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 prec

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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