A kind of preparation method of nickel oxide-based composite semiconductor nanofiber

A composite semiconductor, nanofiber technology, applied in chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, chemical/physical processes, etc., can solve the problems of poor repeatability, limited application of nickel oxide materials, and harsh reaction conditions And other issues

Active Publication Date: 2021-05-18
DALIAN POLYTECHNIC UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, in the synthesis method of inorganic composite nanomaterials, the prior art is mainly the hydrothermal method, that is, in a sealed pressure vessel, water is used as a solvent, and the chemical reaction is carried out under high temperature and high pressure conditions. The disadvantages of this prior art Mainly: the reaction conditions are relatively harsh and need to be carried out in a reactor; the reaction needs to be carried out under high temperature and high pressure conditions, and the repeatability is poor; the choice of reactants is relatively single, which limits the application of nickel oxide materials

Method used

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  • A kind of preparation method of nickel oxide-based composite semiconductor nanofiber
  • A kind of preparation method of nickel oxide-based composite semiconductor nanofiber

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Experimental program
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Effect test

Embodiment 1

[0026]The method of preparing the nickel oxide-based composite semiconductor nanofibers of the present embodiment includes the following steps:

[0027]Step 1. Preparation of PAN nanofibers by electrospinning, this method is a conventional method;

[0028]Step 2, the PAN nanofibers obtained by the step were heat-treated to obtain carbon nanofibers, i.e. CNFS; the heat treatment method is: first access the air atmosphere into the atmosphere furnace, the furnace temperature rises from the room to 270 ° C, temperature rise rate It was 2 ° C / min, and the temperature was heated to 270 ° C. Then, the nitrogen atmosphere was introduced into the atmosphere furnace, and the furnace temperature rose from 270 ° C to 800 ° C, and the temperature of the temperature was 5 ° C / min, and the temperature was temperature to 800 ° C. Then cool to room temperature naturally;

[0029]Step three, soak the carbon nanofibers obtained in step two in Niso at 90 ml concentration of 0.225 mol / L4Aqueous solution, t...

Embodiment 2

[0039]The method of preparing the nickel oxide-based composite semiconductor nanofibers of the present embodiment includes the following steps:

[0040]Step 1. Preparation of PAN nanofibers by electrospinning, this method is a conventional method;

[0041]Step 2, the PAN nanofibers obtained by the step were heat-treated to obtain carbon nanofibers, i.e. CNFS; the heat treatment method is: first access the air atmosphere into the atmosphere furnace, the furnace temperature rises from the room to 270 ° C, temperature rise rate It was 2 ° C / min, and the temperature was heated to 270 ° C. Then, the nitrogen atmosphere was introduced into the atmosphere furnace, and the furnace temperature rose from 270 ° C to 800 ° C, and the temperature of the temperature was 5 ° C / min, and the temperature was temperature to 800 ° C. Then cool to room temperature naturally;

[0042]Step three, soak the carbon nanofibers obtained by step two in Niso at 90 ml concentration of 0.63 mol / L4Aqueous solution, to...

Embodiment 3

[0048]The method of preparing the nickel oxide-based composite semiconductor nanofibers of the present embodiment includes the following steps:

[0049]Step 1. Preparation of PAN nanofibers by electrospinning, this method is a conventional method;

[0050]Step 2, the PAN nanofibers obtained by the step were heat-treated to obtain carbon nanofibers, i.e. CNFS; the heat treatment method is: first access the air atmosphere into the atmosphere furnace, the furnace temperature rises from the room to 270 ° C, temperature rise rate It was 2 ° C / min, and the temperature was heated to 270 ° C. Then, the nitrogen atmosphere was introduced into the atmosphere furnace, and the furnace temperature rose from 270 ° C to 800 ° C, and the temperature of the temperature was 5 ° C / min, and the temperature was temperature to 800 ° C. Then cool to room temperature naturally;

[0051]Step three, soak the carbon nanofibers obtained in step two in Niso at 90 ml concentration of 0.225 mol / L4Aqueous solution, t...

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Abstract

The invention provides a method for preparing nickel oxide-based composite semiconductor nanofibers. The method is as follows: PAN nanofibers are prepared by electrospinning, carbon nanofibers are obtained after heat treatment, and soaked in NiSO 4 Aqueous ammonia solution is added dropwise into the aqueous solution, rinsed with distilled water, left to air, soaked in the aqueous solution of metal salt ions, rinsed with distilled water, left to air and calcined to obtain nickel oxide-based composite semiconductor nanofibers. The invention is simple to operate, and the carbon nanofiber acts as a template, which can make Ni(OH) 2 Nanosheets grow orderly on the surface of carbon nanofibers, so that the nanosheets form an ordered one-dimensional structure and avoid agglomeration; high-temperature calcination converts hydroxides into oxides, and at the same time, high-temperature conditions decompose carbon nanofibers to obtain nanosheets Assembled nickel oxide-based composite semiconductor nanofibers with a hollow nanofiber structure, the nanofibers are randomly distributed to form a three-dimensional network porous structure, which is conducive to the activity of the composite semiconductor nanofibers.

Description

Technical field[0001]The present invention belongs to the semiconductor nanofiber technology, and more particularly to the preparation method of nickel oxide-based composite semiconductor nanofibers.Background technique[0002]Nickel oxide is a typical P-type semiconductor material having high catalytic activity, good chemical stability, and has a small amount of humidity, which is important in catalysis, gas sensitive, energy storage, electrochemical. The use of other metal oxide compounds or the preparation of nickel oxide materials can be used to improve the use of nickel oxide materials in practical applications. At present, in the synthesis method of inorganic composite nanomaterials, prior art is mainly a hydrothermal method, that is, in a sealed pressure vessel, a chemical reaction carried out under high temperature and high pressure in a sealed pressure vessel. It is mainly: the reaction conditions are relatively harsh, and it is necessary to carry out in the reactive kettle; ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/755B01J23/825B01J23/835B01J35/06
CPCB01J23/755B01J23/825B01J23/835B01J35/004B01J35/06
Inventor 闫爽刘海瑞董姝文张萌王静如
Owner DALIAN POLYTECHNIC UNIVERSITY
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