Preparation method of carbon spheres

A carbon ball, glucose solution technology, applied in nanotechnology, nanotechnology, nanotechnology and other directions for materials and surface science, can solve the problems of impurities, expensive equipment, large size, etc., to achieve short reaction time, reduce production Cost, Sphere Complete Effect

Inactive Publication Date: 2015-09-30
SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for preparing carbon sphere...

Method used

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  • Preparation method of carbon spheres
  • Preparation method of carbon spheres
  • Preparation method of carbon spheres

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1) Use dilute hydrochloric acid to adjust the pH of the double deionized water to 3, use it as a solvent, dissolve it in glucose, and prepare a glucose solution with a concentration of 8g / 100ml;

[0032] 2) Take an appropriate amount of the above-mentioned glucose solution and put it in a 25ml stainless steel reaction kettle with a polytetrafluoroethylene lining, and place it in an oven at 180°C for 4 hours, and cool it down to room temperature naturally to obtain a carbon sphere solution;

[0033] 3) Centrifuge the above solution, and ultrasonically disperse and wash it with deionized water and absolute ethanol until the dispersion is clear after centrifugation;

[0034] 4) Dry the solid obtained after the above centrifugation in a vacuum oven at 80°C for 8 hours to obtain carbon spheres.

[0035] figure 1 Shown is the transmission electron micrograph of the carbon spheres obtained in Example 1. It can be seen from the figure that the diameter of the carbon spheres i...

Embodiment 2

[0037] 1) Use dilute hydrochloric acid to adjust the pH of the double deionized water to 6, use it as a solvent, dissolve it in glucose, and prepare a glucose solution with a concentration of 8g / 100ml;

[0038] 2) Take an appropriate amount of the above-mentioned glucose solution and put it in a 25ml stainless steel reaction kettle with a polytetrafluoroethylene lining, and place it in an oven at 180°C for 4 hours, and cool it down to room temperature naturally to obtain a carbon sphere solution;

[0039] 3) Centrifuge the above solution, and ultrasonically disperse and wash it with deionized water and absolute ethanol until the dispersion is clear after centrifugation;

[0040] 4) Dry the solid obtained after the above centrifugation in a vacuum oven at 80°C for 8 hours to obtain carbon spheres.

[0041] figure 2 Shown is the transmission electron micrograph of the carbon spheres obtained in Example 2. It can be seen from the figure that the diameter of the carbon spheres ...

Embodiment 3

[0043] 1) Use dilute hydrochloric acid to adjust the pH of the double deionized water to 9, use it as a solvent, dissolve it in glucose, and prepare a glucose solution with a concentration of 8g / 100ml;

[0044] 2) Take an appropriate amount of the above-mentioned glucose solution and put it in a 25ml stainless steel reaction kettle with a polytetrafluoroethylene lining, and place it in an oven at 180°C for 4 hours, and cool it down to room temperature naturally to obtain a carbon sphere solution;

[0045] 3) Centrifuge the above solution, and ultrasonically disperse and wash it with deionized water and absolute ethanol until the dispersion is clear after centrifugation;

[0046]4) Dry the solid obtained after the above centrifugation in a vacuum oven at 80°C for 8 hours to obtain carbon spheres.

[0047] image 3 Shown is the transmission electron micrograph of the carbon spheres obtained in Example 3. It can be seen from the figure that the diameter of the carbon spheres is...

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Abstract

The invention discloses a preparation method of carbon spheres, which comprises the following steps: s1. preparing a solution with the pH value of 3-10 from acid and alkali; s2. adding glucose into the solution obtained in the step s1 to prepare a 1-10g/100ml glucose solution; s3. putting the glucose solution obtained in the step s2 into a hydrothermal kettle, keeping the temperature at 160-200 DEG C for 2-20 hours, and cooling to room temperature; and s4. washing and drying the product obtained in the step s3 to obtain the target product. The method implements mass preparation and particle size control of carbon spheres with particle size of less than 100nm, does not have the participation of any organic solvent and toxic chemical reagent in the reaction process, can effectively avoid the problems of structure defects and environmental pollution caused by impurity introduction, and can be widely used for biochemical and biological diagnosis due to the nontoxic characteristic of the carbon spheres. The whole preparation process is simple to operate, has the advantages of high controllability, favorable repetitiveness and environment friendliness, and is suitable for large-scale production.

Description

technical field [0001] The application belongs to the field of preparation of nanometer microspheres, and in particular relates to a preparation method of carbon spheres with a diameter of 50-100nm. Background technique [0002] As a new type of functional carbon material, carbon spheres have many excellent characteristics such as low density, high chemical and thermal stability, good thermal conductivity, good intrinsic damping, controllable specific surface area and good biocompatibility. Due to its regular spherical structure, carbon spheres have huge potential applications in many new technology fields such as gas storage, catalyst carrier, drug delivery, lithium-ion secondary battery electrode materials, lightweight structural materials, supercapacitor electrode materials, and combustion batteries. value. [0003] At present, scholars have studied a variety of methods for preparing carbon spheres, such as solvent (hydro) thermal method, chemical vapor deposition method...

Claims

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Application Information

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IPC IPC(8): C01B31/02B82Y40/00B82Y30/00
Inventor 谭余波沈少华封心建
Owner SUZHOU INST OF NANO TECH & NANO BIONICS CHINESE ACEDEMY OF SCI
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