A kind of preparation method and application of porous carbon

A technology of porous carbon and carbon materials, applied in chemical instruments and methods, nano-carbon, other chemical processes, etc., can solve the problems of low processing efficiency, energy consumption, refractory degradation, etc., to improve the capture performance and superior capture effect. , the effect of improving utilization

Active Publication Date: 2022-04-29
JIANGSU TIANYU ENVIRONMENTAL PROTECTION GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in most cases, the template method is very time-consuming and energy-consuming due to its complicated preparation method, which is not conducive to large-scale preparation, and the obtained material is prone to structural collapse due to the generation of a large number of micropores during the activation process, which reduces the The efficiency of capturing organic matter
Therefore, the problems existing in the prior art are: chemical wastewater is biologically difficult to degrade, porous carbon has been widely used in chemical wastewater treatment, and oxidation or catalytic oxidation is generally used for low-concentration chemical wastewater, and the actual COD removal rate is generally only 20~30%, low processing efficiency

Method used

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  • A kind of preparation method and application of porous carbon
  • A kind of preparation method and application of porous carbon
  • A kind of preparation method and application of porous carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Step 1: Put salts containing a certain amount of water, boron, and biofunctional macromolecules (containing amino and carboxyl groups) in a steamer-shaped container and heat the water vapor to a certain temperature to cause it to lose its original spatial structure and denature;

[0034] Step 2: freeze-drying: the obtained precursor particles are freeze-dried to form a "honeycomb" structure material composed of nanosheets;

[0035] Step 3: Carry out the "honeycomb" structure substance composed of nanosheets obtained after the above-mentioned freeze-drying

[0036] Electron beam radiation heating modification, the electron beam radiation heating modification time is 70 minutes, and the functionalized porous nanosheet carbon material containing sulfur, boron, nitrogen elements and bulk phase defects is prepared, showing good organic chemical wastewater capture effect.

[0037] figure 1 It is the scanning electron micrograph (SEM) of C-BSN-70 prepared in Example 1. Afte...

Embodiment 2

[0040] Step 1: Put salts containing a certain amount of water, boron, and biofunctional macromolecules (containing amino and carboxyl groups) in a steamer-shaped container and heat the water vapor to a certain temperature to cause it to lose its original spatial structure and denature;

[0041] Step 2: freeze-drying: the obtained precursor particles are freeze-dried to form a "honeycomb" structure material composed of nanosheets;

[0042] Step 3: Carry out the "honeycomb" structure substance composed of nanosheets obtained after the above-mentioned freeze-drying

[0043] Electron beam radiation heating modification, the electron beam radiation heating modification time is 20 minutes, and the functionalized porous nanosheet carbon material containing sulfur, boron, nitrogen elements and bulk phase defects is prepared, showing good organic chemical wastewater capture effect.

Embodiment 3

[0045] Step 1: Put salts containing a certain amount of water, boron, and biofunctional macromolecules (containing amino and carboxyl groups) in a steamer-shaped container and heat the water vapor to a certain temperature to cause it to lose its original spatial structure and denature;

[0046] Step 2: freeze-drying: the obtained precursor particles are freeze-dried to form a "honeycomb" structure material composed of nanosheets;

[0047] Step 3: Carry out the "honeycomb" structure substance composed of nanosheets obtained after the above-mentioned freeze-drying

[0048] Electron beam radiation heating modification, the electron beam radiation heating modification time is 40 minutes, and the functionalized porous nanosheet carbon material containing sulfur, boron, nitrogen elements and bulk phase defects is prepared, showing good organic chemical wastewater capture effect.

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Abstract

The invention discloses a preparation method and application of porous carbon. Its preparation method includes (1) placing certain moisture, boron-containing salts and biofunctional macromolecules (containing amino and carboxyl groups) in a steamer-shaped container and heating the water vapor to a certain temperature to cause it to lose its original spatial structure and denature . (2) The obtained precursor particles are freeze-dried to form a "honeycomb" structure material composed of nanosheets; (3) Use electron beam radiation to heat and modify to obtain functions containing sulfur, boron, nitrogen and bulk defects The porous nano-sheet carbon material shows a good trapping effect for organic chemical wastewater. The invention realizes the removal of the ultra-low concentration organic matter in the chemical waste water through the organic matter in the chemical waste water captured by functionalized functional groups and defects.

Description

technical field [0001] The invention belongs to the field of preparation of chemical wastewater treatment materials, in particular to a preparation method of functionalized porous carbon based on organic chemical wastewater capture. Background technique [0002] High specific surface area and appropriate element doping materials are the key factors to provide active sites and channels (Acc. Chem. Res. 2015, 48, 1666-1675). In addition, surface functional modification (such as heteroatom doping) and doping can improve the adsorption and capture of chemical organic wastewater. However, existing commercial activated carbons limit the practical application in this field. Therefore, it is necessary to develop simple and clean synthetic technology routes and develop novel and advanced functional porous materials for the efficient capture of chemical organic wastewater to meet the key needs of environmental purification. [0003] New functional porous materials for capturing chem...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B32/15B01J20/20B01J20/28B01J20/30C02F1/28C02F101/30
CPCB01J20/205C01B32/15C02F1/283B01J20/28045B01J20/3078C02F2101/30
Inventor 侯建华何成达张淼吴晓歌
Owner JIANGSU TIANYU ENVIRONMENTAL PROTECTION GRP CO LTD
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