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

Controllable synthesis method for nitrogen and phosphorus co-doped graphitized carbon ball with hollow structure

A technology of hollow structure and synthesis method, applied in the direction of nano-carbon, carbon preparation/purification, nanotechnology for materials and surface science, etc., to achieve cost reduction, easy recycling, and low price

Inactive Publication Date: 2013-07-03
CHINA UNIV OF MINING & TECH +1
View PDF9 Cites 51 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the carbon spheres obtained by this synthesis method do not have graphitic carbon

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: First, 4.0 grams of glucose, 0.21 grams of sodium stannate, and 0.22 grams of ferric chloride, in a molar ratio of 25:1:1, were dissolved in 40 milliliters of deionized water, stirred evenly, and moved into a 50 milliliter hydrothermal reaction kettle. After reacting at 160° C. for 15 hours, the reaction product was filtered, and washed with 25° C. deionized water to remove impurities. After the reaction product was vacuum-dried at 70°C for 12 hours, it was placed in a high-temperature tube furnace and heated at 1000°C for 2 hours, with a heating rate of 5°C per minute and an ammonia flow rate of 30 milliliters per minute. After naturally cooling to room temperature, pass 14mol / L phosphoric acid was soaked at 90°C for 6 hours to remove tin and iron to obtain nitrogen-phosphorus co-doped graphitized carbon spheres with a hollow structure. The shell micropore size (0.7nm, 1.1nm), the carbon core mesopore size is 4.7nm, the specific surface area is about 420 squ...

Embodiment 2

[0039] Embodiment 2: first with 4.0 grams of glucose, 0.21 gram of sodium stannate, 0.22 gram of iron chloride, molar ratio 25:1:1, be dissolved in 20 milliliters of deionized water and 20 milliliters of phosphoric acid (phosphoric acid concentration 52%~54% ) mixture, stirred evenly and moved into a 50 ml hydrothermal reaction kettle, reacted at 160°C for 3 hours, filtered the reaction product, washed with 25°C deionized water to remove impurities. After the reaction product was vacuum-dried at 100° C. for 4 hours, it was then placed in a high-temperature tube furnace and heated at 1000° C. for 2 hours. The heating rate was 5° C. per minute, and the ammonia flow rate was 30 milliliters per minute. After cooling naturally to room temperature, pass 5mol / L phosphoric acid was soaked at 90°C for 6 hours to remove tin and iron to obtain nitrogen-phosphorus co-doped graphitized carbon spheres with a hollow structure. The shell micropore size (0.7nm, 1.1nm), the carbon core mesopore...

Embodiment 3

[0040] Embodiment 3: first with 4.0 grams of glucose, 0.21 gram of sodium stannate, 0.22 gram of iron chloride, molar ratio 25:1:1, be dissolved in 10 milliliters of deionized water and 30 milliliters of phosphoric acid (phosphoric acid concentration 52%~54% ) mixture, stirred evenly and moved into a 50 ml hydrothermal reaction kettle, reacted at 160°C for 9 hours and filtered the reaction product, washed with 50°C deionized water to remove impurities. After the reaction product was vacuum-dried at 100° C. for 4 hours, it was then placed in a high-temperature tube furnace and heated at 1000° C. for 2 hours. The heating rate was 5° C. per minute, and the ammonia flow rate was 30 milliliters per minute. After cooling naturally to room temperature, pass 2mol / L phosphoric acid was soaked at 90°C for 6 hours to remove tin and iron to obtain nitrogen-phosphorus co-doped graphitized carbon spheres with a hollow structure, with an outer diameter of 125 nanometers and an inner diameter ...

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
Mesopore sizeaaaaaaaaaa
Pore sizeaaaaaaaaaa
Mesopore sizeaaaaaaaaaa
Login to View More

Abstract

The invention relates to a controllable synthesis method for a nitrogen and phosphorus co-doped graphitized carbon ball with a hollow structure. The method comprises the following preparation steps: (1) a carbon source, soluble metal salt and a catalyst are dissolved in a solvent according to a molar ratio, the mixture is transferred to a hydrothermal reaction kettle for hydrothermal synthesis after stirred to be dissolved completely, and an obtained precipitate is cleaned, filtered and dried to obtain a primary product; (2) the obtained primary product is subjected to high-temperature reduction under the protection of gas in a high-temperature reaction furnace; and (3) the product obtained by high-temperature reduction is placed in an acid solution to be soaked, and then cleaned, filtered and dried to obtain the nitrogen and phosphorus co-doped graphitized carbon ball with the hollow structure. The nitrogen and phosphorus co-doped graphitized carbon ball with the hollow structure prepared with the method has the advantages that the appearance is uniform, a carbon shell has a cellular structure, the interior of the carbon ball has a mesoporous carbon support structure, the graphitization degree is good, and the like; and the carbon ball can be used in various fields of efficient catalytic conversion, energy storage and conversion, medicine release and control, substance adsorption and separation and the like. A template-free hydrothermal synthesis technique is simple and controllable, and can be used for mass production.

Description

technical field [0001] The invention relates to a synthesis method of nitrogen and phosphorus co-doped nano hollow carbon spheres, in particular to a controllable synthesis method of nitrogen and phosphorus co-doped graphitized carbon spheres with a hollow structure. Background technique [0002] Nano hollow carbon sphere is a special carbon material with high chemical stability, low density, good thermal stability and biocompatibility, not only can be used as electrode material, catalyst carrier, gas storage medium, lubrication It is also used as dyes, rubber reinforcement materials, lightweight structural materials and many other fields, attracting more and more attention. [0003] At present, hollow carbon spheres are mainly prepared by pyrolysis of organic matter, chemical vapor deposition, dielectric reduction, laser distillation, arc discharge, template self-assembly and other methods. These methods are usually carried out under high temperature conditions, the reacti...

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): C01B31/02B82Y30/00B82Y40/00C01B32/05C01B32/15
Inventor 尹诗斌罗林荆胜羽朱强强卫怡杨力祥贾优黄飞张绍良强颖怀
Owner CHINA UNIV OF MINING & TECH
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