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Co3O4/In2O3 heterostructure nanotube and preparation method and application thereof

A heterostructure and nanotube technology, which is applied in chemical instruments and methods, hollow filament manufacturing, filament/wire forming, etc., can solve the problems of complex and tedious processes, and the wall thickness of nanotube-like structures is not easy to control, and achieves cost-effective Inexpensive, good visible light catalytic activity, easy-to-form effect

Inactive Publication Date: 2014-03-19
QILU UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing electrospinning technology can often only produce solid nanofibers rather than nanotubular materials, such as CN101905974, CN102251305
[0004] In addition, CN103334179 also reported a method for preparing hollow structure indium oxide nanofibers. The method first uses polyvinylidene fluoride nanofibers as the main body, then wraps the indium oxide precursor, and finally sinters to form hollow structure indium oxide nanofibers. The disadvantage of this method is that the process is complex and cumbersome, and it is not easy to control the wall thickness of the nanotube structure.
[0005] At present, electrospinning technology is used to directly prepare Co 3 o 4 / In 2 o 3 Heterostructure nanotubes, no related reports

Method used

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  • Co3O4/In2O3 heterostructure nanotube and preparation method and application thereof
  • Co3O4/In2O3 heterostructure nanotube and preparation method and application thereof
  • Co3O4/In2O3 heterostructure nanotube and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of Co 3 o 4 / In 2 o 3 The preparation method of heterostructure nanotubes, the steps are as follows:

[0041] (1) 1.45g Co(NO 3 ) 2 ·6H 2 O (5mmol) and 0.95g In(NO 3 ) 3 4.5H 2 O (2.5mmol) was dissolved in a mixed solution of 16ml deionized water and 16ml absolute ethanol, and stirred until completely dissolved; 2.0g of polyvinylpyrrolidone (PVP) was added and stirred evenly to obtain a spinnability with a viscosity of 0.5Pa·S Sol;

[0042] (2) inject the spinnable sol prepared in step (1) into an electrospinning device, and perform electrospinning to obtain a precursor fiber;

[0043] Electrospinning conditions: spray the spinnable sol into the receiving plate with a plastic syringe with a stainless steel needle, the distance between the needle of the syringe and the receiving plate is 20cm, and the spray rate of the spinnable sol is 1.5mL / h , the voltage is 20kV, and the electrospinning temperature is controlled at 25°C;

[0044] (3) Dry the precurs...

Embodiment 2

[0053] A kind of Co 3 o 4 / In 2 o 3 The preparation method of heterostructure nanotubes, the steps are as follows:

[0054] (1) 1.45g Co(NO 3 ) 2 ·6H 2 O (5mmol) and 1.91g In(NO 3 ) 3 4.5H 2 O (5mmol) was dissolved in a mixed solution of 8ml deionized water and 8ml absolute ethanol, and stirred until completely dissolved; 1.0g polyvinylpyrrolidone was added, and stirred evenly to obtain a spinnable sol with a viscosity of 0.5Pa·S;

[0055] (2) inject the spinnable sol prepared in step (1) into an electrospinning device, and perform electrospinning to obtain a precursor fiber;

[0056] Electrospinning conditions: spray the spinnable sol into the receiving plate with a plastic syringe with a stainless steel needle, the distance between the needle of the syringe and the receiving plate is 25cm, and the spray rate of the spinnable sol is 1.5mL / h , the voltage is 20kV, and the electrospinning temperature is controlled at 25°C;

[0057] (3) Dry the precursor fibers prepar...

Embodiment 3

[0060] A kind of Co 3 o 4 / In 2 o 3 The preparation method of heterostructure nanotubes, the steps are as follows:

[0061] (1) 0.73g Co(NO 3 ) 2 ·6H 2 O (2.5mmol) and 0.95g In(NO 3 ) 3 4.5H 2 O (2.5mmol) was dissolved in a mixed solution of 11ml of deionized water and 5ml of absolute ethanol, and stirred until completely dissolved; 1.0g of polyvinylpyrrolidone was added, and stirred evenly to obtain a spinnable sol with a viscosity of 0.31Pa·S;

[0062] (2) inject the spinnable sol prepared in step (1) into an electrospinning device, and perform electrospinning to obtain a precursor fiber;

[0063] Electrospinning conditions: spray the spinnable sol into the receiving plate with a plastic syringe with a stainless steel needle, the distance between the needle of the syringe and the receiving plate is 25cm, and the spray rate of the spinnable sol is 1.5mL / h , the voltage is 20kV, and the electrospinning temperature is controlled at 25°C;

[0064](3) Dry the precursor...

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Abstract

The invention relates to a Co3O4 / In2O3 heterostructure nanotube and a preparation method and application thereof. The nanotube is prepared from Co3O4 nanoparticles and In2O3 nanoparticles, wherein the particle size of the Co3O4 nanoparticles and the In2O3 nanoparticles is 10-20nm; the diameter of the nanotube is 100-200nm, and the wall thickness of the nanotube is 10-50nm. The Co3O4 / In2O3 heterostructure nanotube disclosed by the invention is of a hollow tubular structure and has good visible-light catalysis activity; under the irradiation of visible light, the Co3O4 / In2O3 heterostructure nanotube is used for photocatalytic oxidation degradation of methyl orange, and the degradation ratio within 3 hours can reach 95%; the preparation method is simple in step and low in cost, and the tube wall thickness of the nanotube is easy to control.

Description

technical field [0001] The invention relates to the preparation of oxide nanotubes, in particular to a Co 3 o 4 / In 2 o 3 The invention relates to a heterostructure nanotube, a preparation method and application thereof, and belongs to the field of inorganic materials. Background technique [0002] Compared with corresponding bulk materials, one-dimensional nanomaterials have attracted extensive attention due to their excellent physical and chemical properties. It has broad application prospects in many fields. In 2 o 3 It is a kind of n-type semiconductor, Co 3 o 4 is a p-type semiconductor, In 2 o 3 and Co 3 o 4 The composite formation of p-n heterostructure can facilitate the separation of carriers and improve its photocatalytic activity. At present, the methods for preparing nanotubes mainly include hydrothermal method, such as CN100425538 and the like. [0003] In recent years, electrospinning technology has been widely used in the preparation of one-dimen...

Claims

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Application Information

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IPC IPC(8): D01F9/08D01F1/08D01D5/00B01J23/825B01J35/06
Inventor 卢启芳
Owner QILU UNIV OF TECH
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