CN111072025A - Coralline activated carbon material and preparation method thereof - Google Patents
Coralline activated carbon material and preparation method thereof Download PDFInfo
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- CN111072025A CN111072025A CN202010064141.5A CN202010064141A CN111072025A CN 111072025 A CN111072025 A CN 111072025A CN 202010064141 A CN202010064141 A CN 202010064141A CN 111072025 A CN111072025 A CN 111072025A
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 239000000463 material Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 239000000243 solution Substances 0.000 claims abstract description 31
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000000843 powder Substances 0.000 claims abstract description 30
- 238000001035 drying Methods 0.000 claims abstract description 28
- 238000005406 washing Methods 0.000 claims abstract description 28
- 229920002488 Hemicellulose Polymers 0.000 claims abstract description 22
- 239000007833 carbon precursor Substances 0.000 claims abstract description 21
- 244000276331 Citrus maxima Species 0.000 claims abstract description 18
- 235000001759 Citrus maxima Nutrition 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000003756 stirring Methods 0.000 claims abstract description 12
- 238000001556 precipitation Methods 0.000 claims abstract description 11
- 238000001994 activation Methods 0.000 claims abstract description 10
- 238000005520 cutting process Methods 0.000 claims abstract description 10
- 239000000706 filtrate Substances 0.000 claims abstract description 10
- 238000000227 grinding Methods 0.000 claims abstract description 10
- 230000007935 neutral effect Effects 0.000 claims abstract description 10
- 239000002244 precipitate Substances 0.000 claims abstract description 10
- 230000004913 activation Effects 0.000 claims abstract description 9
- 238000009656 pre-carbonization Methods 0.000 claims abstract description 9
- 239000003513 alkali Substances 0.000 claims abstract description 6
- 238000000967 suction filtration Methods 0.000 claims abstract description 6
- 239000012670 alkaline solution Substances 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 26
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 5
- 240000000560 Citrus x paradisi Species 0.000 claims 1
- 239000003990 capacitor Substances 0.000 abstract description 8
- 239000007772 electrode material Substances 0.000 abstract description 7
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 79
- 239000008367 deionised water Substances 0.000 description 16
- 229910021641 deionized water Inorganic materials 0.000 description 16
- 239000003575 carbonaceous material Substances 0.000 description 9
- 238000001914 filtration Methods 0.000 description 8
- 239000000203 mixture Substances 0.000 description 8
- 238000010000 carbonizing Methods 0.000 description 4
- 239000002243 precursor Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- 238000001878 scanning electron micrograph Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000047 product Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/318—Preparation characterised by the starting materials
- C01B32/324—Preparation characterised by the starting materials from waste materials, e.g. tyres or spent sulfite pulp liquor
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B32/00—Carbon; Compounds thereof
- C01B32/30—Active carbon
- C01B32/312—Preparation
- C01B32/342—Preparation characterised by non-gaseous activating agents
- C01B32/348—Metallic compounds
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/34—Carbon-based characterised by carbonisation or activation of carbon
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
- H01G11/00—Hybrid capacitors, i.e. capacitors having different positive and negative electrodes; Electric double-layer [EDL] capacitors; Processes for the manufacture thereof or of parts thereof
- H01G11/22—Electrodes
- H01G11/30—Electrodes characterised by their material
- H01G11/32—Carbon-based
- H01G11/44—Raw materials therefor, e.g. resins or coal
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/13—Energy storage using capacitors
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- Organic Chemistry (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Environmental & Geological Engineering (AREA)
- Electric Double-Layer Capacitors Or The Like (AREA)
- Carbon And Carbon Compounds (AREA)
Abstract
The invention relates to a coralline activated carbon material and a preparation method thereof, wherein the preparation method comprises the following steps: 1) removing yellow outer skin of pericarpium Citri Grandis, cutting the rest part into blocks, ultrasonic washing, drying, and grinding into powder to obtain pericarpium Citri Grandis powder; 2) adding the shaddock peel powder into an alkali solution, uniformly stirring, carrying out suction filtration, taking a filtrate, adjusting the pH value to be neutral, adding ethanol, and carrying out overnight precipitation; 3) centrifuging, washing and drying the precipitate to obtain hemicellulose; 4) performing high-temperature pre-carbonization on hemicellulose to obtain a carbon precursor; 5) and adding the carbon precursor into an alkaline solution, and then performing high-temperature activation to obtain the coralline activated carbon material. Compared with the prior art, the activated carbon material prepared by the method is mostly coral-shaped, is densely and uniformly distributed, and has a large specific surface area. When the material is used as an electrode material of a super capacitor, the material shows excellent electrochemical characteristics and is one of ideal electrode materials.
