One-step synthesis method of surface loaded magnetic Fe2O3 nano-particle colloidal carbon ball

A nano-particle and surface-loading technology is applied in the field of one-step synthesis of surface-loaded magnetic Fe2O3 nanoparticle colloidal carbon spheres to achieve the effects of good spherical shape, easy operation and easy control of conditions.

Inactive Publication Date: 2008-11-12
TONGJI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Li Yadong of Tsinghua University and others synthesized colloidal carbon spheres with functional groups such as hydroxyl and carbonyl groups at a low temperature below 200 °C using glucose as a carbon source by hydrothermal method. These carbon spheres with active groups on the surface can interact with other ions Form carbon spheres with metals on the surface, but the synthesis of carbon spheres with metals on the surface needs to add metal salt solution and the synthesis process needs to be distributed

Method used

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  • One-step synthesis method of surface loaded magnetic Fe2O3 nano-particle colloidal carbon ball
  • One-step synthesis method of surface loaded magnetic Fe2O3 nano-particle colloidal carbon ball
  • One-step synthesis method of surface loaded magnetic Fe2O3 nano-particle colloidal carbon ball

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Experimental program
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Effect test

Embodiment 1

[0023] (1) Disperse 10 mg of 4-ferrocenylbutyric acid in 8 mL of deionized water.

[0024] (2) Add the mixture obtained in step (1) into a reaction kettle with a volume of 13 mL.

[0025] (3) Place the reactor containing the mixture in step (2) in a temperature-controlled furnace and heat it to 160° C. for 24 hours, then take out the container, and let it cool down to room temperature naturally. A black product was obtained, and the synthesized product was sequentially washed with deionized water, absolute ethanol and acetone, and centrifuged to obtain the desired product.

[0026] figure 1 In the SEM image of the product obtained under this reaction condition, the average size of colloidal carbon spheres is about 500nm.

Embodiment 2

[0028] (1) Disperse 50 mg of 4-ferrocenylbutyric acid in 8 mL of deionized water.

[0029] (2) Add the mixture obtained in step (1) into a reaction kettle with a volume of 13 mL.

[0030] (3) Place the reactor containing the mixture in step (2) in a temperature-controlled furnace and heat it to 160° C. for 24 hours, then take out the container, and let it cool down to room temperature naturally. A black product was obtained, and the synthesized product was sequentially washed with deionized water, absolute ethanol and acetone, and centrifuged to obtain the desired product.

[0031] figure 2 According to the SEM and HRTEM images of the product obtained under this reaction condition, the average size of colloidal carbon spheres is about 950nm. From the HRTEM image, it can be seen that the surface of colloidal carbon spheres is loaded with magnetic Fe 2 o 3 Nanoparticles.

Embodiment 3

[0033] (1) Disperse 70 mg of 4-ferrocenylbutyric acid in 8 mL of deionized water.

[0034] (2) Add the mixture obtained in step (1) into a reaction kettle with a volume of 13 mL.

[0035] (3) Place the reactor containing the mixture in step (2) in a temperature-controlled furnace and heat it to 160° C. for 24 hours, then take out the container, and let it cool down to room temperature naturally. A black product was obtained, and the synthesized product was sequentially washed with deionized water, absolute ethanol and acetone, and centrifuged to obtain the desired product.

[0036] The average size of colloidal carbon spheres obtained under this reaction condition is about 1 μm.

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Abstract

The invention belongs to the nanometer / micrometer scale carbon sphere material preparation technical field, and in particular relates to a method of one-step synthesis for a colloidal carbon sphere with magnetic Fe2O3 nano-particles loaded on the surface. The method comprises the following steps of: dispersing 4-ferrocenyl butyric acid into de-ionized water, the dosage of the 4-ferrocenyl butyric acid in the water being between 1.25 and 8.75 mg / mL; adding the acquired mixture into a reaction kettle; placing the reaction kettle filled with the mixture into a temperature control furnace, heating the reaction kettle to a temperature of between 140 and 180 DEG C, and reacting for 12 to 24 hours, taking out the reaction kettle, naturally cooling the reaction kettle to room temperature to acquire a black product, washing and centrifugalizing, thereby acquiring the required product. The method has the advantages of adjustable technological parameter, simple operation of the whole preparation process, easily-controlled conditions and convenient after-treatment of the product, so the method can be easy for mass production. The method does not generate byproducts which pollute environment during preparation, and accords with the requirement of sustainable development, thereby being an environment-friendly synthesis process.

Description

technical field [0001] The invention belongs to the technical field of preparation of nano / micro scale carbon sphere materials, in particular to a surface loaded magnetic Fe 2 o 3 One-step Synthesis of Nanoparticle Colloidal Carbon Spheres. Background technique [0002] since C 60 Since the discovery of carbon nanotubes and carbon nanotubes, comprehensive research on carbon materials has been carried out worldwide. Carbon materials with different morphologies have potential applications in many aspects, so carbon materials with unique structures have attracted widespread attention. Many carbon materials with different morphologies such as carbon onions, carbon cones, carbon beads, carbon spheres, etc. have been successfully synthesized. Among these carbon materials with different morphologies, carbon spheres have attracted attention as a new type of material due to their properties similar to fullerene or graphite. These similar properties make carbon spheres widely use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02C01G49/06
Inventor 吴庆生袁品仕程友魁谢劲松
Owner TONGJI UNIV
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