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Preparation method of NiO nanowire and magnetic field thermal treatment device

A heat treatment device and nanowire technology, which is applied in the field of heat treatment devices and magnetic field heat treatment devices, can solve the problems of complex process, high cost, environmental pollution, etc., and achieve the effect of simple process, low cost and strong operability

Active Publication Date: 2014-08-06
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the first aspect of the present invention is to propose a method for preparing NiO nanowires, so as to solve the technical problems of the existing NiO nanowire preparation methods, which are complex in process, high in cost, unable to quantify production, and serious environmental pollution

Method used

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  • Preparation method of NiO nanowire and magnetic field thermal treatment device
  • Preparation method of NiO nanowire and magnetic field thermal treatment device
  • Preparation method of NiO nanowire and magnetic field thermal treatment device

Examples

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preparation example Construction

[0050] A method for preparing NiO nanowires, comprising the steps of:

[0051] a) Ni nanowires are placed in the magnetic field heat treatment device as described in this specific embodiment, specifically placed in the material table 8;

[0052] b) The temperature is raised in a magnetic field environment with a magnetic field strength of 0.05T-0.52T, and the temperature rise rate is 0.5°C / min-50°C / min, and the temperature rise is to raise the temperature of the material to 400°C-1500°C;

[0053] c) heat preservation under a magnetic field environment with a magnetic field strength of 0.05T-0.52T, heat preservation is to keep the temperature of the material at the temperature of the material after heating up in step b), and the heat preservation time of heat preservation is 1.5h-15h;

[0054] d) Naturally cooling in a magnetic field environment with a magnetic field strength of 0.05T-0.52T until room temperature to obtain NiO nanowires.

[0055] The magnetic field strengths i...

Embodiment 1

[0060] Place the Ni nanowires in the magnetic field heat treatment device as described in this specific embodiment, set the magnetic field strength to 0.3T, and raise the temperature to 800°C at a rate of 10°C / min; then set the magnetic field strength to 0.4T, 800°C Keep warm for 8 hours; finally set the magnetic field strength to 0.3T, and let it cool down to room temperature naturally.

[0061] The SEM pictures of the prepared NiO nanowires are as follows: figure 2 , XRD test results such as image 3 .

Embodiment 2

[0063] Place the Ni nanowires in the magnetic field heat treatment device as described in this specific embodiment, set the magnetic field strength to 0.52T, and raise the temperature to 400°C at a rate of 0.5°C / min; then set the magnetic field strength to 0.52T, 400°C Keep warm for 15 hours; finally set the magnetic field strength to 0.52T, and let it cool down to room temperature naturally.

[0064] The SEM pictures of the prepared NiO nanowires are as follows: Figure 4 , XRD test results such as Figure 5 .

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Abstract

The invention relates to a preparation method of a NiO nanowire. The invention further relates to a thermal treatment device, in particular to a magnetic field thermal treatment device, more particularly to a thermal treatment device for the preparation method of the NiO nanowire. According to the preparation method of the NiO nanowire, the Ni nanowire is placed into a magnetic field environment for annealing. The magnetic field thermal treatment device comprises magnetic field generating equipment and constant temperature controlling equipment. According to the method and the device, the technical problems of complex process, high cost, unavailable batch production and severe environmental pollution existing in the conventional NiO nanowire preparation method are solved.

Description

technical field [0001] The invention relates to a preparation method of NiO nanowires. The present invention also relates to a heat treatment device, in particular to a magnetic field heat treatment device, in particular to a heat treatment device used in the preparation method of the NiO nanowire. Background technique [0002] Nickel oxide (NiO) nanomaterial is a P-type semiconductor functional material with a large band gap. It has excellent catalytic activity, superparamagnetism, thermal sensitivity and electrical properties. It is used in catalysts, battery electrodes, electrochemical capacitors, Electronic components, photoelectric conversion materials, magnetic materials, functional ceramics, thermal components and gas sensors have very broad application prospects. In recent years, various shapes of NiO nanocrystals have been synthesized, such as: NiO nanoparticles, NiO flower structures, NiO nanochains, NiO nanorods, NiO nanofibers, NiO nanowires, and NiO nanofilms. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G53/04B82Y40/00
Inventor 张亚非王剑魏浩
Owner SHANGHAI JIAOTONG UNIV