Description
Technical Field
The invention belongs to the technical field of activated carbon materials, and relates to a coralline activated carbon material and a preparation method thereof.
Background
As is well known, super capacitors are a very interesting energy storage device, and have the characteristics of long life, high power density, good chemical stability, low maintenance cost, etc. Among them, the electrode material is an important determinant of the performance of the supercapacitor. The porous carbon material has the characteristics of high surface area, good conductivity, wide sources, diversified preparation methods and the like, and is widely applied to the super capacitor as an electrode material. The selection of a proper preparation method and a proper carbon source has important significance for regulating the structural size of the carbon material and reducing the cost. However, the conventional carbon material precursor is expensive, and the chemical synthesis method has a serious impact on the environment, which greatly hinders the practical application of the carbon-based material in the aspect of the supercapacitor. Therefore, inexpensive, environment-friendly and advanced electrode materials have become hot research spots in the field of renewable energy.
In recent years, biomass carbon materials have been receiving much attention from researchers due to their good electrical conductivity and low cost. The biomass carbon material is used as a renewable energy source for preparing the porous carbon material, so that the manufacturing cost can be reduced, the waste is reduced, and the recovery of products and environmental protection are facilitated.
However, the existing biomass carbon material has few varieties and complex preparation process, which limits further application.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a coralline activated carbon material and a preparation method thereof.
The purpose of the invention can be realized by the following technical scheme:
a method for producing a coralline activated carbon material, comprising the steps of:
1) removing yellow outer skin of pericarpium Citri Grandis, cutting the rest part into blocks, ultrasonic washing, drying, and grinding into powder to obtain pericarpium Citri Grandis powder;
2) adding the shaddock peel powder into an alkali solution, uniformly stirring, carrying out suction filtration, taking a filtrate, adjusting the pH value to be neutral, adding ethanol, and carrying out overnight precipitation;
3) centrifuging, washing and drying the precipitate to obtain hemicellulose;
4) performing high-temperature pre-carbonization on hemicellulose to obtain a carbon precursor;
5) and adding the carbon precursor into an alkaline solution, and then performing high-temperature activation to obtain the coralline activated carbon material.
Further, in step 1), the ultrasonic washing process is as follows: ultrasonic treating with water for 10-25min, and washing with water. The yellow outer skin of the shaddock peel is removed firstly, and only a white part is left, so that the components of the carbon precursor are consistent.
Further, in the step 1), the temperature is 60-180 ℃ and the time is 12-48h in the drying process.
Further, in the step 1), the particle size of the shaddock peel powder is 50-200 meshes.
Further, in the step 2), the alkali solution is a KOH solution with the concentration of 5-15 wt%, the volume ratio of the KOH solution to the ethanol is 1 (1-3), and 0.8-1.2g of shaddock peel powder is added to each 100mL of the KOH solution.
Further, in the step 2), the temperature is 30-80 ℃ and the time is 8-24h in the stirring process.
Further, in the step 3), the temperature is 60-180 ℃ and the time is 12-48h in the drying process.
Further, in the step 4), the temperature is 500-700 ℃ and the time is 1-3h in the high-temperature pre-carbonization process. The high-temperature pre-carbonization process is beneficial to improving the yield of the activated product in the next step.
Further, in the step 5), the temperature is 600-1000 ℃ and the time is 1-3h in the high-temperature activation process. The alkali solution is a KOH solution with the concentration of 5-40 wt%, and the mass ratio of the carbon precursor to the KOH in the KOH solution is 1 (1-3). High-temperature activation is carried out in an alkaline solution in order to change the pore structure of the carbon material by activation.
A coralline activated carbon material is prepared by the method.
