Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method for multi-layer core-shell structural carbon@nickel cobaltate@ferroferric oxide composite material

A technology of multi-layer core-shell structure and composite material is applied in the field of preparation of multi-layer core-shell structure carbon@nickel cobaltate@iron tetroxide composite material, achieving the effects of wide source, excellent performance and easy availability of raw materials

Inactive Publication Date: 2017-08-18
QINGDAO UNIV
View PDF2 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these carbon-based materials have made great contributions in the field of microwave absorption, innovations in structure and composition are still needed to better meet practical applications.

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
  • Preparation method for multi-layer core-shell structural carbon@nickel cobaltate@ferroferric oxide composite material
  • Preparation method for multi-layer core-shell structural carbon@nickel cobaltate@ferroferric oxide composite material
  • Preparation method for multi-layer core-shell structural carbon@nickel cobaltate@ferroferric oxide composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] In this embodiment, nickel cobaltate, ferric oxide and carbon spheres are combined, and the specific preparation process is as follows:

[0023] (1) First weigh 0.0100g of glucose, 0.1164g of nickel nitrate, 0.2320g of cobalt nitrate and 0.2882g of urea with an electronic balance, then measure 50ml of deionized water with a graduated cylinder, put it in a 100ml beaker and mix , stirred magnetically at room temperature for 30 minutes to obtain a mixed solution, then transferred the mixed solution to a 100ml reactor, and reacted for 4.5 hours at 180°C. After the reaction, the obtained lavender product was slowly cooled to room temperature, and then the lavender product was Wash with deionized water for 5 to 8 times and freeze-dry to obtain the precursor of carbon@nickel cobaltate; then sinter the precursor of carbon@nickel cobaltate in a nitrogen atmosphere at 350°C for 5h, and wait until the temperature drops to about 80°C Take the sample out, cool it to room temperature...

Embodiment 2

[0028] In this example, manganese oxide is used instead of carbon spheres to prepare manganese oxide@nickel cobaltate@ferric oxide. The specific preparation process is as follows:

[0029] (1) Preparation of manganese oxide@nickel cobaltate: first weigh 0.1-0.2g of manganese dioxide nanorods, 0.30-0.70g of nickel nitrate, 1.00-1.30g of cobalt nitrate and 1.10-1.60g with an electronic balance urea, then measure 50-70ml of deionized water with a graduated cylinder, mix manganese oxide, nickel nitrate, cobalt nitrate, urea and deionized water in a 100ml beaker, and stir magnetically at room temperature for 30-60min to obtain a mixed solution. Then transfer the mixed solution to a 100ml reaction kettle, react at 150-200°C for 3-6 hours to obtain the product, and slowly cool it to room temperature, then wash the lavender product with deionized water for 5-8 times and freeze-dry to obtain Precursor of manganese oxide@nickel cobaltate; then sinter the obtained precursor of manganese ...

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
Diameteraaaaaaaaaa
Login to View More

Abstract

The invention belongs the technical field of functional composite materials, and relates to a preparation method for a multi-layer core-shell structural carbon@nickel cobaltate@ferroferric oxide composite material. The preparation method comprises firstly mixing glucose, nickel nitrate, cobalt nitrate, urea and deionized water, transferring the mixture to a reaction kettle, and performing a reaction to obtain a light purple product, cooling the product to room temperature, then cleaning the light purple product, performing frozen drying, sintering, and cooling through temperature decreasing, so as to obtain carbon@nickel cobaltate, adding the carbon@nickel cobaltate into deionized water, performing heating, introducing nitrogen, performing stirring, then adding ferric chloride and ferrous chloride into the solution and dispersing the ferric chloride and the ferrous chloride, after sufficient dispersing, adding ammonia water and performing a reaction with stirring, so as to obtain a deep red magnetic composite material, washing the deep red magnetic composite material with demonized water, and performing drying, so as to obtain the carbon@nickel cobaltate@ferroferric oxide composite material. The employed raw materials are simple, easily available, low in cost, clean, nontoxic, and wide in source. The reaction time is short, the performance is excellent, and the prepared carbon@nickel cobaltate@ferroferric oxide composite material has wide application values.

Description

[0001] Technical field: [0002] The invention belongs to the technical field of preparation of functional composite materials, and relates to a method for preparing a carbon@cobaltate nickel@ferric oxide composite material with a multilayer core-shell structure. The prepared composite material is used to improve the wave-absorbing performance of the material. , metal oxide and magnetic materials, the multi-layer core-shell carbon@cobaltate@iron tetroxide composite material has significantly better absorbing performance than its single-component material, and the prepared composite material Combining the advantages of high specific surface area and light weight of carbon with the dielectric and magnetic loss properties of nickel cobaltate and iron oxide, and using the large number of interfaces generated by the core-shell structure and the hollow structure in the middle, the incident electromagnetic wave passes through the electrical loss , magnetic loss, interface polarization,...

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
IPC IPC(8): B01J13/06H01F1/09
Inventor 刘敬权王晓霞魏双
Owner QINGDAO UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com