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Nitrogen-oxygen-doped carbon nanohorn and preparation method and application thereof

A carbon nano-horn and nitrogen-oxygen technology, which is applied in the application field of nitrogen-oxygen-doped carbon nano-horn and nitrogen-oxygen-doped carbon nano-horn, can solve the problems of low recycling rate of thermally cracked carbon black, environmental pollution, waste of resources and the like , to achieve the effect of easy operation, reducing environmental pollution and improving utilization rate

Pending Publication Date: 2022-07-29
KUNMING UNIV OF SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For example, one of the purposes of the present invention is to solve the problems of resource waste, environmental pollution and low recycling rate of pyrolysis carbon black in a large number of waste tires. Reasonable recycling of tires provides new ideas

Method used

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  • Nitrogen-oxygen-doped carbon nanohorn and preparation method and application thereof
  • Nitrogen-oxygen-doped carbon nanohorn and preparation method and application thereof
  • Nitrogen-oxygen-doped carbon nanohorn and preparation method and application thereof

Examples

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preparation example Construction

[0039]In an exemplary embodiment of the method for preparing nitroxide-doped carbon nanohorns of the present invention, the method for preparing nitroxide-doped carbon nanohorns may include the following steps:

[0040] (1) In the first protective gas environment, thermal cracking treatment is performed on the carbon source, and thermal cracking carbon black is obtained after cooling. The carbon source is waste tire powder.

[0041] It should be noted that the first protective gas may be at least one of nitrogen gas and argon gas. The purpose of setting the first protective gas is to prevent the sample from being oxidized by air.

[0042] The thermal cracking treatment can be performed by placing the carbon source in a heating device, such as a heating tube, and then heating it to a certain temperature under a protective gas, and keeping it for a period of time. black. Among them, the temperature-raising method can adopt the temperature-programmed method.

[0043] In the t...

example 1

[0072] This example provides a method for preparing nitrogen-oxygen-doped carbon nanohorns by using waste tire powder, which is achieved through the following steps.

[0073] Step 1), put the waste tire powder in a quartz boat, spread it evenly, and transfer it to the heating tube of the device. Under nitrogen protection, the temperature was raised to 200°C at a heating rate of 2°C / min, and kept for 1 h, and then heated to 400°C at the same heating rate and kept for 1 h. After the reaction was completed, it was cooled to room temperature under a nitrogen atmosphere, and the sample was taken out to obtain thermal cracked carbon black. Nitrogen is the reactive gas required for the preparation of carbon nanohorns by the DC arc method.

[0074] Step 2), weigh 10 g of the thermally cracked carbon black obtained in step 1) and place it in a beaker, add 20 mL of nitric acid, acidify it in an oil bath at 60°C for 2 hours, and then wait for the sample to cool to room temperature and t...

example 2

[0079] This example provides a method for preparing nitrogen-oxygen-doped carbon nanohorns by using waste tire powder, which is achieved through the following steps.

[0080] Step 1), put the waste tire powder in a quartz boat, spread it evenly, and transfer it to the heating tube of the device. Under nitrogen protection, the temperature was raised to 200°C at a heating rate of 2°C / min, and kept for 1 h, and then heated to 400°C at the same heating rate and kept for 2 h. After the reaction was completed, it was cooled to room temperature under a nitrogen atmosphere, and the sample was taken out to obtain thermal cracked carbon black.

[0081] In step 2), weigh 10 g of the thermally cracked carbon black obtained in step 1) and place it in a beaker, add 20 mL of nitric acid, acidify it in an oil bath at 80°C for 2 hours, then take out the sample after cooling to room temperature, add a large amount of nitric acid Soak in ionized water and wash with deionized water until the sol...

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Abstract

The invention provides a nitrogen-oxygen-doped carbon nanohorn and a preparation method and application thereof.The preparation method comprises the following steps that in a first protective gas environment, thermal cracking treatment is conducted on a carbon source, thermal cracking carbon black is obtained after cooling, and the carbon source is waste tire powder; and taking the thermal cracking carbon black as an anode and a high-purity graphite rod as a cathode, carrying out plasma treatment in a second protective gas environment, and obtaining the nitrogen-oxygen doped carbon nanohorn after the reaction is finished. The nitrogen-oxygen-doped carbon nanohorn is prepared by the preparation method, and can be applied to a supercapacitor. The method has the beneficial effects that the used raw materials are rich, cheap and easy to obtain, the preparation process is simple, easy to operate, short in period, free of introduction of a catalyst and environment-friendly, and a new thought is provided for recovery and utilization of waste tires.

Description

technical field [0001] The invention relates to the technical field of recycling and processing waste tires, in particular to a preparation method for preparing nitrogen-oxygen-doped carbon nanohorns by using waste tires, a nitrogen-oxygen-doped carbon nanohorn, and a nitrogen-oxygen-doped carbon nanohorn Application of nanohorns. Background technique [0002] The composition of tires is relatively complex, mainly composed of 55-60% rubber, 30-33% carbon black, 6-9% organic additives and 3-6% inorganic additives. After pyrolysis of waste tires, oil can be recovered. products, pyrolysis gas and pyrolysis carbon black. For the recycling and utilization of waste tires, most of the waste tires flow into the "local oil refining" workshops, causing irreparable damage to the ecological environment. Most of the products such as pyrolysis oil and pyrolysis carbon black are of low quality and need further improvement. For example, the Chinese utility model patent with the publicatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G11/86H01G11/44H01G11/50H01G11/34H01G11/36
CPCH01G11/86H01G11/44H01G11/34H01G11/50H01G11/36
Inventor 梁风侯圣平张涛张达向孙祖沈可雷勇杨斌
Owner KUNMING UNIV OF SCI & TECH
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