Compared with the prior art, the method comprises the steps of firstly extracting hemicellulose from shaddock peel by a precipitation method, then carrying out high-temperature pre-carbonization on the hemicellulose to obtain a carbon precursor, then adding the carbon precursor into a potassium hydroxide solution for mixing and dipping, and then carrying out high-temperature activation to obtain the activated carbon material. The obtained activated carbon material is mostly coral-shaped, is densely and uniformly distributed and has large specific surface area. When the material is used as an electrode material of a super capacitor, the material shows excellent electrochemical characteristics and is one of ideal electrode materials.
Drawings
FIG. 1 is a scanning electron micrograph of a coralline activated carbon material obtained in example 1;
FIG. 2 is a scanning electron micrograph of a coralline activated carbon material obtained in example 2;
FIG. 3 is a scanning electron micrograph of the coralline activated carbon material obtained in example 3.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments. The present embodiment is implemented on the premise of the technical solution of the present invention, and a detailed implementation manner and a specific operation process are given, but the scope of the present invention is not limited to the following embodiments.
Example 1:
1) removing yellow peel of pericarpium Citri Grandis, cutting the rest into small pieces, ultrasonic treating with deionized water for 25min, washing with deionized water, drying at 100 deg.C for 12 hr, and grinding into powder;
2) adding 1g of shaddock peel powder into 6 wt% KOH solution, stirring for 12h at 30 ℃, filtering to obtain filtrate, adjusting the pH value to be neutral, adding 200mL of ethanol, and performing overnight precipitation;
3) centrifuging and washing the precipitate, and drying at 120 ℃ for 12h to obtain hemicellulose;
4) placing 1g of hemicellulose in a tubular furnace, and pre-carbonizing at a high temperature of 500 ℃ for 2h to obtain a carbon precursor;
5) adding 1g of carbon precursor and 2g of potassium hydroxide into 5mL of deionized water, and then placing the mixture into a tubular furnace to activate the mixture for 2h at the high temperature of 700 ℃ to obtain the coralline activated carbon material. Filtering and washing with deionized water, and drying in an oven.
The scanning electron microscope of the coralline activated carbon material prepared in this example is shown in fig. 1, and it can be seen that most of the material has a coralline structure, is densely distributed and has a large specific surface area (the specific surface area is 1293 m)2g-1) (ii) a When prepared into a super capacitor electrode, the electrochemical performance is excellent (when the current density is 0.5A g-1When the specific capacitance reaches 267F g-1)。
Example 2:
1) removing yellow peel of pericarpium Citri Grandis, cutting the rest into small pieces, ultrasonic treating with deionized water for 25min, washing with deionized water, drying at 120 deg.C for 12 hr, and grinding into powder;
2) adding 1g of shaddock peel powder into 8 wt% KOH solution, stirring for 16h at 50 ℃, filtering the obtained filtrate to adjust the pH to be neutral, adding 200mL of ethanol, and carrying out overnight precipitation;
3) centrifuging and washing the precipitate, and drying at 140 ℃ for 24h to obtain hemicellulose;
4) placing 1g of hemicellulose in a tubular furnace, and pre-carbonizing at a high temperature of 500 ℃ for 2h to obtain a precursor;
5) adding 1g of carbon precursor and 2g of potassium hydroxide into 5mL of deionized water, and then placing the mixture into a tubular furnace to activate the mixture for 2h at the high temperature of 700 ℃ to obtain the coralline activated carbon material. Filtering and washing with deionized water, and drying in an oven.
The scanning electron microscope of the coralline activated carbon material prepared in this example is shown in fig. 2, and it can be seen that most of the material has a coralline structure, is densely distributed and has a large specific surface area (the specific surface area is 1106 m)2g-1) (ii) a When prepared into a super capacitor electrode, the electrochemical performance is excellent (when the current density is 0.5A g-1When the specific capacitance reaches 239F g-1)。
Example 3:
1) removing yellow peel of pericarpium Citri Grandis, cutting the rest into small pieces, ultrasonic treating with deionized water for 20min, washing with deionized water, drying at 160 deg.C for 24 hr, and grinding into powder;
2) adding 1g of shaddock peel powder into 10 wt% KOH solution, stirring for 20h at 70 ℃, filtering to obtain filtrate, adjusting the pH value to be neutral, adding 200mL of ethanol, and performing overnight precipitation;
3) centrifuging and washing the precipitate, and drying at 160 ℃ for 12h to obtain hemicellulose;
4) placing 1g of hemicellulose in a tubular furnace, and pre-carbonizing at 600 ℃ for 3h to obtain a precursor;
5) adding 1g of carbon precursor and 2g of potassium hydroxide into 5mL of deionized water, and then placing the mixture into a tubular furnace to activate the mixture for 3h at 800 ℃ to obtain the coralline activated carbon material. Filtering and washing with deionized water, and drying in an oven.
