Method for preparing metallic nickel nano-wire

A technology of metal nickel and nanowires, which is applied in the field of preparation of metal nickel, can solve the problems of low yield and high production cost, and achieve the effects of high yield, low cost and good crystal form

Inactive Publication Date: 2009-07-22
JIANGSU UNIV OF SCI & TECH
View PDF1 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the shortcomings of high production cost and low yield in the prior art, the present invention proposes a method for preparing metallic nickel nanowires, which has the advantages of simple process and low raw material cost

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for preparing metallic nickel nano-wire
  • Method for preparing metallic nickel nano-wire
  • Method for preparing metallic nickel nano-wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] First 0.27g NiCl 2 ·6H 2 O and 1g of polyvinylpyrrolidone PVP (molecular weight MW30,000) were dissolved in 75ml of ethylene glycol (EG), and then molar ratio of hydrazine hydrate: NiCl 2 ·6H 2 The ratio of O=0.3:1, add 50% Vol.A.R. of hydrazine hydrate and 5ml ethanol to the above solution, then heat to boiling point and reflux for 4 hours, the solution turns from initial blue to yellow-green and finally black matter produced. The precipitate was washed 6 times with absolute ethanol and then dried at 80°C to obtain loose black powdery metal nickel nanowires, metal nickel nanowires, such as figure 1 , 2 As shown, the diameter is about 80nm, and the average length is 10-100 microns. Such as image 3 As shown, it has magnetic anisotropy as well as high squareness ratio and coercive force.

Embodiment 2

[0017] First 0.27g NiCl 2 ·6H 2 O and 1g of PVP (MW40,000) were dissolved in 75ml of ethylene glycol (EG) under vigorous stirring, then molar ratio of hydrazine hydrate:NiCl 2 ·6H 2 O=1.9:1 ratio, add 50% Vol.A.R. hydrazine hydrate and 5ml ethanol to the above solution, then heat to boiling point and reflux for 48 hours, a large number of black nano-nickel wires are produced at the bottom of the bottle.

Embodiment 3

[0019] First, dissolve 0.5g of nickel sulfate and 2g of polyvinylpyrrolidone PVP (molecular weight MW30,000) in 75ml of ethylene glycol (EG) at a mass ratio of 1:4, and then use a molar ratio of hydrazine hydrate: nickel sulfate = 0.8:1 In the above solution, add 50% Vol.A.R. of hydrazine hydrate and 15ml of ethanol, then control the temperature at 180°C, react for 6 hours, the solution turns from the initial blue to yellow-green and finally black nanowires are produced . The precipitate was washed 6 times with absolute ethanol and then dried at 80°C to obtain loose black metallic nickel nanowires.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
radiusaaaaaaaaaa
lengthaaaaaaaaaa
diameteraaaaaaaaaa
Login to view more

Abstract

The invention discloses a method for preparing metal nickel nano wires, which comprises the following steps: firstly, dissolving a metal nickel salt and polyvinylpyrrolidone into ethylene glycol according to the mass ratio of 1:0.5-1:20; secondly, adding hydrazine hydrate and 5-15 ml ethanol according to the fact that the mol ratio of the hydrazine hydrate to the metal nickel salt is 0.3-1.9:1; and thirdly, performing heating reaction for 3 to 48 hours until black deposit is generated in a solution, washing and drying the black deposit, and obtaining the black powder metal nickel nano wires, wherein the metal nickel salt is any one of nickel acetate, nickel sulfate, nickel chlorite and nickel nitrate, and the molar concentration of the metal nickel salt in the ethylene glycol is between 0.001 and 0.1 mol/L. The prepared metal nickel nano wires are continuous and compact and have good crystal formation and higher slenderness ratio.

Description

technical field [0001] The invention relates to a method for producing metallic nickel, in particular to a method for preparing nanoscale metallic nickel that can be widely used in the fields of preparing batteries, sensors, catalysts and the like. Background technique [0002] With the development of the information age, people have higher and higher requirements for information recording density. As a potential ultra-high-density recording material, the use of magnetic nanowire arrays as a medium can achieve a recording density of up to 400Gb / in2, which is much higher than the traditional magnetic recording mode. Compared with bulk materials, magnetic nanowires have higher coercive force and larger magnetic anisotropy, which are beneficial to their applications in magnetic storage. At the same time, for basic research, the magnetic nanowire array is also the simplest ideal system to study the magnetic interaction and magnetization process. In recent years, the study of m...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24
Inventor 曹霞
Owner JIANGSU UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap