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Preparation method of self-absorption nitrogen-sulfur doped porous carbon

A nitrogen-sulfur co-doping, porous carbon technology, applied in the fields of botanical equipment and methods, chemical instruments and methods, nitrogen fertilizers, etc., can solve the problems of high cost, unfavorable large-scale application, complex process, etc. Effect

Inactive Publication Date: 2018-08-07
王干
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, the doping of the above-mentioned heteroatoms is a post-processing method to achieve doping, specifically, the carbon material is prepared first, and then doped, or the carbon source and the doping source are subjected to high temperature at the same time. Processing to obtain doped materials, this method is not only complicated in process and high in cost, but also poor in controllability of the doping process, which is not conducive to large-scale application

Method used

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  • Preparation method of self-absorption nitrogen-sulfur doped porous carbon
  • Preparation method of self-absorption nitrogen-sulfur doped porous carbon

Examples

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Effect test

Embodiment 1

[0037]Weigh thiourea and melamine at a mass ratio of 1:1, add them to 100ml of boiled cold water, stir until completely dissolved, and then add appropriate amount of ammonium phosphate, potassium nitrate, ammonium sulfate, nitric acid to the above solution Ammonium and ferrous sulfate, the above substances are subjected to sufficient ultrasonic treatment to obtain a culture medium; put onions of appropriate size into the above culture medium for cultivation and growth, and after 1 week, the grown onions are taken out from the culture medium to obtain Samples to be processed: Cut the above samples to be processed, take the buds that grow out of them, cut them into pieces, and then dehydrate them in an oven at 100°C. After dehydration, grind the dried leaves with a mortar , and then place the product in a magnetic boat and carbonize at 500°C for 2 hours. After the carbonization is completed, water vapor is introduced into the tube furnace, and the temperature is raised to 800°C a...

Embodiment 2

[0039] Weigh thiourea and melamine at a mass ratio of 1:1, add them to 100ml of boiled cold water, stir until completely dissolved, and then add appropriate amount of ammonium phosphate, potassium nitrate, ammonium sulfate, nitric acid to the above solution Ammonium and ferrous sulfate, the above-mentioned substances are subjected to sufficient ultrasonic treatment to obtain a culture solution; put onions of appropriate size into the above-mentioned culture solution for cultivation and growth, and after 2 weeks, the grown onions are taken out from the culture solution to obtain Samples to be processed: Cut the above samples to be processed, take the buds that grow out of them, cut them into pieces, and then dehydrate them in an oven at 100°C. After dehydration, grind the dried leaves with a mortar , and then place the product in a magnetic boat and carbonize at 500°C for 2 hours. After the carbonization is completed, water vapor is introduced into the tube furnace, and the temp...

Embodiment 3

[0041] Weigh thiourea and melamine at a mass ratio of 1:1, add them to 100ml of boiled cold water, stir until completely dissolved, and then add appropriate amount of ammonium phosphate, potassium nitrate, ammonium sulfate, nitric acid to the above solution Ammonium and ferrous sulfate, the above-mentioned substances are subjected to sufficient ultrasonic treatment to obtain a culture solution; put onions of appropriate size into the above-mentioned culture solution for cultivation and growth, and after 2 weeks, the grown onions are taken out from the culture solution to obtain Samples to be processed: Cut the above samples to be processed, take the buds that grow out of them, cut them into pieces, and then dehydrate them in an oven at 100°C. After dehydration, grind the dried leaves with a mortar , and then place the product in a magnetic boat and carbonize at 500°C for 2 hours. After the carbonization, water vapor is introduced into the tube furnace, and the temperature is ra...

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Abstract

According to the invention, porous carbon heteroatom doping is realized by a self-absorption manner, wherein self-absorption is specifically shown in a manner that heteroatom doping is combined with material preparation, specifically, a simple and easily-available biomass material is selected as a reaction precursor so as to provide a carbon source; meanwhile, the difference from the prior art isthat: according to the application, heteroatom doping is compounded into the biomass growth process, that is, in the biomass growth process, by the capillary absorption effect, doping atom is synchronously absorbed into the biomass body while the biomass absorbs nutrient substances, so as to obtain a biomass material rich in heteroatom; and by processing the biomass material, the doped porous carbon can be obtained by one step, without the need of separate doping subsequently, and therefore, on one hand, saving of process and energy consumption are benefited, and on the other hand, uniform controllable doping of the heteroatom can be realized.

Description

technical field [0001] The invention belongs to the technical field of preparation and application of carbon materials, and in particular relates to a preparation method of self-absorbing nitrogen-sulfur-doped porous carbon. Background technique [0002] With the development of science and technology and the continuous progress of society, the application field of porous carbon is rapidly expanding, and people's requirements for the preparation process and performance of porous carbon are also getting higher and higher. Porous carbon refers to materials with carbon as the basic skeleton and different pore sizes. Such materials usually have a developed void structure, good chemical stability, high specific surface area and unique electronic conductivity characteristics. They are used in modern industrial production. Indispensable and important materials, widely used in the fields of adsorption, catalyst carrier, energy and electronics, etc. [0003] Supercapacitors, also kno...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B32/336C05G1/00A01G22/35A01G24/10
CPCA01G22/35A01G24/10C01B32/336C05B7/00C05G5/23C05C1/00C05C3/00C05C5/02C05C11/00C05D9/02Y02P20/10
Inventor 张亮其他发明人请求不公开姓名
Owner 王干
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