as the above method

Method used

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  • Preparation methods of tin telluride nanorods and tin telluride based binary metal telluride nanorods
  • Preparation methods of tin telluride nanorods and tin telluride based binary metal telluride nanorods
  • Preparation methods of tin telluride nanorods and tin telluride based binary metal telluride nanorods

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[0037] In the preparation method of the present invention, the target product is directly synthesized through a simple chemical conversion method in a system using ethylene glycol as a solvent.

[0038] The basic process of the method of the present invention is as follows: firstly, in a suitable environment system, add a tellurium source and a surfactant to form a first mixture, and heat the first mixture to react to prepare the first mixture containing uniform tellurium nanorods. Two mixtures. Then, adding the tin source as a precursor and an optional second metal source to the second mixture, and raising the reaction temperature above 170° C. to react for a period of time, the corresponding metal telluride nanorod structure can be obtained.

[0039] The overall reaction mechanism of the method of the present invention is: the tellurium source is reduced to elemental tellurium under the action of hydrazine hydrate, and at this time the synthesis of nanorod morphology is cont...

Embodiment 1

[0053] Take a 50mL three-neck flask, add 0.2216g (1mmol) sodium tellurite, 1g polyvinylpyrrolidone and 30mL ethylene glycol into it, pass through argon protection and heat to 120°C under magnetic stirring, then immediately add 2mL of 98% hydrated Hydrazine, reaction 2h. Then add 0.2257 g (1 mmol) of stannous chloride dihydrate pre-dissolved in a small amount of ethylene glycol, heat up to 180 ° C, react for 2 h, wash once with water and twice with ethanol after cooling, and dry in vacuum at 60 ° C for 12 h.

[0054] The scanning electron microscope image of this nanorod is shown in figure 1 , XRD data see Figure 4 . At this time, the length of the nanorod is about 280 to 300 nm, and the diameter is about 50 nm.

Embodiment 2

[0056] Take a 50mL three-neck flask, add 0.2216g (1mmol) sodium tellurite, 1g polyvinylpyrrolidone and 30mL ethylene glycol into it, pass through argon protection and heat to 140°C under magnetic stirring, then immediately add 2mL of 98% hydrated Hydrazine, reaction 2h. Then add 0.2257 g (1 mmol) of stannous chloride dihydrate pre-dissolved in a small amount of ethylene glycol, heat up to 180 ° C, react for 2 h, wash once with water and twice with ethanol after cooling, and dry in vacuum at 60 ° C for 12 h.

[0057] The scanning electron microscope image of this nanorod is shown in figure 2 , XRD data see Figure 4 . At this time, the length of the nanorod is about 360 to 420 nm, and the diameter is about 50 nm.

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Abstract

The invention provides a preparation method of tin telluride nanorods. The method comprises the following steps: a tellurium source and a surfactant are added into glycol in order to obtain a first mixture, wherein a tellurium source is sodium tellurite or telluric acid; the first mixture is heated to a first temperature which is higher than 110 DEG C, hydrazine hydrate is added, and after reaction, a second mixture containing the tellurium nanorods is obtained; a tin source is added into the second mixture, the second mixture is heated to a second temperature which is higher than 170 DEG C, and after reaction, the tin telluride nanorods are obtained, wherein the tin source is chloride or nitrate of tin. The invention also provides a method for preparing tin telluride based binary metal telluride nanorods, and a second metal source and the tin source are added at the same time in the method.

Description

technical field [0001] The invention relates to the technical field of nanomaterial preparation, in particular to a preparation method of tin telluride nanorods and tin telluride-based binary metal telluride nanorods. Background technique [0002] "Journal of Materials Chemistry" (Journal of Materials Chemistry. 2011, volume 21, page 12218) reported a method for obtaining tin telluride nanorods by continuous reaction in a continuous heat injection reactor. It is obtained by taking trioctylphosphine telluride as tellurium source, stannous chloride as tin source, and reacting in a system in which oleic acid and trioctylphosphine mixture are solvents. The diameter of the obtained nanorods is 20 ± 5nm, the length is 60 ± 10nm, the overall uniformity is very good, but the aspect ratio is low, the use of oil phase environment has a certain impact on the post-processing and trioctylphosphine is a toxic solvent , to be used with care. [0003] "Journal of the American Chemical Soc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B19/00C01B19/04B82Y30/00B82Y40/00
Inventor 俞书宏夏雨阳缘刘国强
Owner UNIV OF SCI & TECH OF CHINA
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