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Method for preparing surface-active onion-like carbon nanospheres based on vapor deposition

An onion-like carbon and surface-active technology, which is applied in the fields of nanotechnology, nanotechnology, and nanotechnology for materials and surface science, can solve the problem of low surface activity of onion-like carbon nanospheres, and achieve good surface activity and thermal stability. Good stability, thermal stability and wide practicability

Active Publication Date: 2020-03-03
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method for preparing surface-active onion-like carbon nanospheres based on vapor deposition, so as to improve the problem of low surface activity of onion-like carbon nanospheres prepared by the existing chemical vapor deposition method

Method used

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  • Method for preparing surface-active onion-like carbon nanospheres based on vapor deposition
  • Method for preparing surface-active onion-like carbon nanospheres based on vapor deposition
  • Method for preparing surface-active onion-like carbon nanospheres based on vapor deposition

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Measure 2.5mL (1.9g) of n-dodecane, weigh 0.1g of ferrocene, put them together in 5mL of deionized water, mix them evenly by ultrasonic, and put them into a quartz boat. Place the quartz boat in a horizontal resistance furnace, and place a glass slide at the rear of the furnace tube to collect the product.

[0026] Use argon as the carrier gas, adjust the flow rate of the carrier gas to 30mL / min to exhaust the air in the furnace tube and start heating; when the temperature rises from room temperature to 100°C at a rate of 10°C / min, reduce the flow rate of the carrier gas to 3mL / min min; continue to heat up to 700°C at the same heating rate, adjust the carrier gas flow rate to 5mL / min, and react for 20 minutes, so that the vaporized n-dodecane is fully carbonized in the high-temperature reaction zone and deposited on the pre-placed glass slide in the furnace tube .

[0027] After the reaction, the flow rate of the carrier gas was adjusted to 10 mL / min, and the glass sli...

Embodiment 2

[0034] Measure 1.5mL (1.1g) of n-dodecane and 0.1g of ferrocene, put them together in 5mL of deionized water, mix them evenly by ultrasonic, and put them into a quartz boat. Place the quartz boat in a horizontal resistance furnace, and place a glass slide at the rear of the furnace tube to collect the product.

[0035] The carbonization reaction was carried out according to the conditions of Example 1, and surface-active onion-like carbon nanospheres with a particle diameter of about 30 nm were prepared.

Embodiment 3

[0037] Measure 2.5mL (1.9g) of n-dodecane and 0.1g of ferrocene, put them together in 10mL of deionized water, mix them evenly by ultrasonic, and put them into a quartz boat. Place the quartz boat in a horizontal resistance furnace, and place a glass slide at the rear of the furnace tube to collect the product.

[0038] The carbonization reaction was carried out according to the conditions of Example 1, and surface-active onion-like carbon nanospheres with a particle diameter of about 30 nm were prepared.

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Abstract

The invention discloses a method for preparing surface-active onion-like carbon nanospheres based on gas phase deposition, which uses liquid organic small molecule alkane n-dodecane as a carbon source, and in an inert carrier gas environment where a ferrocene catalyst exists, the temperature ranges from 650 to The chemical vapor deposition reaction is carried out at a high temperature of 700°C to directly prepare onion-like carbon nanospheres with high surface activity consisting of onion-like graphitized shells coated with ferric oxide nanoparticles. The onion-shaped carbon nanosphere product prepared by the invention has good surface activity and thermal stability, has wide practicability, and can be applied to fields such as adsorption materials, energy storage materials, catalytic materials, and medical materials.

Description

technical field [0001] The invention belongs to the technical field of nano-carbon material preparation, and relates to a method for preparing carbon nanospheres, in particular to a method for preparing onion-shaped carbon nanospheres. Background technique [0002] Onion-like carbon nanospheres have been widely used in electricity, optics, magnetism and mechanics due to their unique hollow cage structure, good airtightness, multi-layer graphite wrapping, large specific surface area, high conductivity and good thermal stability. exhibited excellent performance. [0003] The chemical vapor deposition method has a simple process and strong controllability, and can realize the mass synthesis of onion-like carbon nanospheres. The preparation process is generally to crack low-molecular hydrocarbons into carbon sources under a certain temperature and pressure, and the carbon sources are gradually deposited on the pre-prepared catalysts to generate onion-shaped carbon nanospheres o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G49/08C01B32/18B82Y40/00B82Y30/00
CPCC01G49/08C01B32/18B82Y40/00B82Y30/00C01P2004/80C01P2004/64C01P2004/03C01P2002/72C01P2002/82C01P2002/88C01P2004/04C23C16/26C23C16/4417C23C16/4481B01J31/1616C01P2004/32C23C16/45519C23C16/45534Y10T428/30
Inventor 秦蕾刘伟峰崔燕刘旭光杨永珍
Owner TAIYUAN UNIV OF TECH
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