The scanning electron microscope of the coralline activated carbon material prepared in this example is shown in fig. 3, and it can be seen that most of the material has a coralline structure, is densely distributed, and has a large specific surface area (the specific surface area is 941 m)2g-1) (ii) a When prepared into a super capacitor electrode, the electrochemical performance is excellent (when the current density is 0.5A g-1When the specific capacitance reaches 210F g-1)。
Example 4:
1) removing yellow peel of pericarpium Citri Grandis, cutting the rest into small pieces, ultrasonic treating with deionized water for 15min, washing with deionized water, drying at 180 deg.C for 36 hr, and grinding into powder;
2) adding 1g of shaddock peel powder into 10 wt% KOH solution, stirring for 24h at 80 ℃, filtering to obtain filtrate, adjusting the pH value to be neutral, adding 200mL of ethanol, and carrying out overnight precipitation;
3) centrifuging and washing the precipitate, and drying at 180 ℃ for 36h to obtain hemicellulose;
4) placing 1g of hemicellulose in a tube furnace, and pre-carbonizing at 700 ℃ for 2h to obtain a precursor;
5) adding 1g of carbon precursor and 2g of potassium hydroxide into 5mL of deionized water, and then placing the mixture into a tubular furnace to activate the mixture for 3h at the high temperature of 900 ℃ to obtain the coralline activated carbon material. Filtering and washing with deionized water, and drying in an oven.
Most of the coral-shaped activated carbon materials prepared in this example exhibited a coral-shaped structure, were densely distributed, and had a large specific surface area (specific surface area of 1053 m)2g-1) (ii) a When prepared into a super capacitor electrode, the electrochemical performance is excellent (when the current density is 0.5A g-1When the specific capacitance reaches 242F g-1)。
Example 5:
a coral-shaped activated carbon material is prepared by the following steps:
1) removing yellow outer skin of pericarpium Citri Grandis, cutting the rest into blocks, ultrasonic treating with water for 10min, washing with water, drying at 180 deg.C for 12 hr, and grinding into powder with particle size of 200 mesh;
2) adding the shaddock peel powder into a KOH solution with the concentration of 5 wt%, adding 0.8g of the shaddock peel powder into each 100mL of the KOH solution, stirring for 8h at 80 ℃, then carrying out suction filtration, taking the filtrate, adjusting the pH value to be neutral, then adding ethanol, and carrying out overnight precipitation, wherein the volume ratio of the KOH solution to the ethanol is 1: 3;
3) centrifuging, washing and drying the precipitate at 180 ℃ for 12h to obtain hemicellulose;
4) performing high-temperature pre-carbonization on hemicellulose at the temperature of 700 ℃ for 1h to obtain a carbon precursor;
5) adding the carbon precursor into a KOH solution, and then carrying out high-temperature activation at 1000 ℃ for 1h to obtain the coralline activated carbon material.
Example 6:
a coral-shaped activated carbon material is prepared by the following steps:
1) removing yellow outer skin of pericarpium Citri Grandis, cutting the rest into blocks, ultrasonic treating with water for 25min, washing with water, drying at 60 deg.C for 48 hr, and grinding into powder with particle size of 50 mesh;
2) adding the shaddock peel powder into a KOH solution with the concentration of 15 wt%, adding 1.2g of the shaddock peel powder into each 100mL of the KOH solution, stirring for 24h at 30 ℃, then carrying out suction filtration, taking the filtrate, adjusting the pH value to be neutral, then adding ethanol, and carrying out overnight precipitation, wherein the volume ratio of the KOH solution to the ethanol is 1: 1;
3) centrifuging, washing and drying the precipitate at the temperature of 60 ℃ for 48 hours to obtain hemicellulose;
4) performing high-temperature pre-carbonization on hemicellulose at the temperature of 500 ℃ for 3 hours to obtain a carbon precursor;
5) adding the carbon precursor into a KOH solution, and then carrying out high-temperature activation at the temperature of 600 ℃ for 3 hours to obtain the coralline activated carbon material.
