Supercharge Your Innovation With Domain-Expert AI Agents!

Method for preparing magnetic core mesoporous hollow carbon spheres by vacuum nano pouring

A technology of mesoporous hollow spheres and hollow carbon spheres, applied in the fields of inorganic material magnetism, inductance/transformer/magnet manufacturing, electrical components, etc., to achieve simple operation, convenient control, and intuitive and large effects

Inactive Publication Date: 2011-05-11
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
View PDF2 Cites 9 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no similar method to prepare magnetic core mesoporous hollow carbon spheres at home and abroad.

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 magnetic core mesoporous hollow carbon spheres by vacuum nano pouring
  • Method for preparing magnetic core mesoporous hollow carbon spheres by vacuum nano pouring
  • Method for preparing magnetic core mesoporous hollow carbon spheres by vacuum nano pouring

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] According to literature reports, aluminum-containing cubic phase mesoporous hollow silica spheres were prepared. Prepare 25 mL of 0.5 M ferric nitrate solution in a beaker with hydrated ferric nitrate, then add 1.0 g of mesoporous hollow spheres, and stir with a glass rod for 1 minute to form a cloudy solution. Put the beaker with ferric nitrate turbid solution into the vacuum box, and vacuumize (10 -1 Pa), and maintain the vacuum condition for 5 minutes. Then open the vacuum valve and adjust the vacuum box to atmospheric pressure. Stay in this state for 5 minutes. Then take out the beaker and suck out the ferric nitrate solution, leaving the hollow ball precipitate that has been injected with the ferric nitrate solution in the bottle. The beaker containing the precipitate was dried at normal pressure below 80 °C, and then washed three times with 99.7% absolute ethanol. Afterwards, dry at normal pressure below 80°C. The dried hollow spheres were put into a crucible...

Embodiment 2

[0031] Described according to technological process (with embodiment example 1), adopt the ferric nitrate ethanolic solution of 0.25M, can make the ferric nitrate that contains a certain amount 2 o 3 Nuclear mesoporous hollow spheres. After subsequent addition of carbon source and heat treatment, magnetic Fe can be obtained 3 o 4 Mesoporous hollow carbon spheres with nuclei ( image 3 a), the magnetic size is 7.8emu / g. The obtained magnetic mesoporous hollow carbon spheres have a mesoporous size of 2.32 nm and a pore volume of 0.46 cm 3 g -1 , the specific surface area is 772.7m 2 g -1 .

Embodiment 3

[0033] Described according to technological process (with embodiment example 1), adopt the ferric nitrate ethanolic solution of 1.0M, can make the ferric nitrate that contains a certain amount 2 o 3 Nuclear mesoporous hollow spheres. After the subsequent addition of carbon source and heat treatment, magnetic Fe can be obtained 3 o 4 Mesoporous hollow spheres with nuclei ( image 3 c), the magnetic size is 45.1emu / g. The obtained magnetic mesoporous hollow carbon spheres have a mesoporous size of 2.32 nm and a pore volume of 0.20 cm 3 g -1 , the specific surface area is 338.9m 2 g -1 .

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
Magneticaaaaaaaaaa
Pore volumeaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing magnetic core mesoporous hollow carbon spheres by vacuum nano pouring. In the method, mesoporous hollow spheres with different ferric oxide core amounts are adopted as poured objects, and mesoporous hollow carbon spheres with adjustable magnetism can be prepared by ingeniously utilizing carbonized carbon through reductibility. At the same time, the phase composition of the magnetic core can be accurately controlled by carbonization temperature. The method in the invention has simple preparation conditions, is easy to operate and is suitable for batch production.

Description

technical field [0001] The invention provides a method for preparing magnetic core mesoporous hollow carbon spheres by vacuum nano casting, which belongs to the field of synthesis of inorganic nanometer materials. technical background [0002] Due to the large specific surface area, large pore volume, chemical inertness and excellent mechanical stability, mesoporous carbon has broad application prospects in the fields of catalysis, electrode materials, sensors, adsorbents and hydrogen storage materials. Hollow mesoporous carbon spheres have greater advantages in material transport due to their large pore volume and hollow mesoporous channels. [0003] There have been some reports on mesoporous hollow carbon spheres in the past few years, generally adopting "hard template method", for example, using nanospheres with mesoporous silica core-shell structure as a template to prepare mesoporous hollow carbon spheres (2002, 14, 19-21, Advanced Materials). [0004] In addition, th...

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): H01F1/03H01F41/02
Inventor 郭利民施剑林
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com