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Preparation method of carbon-coated core-shell structure bismuth telluride nanorod, prepared carbon-coated core-shell structure bismuth telluride nanorod and application

A core-shell structure, bismuth telluride technology, applied in the field of nanometer bismuth telluride, can solve the problem of less carbon-encapsulated telluride, and achieve the effects of low production cost, simple post-processing, and good uniformity.

Active Publication Date: 2018-02-16
HEFEI NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, there are few studies on carbon-encapsulated tellurides. Cho, J.S. et al. used the spray pyrolysis method to generate C-MoTe2 microspheres through the tellurization process of the precursor compound C-MoOx, and finally obtained C-MoTe2 two-dimensional structure microspheres at high temperature. , an anode material for sodium-ion batteries [Nanoscale, 2017, 9, 1942-1950]
There is no report on carbon-wrapped core-shell bismuth telluride

Method used

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  • Preparation method of carbon-coated core-shell structure bismuth telluride nanorod, prepared carbon-coated core-shell structure bismuth telluride nanorod and application
  • Preparation method of carbon-coated core-shell structure bismuth telluride nanorod, prepared carbon-coated core-shell structure bismuth telluride nanorod and application
  • Preparation method of carbon-coated core-shell structure bismuth telluride nanorod, prepared carbon-coated core-shell structure bismuth telluride nanorod and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A method for preparing bismuth telluride nanorods with a carbon-wrapped core-shell structure, the steps of the method include:

[0028] S1. Add 48.5 mg of bismuth nitrate pentahydrate into 15 ml of deionized water and dissolve to obtain a bismuth ion solution;

[0029] S2. Add 22 mg of sodium tellurite into the bismuth ion solution, and stir magnetically for 40 minutes to obtain a turbid solution;

[0030] S3. Add 0.1 g of ascorbic acid into the turbid solution, and magnetically stir for 40 minutes to obtain a mixed solution a;

[0031] S4. Add 0.3 g of polyvinylpyrrolidone to the mixed solution a, and magnetically stir for 40 minutes to obtain the mixed solution b;

[0032] S5. Add dropwise 5ml of ethylene glycol solution to the mixed solution b, and magnetically stir to obtain the mixed solution c;

[0033] S6. Transfer the mixed solution c to a reactor for hydrothermal reaction to obtain bismuth telluride nanorods with a carbon-wrapped core-shell structure; specifi...

Embodiment 2

[0039] A method for preparing bismuth telluride nanorods with a carbon-wrapped core-shell structure, the steps of the method include:

[0040] S1, 97mg of bismuth nitrate pentahydrate was added into 15ml of deionized water and dissolved to obtain a bismuth ion solution;

[0041] S2. Add 22 mg of sodium tellurite into the bismuth ion solution, and stir magnetically for 40 minutes to obtain a turbid solution;

[0042] S3. Add 0.1 g of ascorbic acid into the turbid solution, and magnetically stir for 40 minutes to obtain a mixed solution a;

[0043] S4. Add 0.3 g of polyvinylpyrrolidone to the mixed solution a, and magnetically stir for 40 minutes to obtain the mixed solution b;

[0044] S5. Add dropwise 5ml of ethylene glycol solution to the mixed solution b, and magnetically stir for 2 minutes to obtain the mixed solution c;

[0045] S6. Transfer the mixed solution c to a reactor for hydrothermal reaction to obtain bismuth telluride nanorods with a carbon-wrapped core-shell s...

Embodiment 3

[0050] A method for preparing bismuth telluride nanorods with a carbon-wrapped core-shell structure, the steps of the method include:

[0051] S1, adding 31.5 mg of bismuth chloride into 15 ml of deionized water and dissolving it to obtain a bismuth ion solution;

[0052]S2. Add 44 mg of sodium tellurite into the bismuth ion solution, and stir magnetically for 40 minutes to obtain a turbid solution;

[0053] S3. Add 0.1 g of ascorbic acid into the turbid solution, and magnetically stir for 40 minutes to obtain a mixed solution a;

[0054] S4. Add 0.2 g of polyvinylpyrrolidone to the mixed solution a, and magnetically stir for 40 minutes to obtain the mixed solution b;

[0055] S5. Add dropwise 5ml of ethylene glycol solution to the mixed solution b, and magnetically stir for 2 minutes to obtain the mixed solution c;

[0056] S6. Transfer the mixed solution c to a reactor for hydrothermal reaction to obtain bismuth telluride nanorods with a carbon-wrapped core-shell structure...

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Abstract

The invention discloses a preparation method of a carbon-coated core-shell structure bismuth telluride nanorod, a prepared carbon-coated core-shell structure bismuth telluride nanorod and application.The method includes the steps of: S1. adding a bismuth salt into deionized water for dissolving to obtain a bismuth ion solution; S2. adding sodium tellurite into the bismuth ion solution, and performing stirring to obtain a turbid solution; S3. adding ascorbic acid into the turbid solution, and conducting stirring to obtain a mixed solution a; S4. adding polyvinylpyrrolidone into the mixed solution a, and performing stirring to obtain a mixed solution b; S5. adding an ethylene glycol solution dropwise into the mixed solution b, and performing stirring to obtain a mixed solution c; and S6. transferring the mixed solution c into a reaction kettle and carrying out hydrothermal reaction so as to obtain the carbon-coated core-shell structure bismuth telluride nanorod. The method provided by the invention has the advantages of easy preparation control, simple process and low cost, and is suitable for industrial batch production. Moreover, the carbon-coated core-shell structure bismuth telluride nanorod obtained by the method provided by the invention has the characteristics of regular morphology, good uniformity and the like.

Description

technical field [0001] The invention relates to a method for preparing bismuth telluride nanorods with a carbon-wrapped core-shell structure and the prepared bismuth telluride nanorods with a carbon-wrapped core-shell structure and applications, belonging to the technical field of nano-bismuth telluride. Background technique [0002] At present, chalcogenides have various compositions and unique properties of light, electricity and magnetism, and have broad application prospects in solar cells, micro-nano optoelectronic devices, energy converters and other fields. Carbon is often used as an auxiliary material to improve the surface stability of the material and increase the properties that many materials do not have. It can even endow the performance of the carbon layer on the wrapped nanomaterial to obtain a new carbon-containing nanocomposite structure material. , so that it has broad application prospects in electronics, magnetic recording, radio wave shielding / absorption...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B19/04B82Y40/00B82Y30/00C01B32/05
CPCB82Y30/00C01B19/007C01P2002/72C01P2004/03C01P2004/04C01P2004/16C01P2004/62C01P2004/64C01P2004/80
Inventor 万丽娟汪海波钟读贤
Owner HEFEI NORMAL UNIV
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