Example 7:
a coral-shaped activated carbon material is prepared by the following steps:
1) removing yellow outer skin of pericarpium Citri Grandis, cutting the rest into blocks, ultrasonic treating with water for 18min, washing with water, drying at 100 deg.C for 24 hr, and grinding into powder with particle size of 120 mesh;
2) adding the shaddock peel powder into a KOH solution with the concentration of 10 wt%, adding 1g of the shaddock peel powder into each 100mL of the KOH solution, stirring for 15h at 50 ℃, then carrying out suction filtration, taking the filtrate, adjusting the pH value to be neutral, then adding ethanol, and carrying out overnight precipitation, wherein the volume ratio of the KOH solution to the ethanol is 1: 2;
3) centrifuging, washing and drying the precipitate at 120 ℃ for 24 hours to obtain hemicellulose;
4) performing high-temperature pre-carbonization on hemicellulose at the temperature of 600 ℃ for 2 hours to obtain a carbon precursor;
5) adding the carbon precursor into a KOH solution, and then carrying out high-temperature activation at 800 ℃ for 2h to obtain the coralline activated carbon material.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. A method for producing a coralline activated carbon material, characterized by comprising the steps of:
1) removing peel of pericarpium Citri Grandis, cutting the rest part into blocks, ultrasonic washing, drying, and grinding into powder to obtain pericarpium Citri Grandis powder;
2) adding the shaddock peel powder into an alkali solution, uniformly stirring, carrying out suction filtration, taking a filtrate, adjusting the pH value to be neutral, adding ethanol, and carrying out overnight precipitation;
3) centrifuging, washing and drying the precipitate to obtain hemicellulose;
4) performing high-temperature pre-carbonization on hemicellulose to obtain a carbon precursor;
5) and adding the carbon precursor into an alkaline solution, and then performing high-temperature activation to obtain the coralline activated carbon material.
2. The method for preparing a coralline activated carbon material as claimed in claim 1, wherein in step 1), the ultrasonic washing process is: ultrasonic treating with water for 10-25min, and washing with water.
3. The method for producing a coralline activated carbon material as claimed in claim 1, wherein in the step 1), the temperature is 60 to 180 ℃ and the time is 12 to 48 hours during the drying.
4. The method for producing a coralline activated carbon material as claimed in claim 1, wherein in step 1), the particle size of the shaddock peel powder is 50 to 200 mesh.
5. The method for preparing a coralline activated carbon material as claimed in claim 1, wherein in the step 2), the alkali solution is a KOH solution having a concentration of 5 to 15% by weight, the volume ratio of the KOH solution to ethanol is 1 (1 to 3), and 0.8 to 1.2g of the grapefruit peel powder is added to 100mL of the KOH solution.
6. The method for producing a coralline activated carbon material as claimed in claim 1, wherein in the step 2), the temperature is 30 to 80 ℃ and the time is 8 to 24 hours during the stirring.
7. The method for producing a coralline activated carbon material as claimed in claim 1, wherein in the step 3), the temperature is 60 to 180 ℃ and the time is 12 to 48 hours during the drying.
8. The method for preparing a coralline activated carbon material as claimed in claim 1, wherein the temperature in the step 4) is 500-700 ℃ and the time is 1-3 h.
9. The method for preparing a coralline activated carbon material as claimed in claim 1, wherein the temperature in the step 5) is 600-1000 ℃ and the time is 1-3 h.
10. A coral-shaped activated carbon material produced by the method according to any one of claims 1 to 9.
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| CN114477175A (en) * | 2022-01-25 | 2022-05-13 | 南京智汇环境气象产业研究院有限公司 | Simple preparation method of carbon material by taking shaddock inner pulp as raw material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114477175A (en) * | 2022-01-25 | 2022-05-13 | 南京智汇环境气象产业研究院有限公司 | Simple preparation method of carbon material by taking shaddock inner pulp as raw material |
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