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Method for preparing high-specific-surface-area porous graphitic nanocarbon plate with coconut shells serving as raw materials

A high specific surface area, porous graphite technology, applied in nanotechnology, nanocarbon, chemical instruments and methods for materials and surface science, etc. It is beneficial to the transmission of electrons, the equipment required for the reaction is simple, and the production safety is high.

Inactive Publication Date: 2013-04-03
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of high production cost, complex process, poor safety, low yield, and difficulty in realizing industrialization in the existing method for preparing graphitized nano-carbon materials, and the obtained graphitized nano-carbon materials have low specific surface area and low degree of graphitization. poor problem, and provide a method for preparing porous graphitized nano-carbon sheets with high specific surface area using coconut shell as raw material

Method used

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  • Method for preparing high-specific-surface-area porous graphitic nanocarbon plate with coconut shells serving as raw materials
  • Method for preparing high-specific-surface-area porous graphitic nanocarbon plate with coconut shells serving as raw materials
  • Method for preparing high-specific-surface-area porous graphitic nanocarbon plate with coconut shells serving as raw materials

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specific Embodiment approach 1

[0024] Specific embodiment one: present embodiment is a kind of method for raw material preparation high specific surface area porous graphitized nano-carbon sheet with coconut shell, specifically operates according to the following steps: one, adopt acid treatment method or alkali treatment method to coconut shell Carry out pretreatment; 2. Add catalyst, activator and the coconut shell pretreated in step 1 to the solvent, and stir for 6~8h at a temperature of 50~80°C and a stirring speed of 100~350r / min to obtain a complex; Wherein, the mass ratio of coconut shell and catalyst is 1~5:1, and the mass ratio of coconut shell and activator is 1~5:1; Three, under the condition that temperature is 50 ℃~200 ℃, the The complex is solidified for 6~8h to obtain the product; 4. The temperature is raised to 700℃~1100℃ at a rate of 1~15℃ / min, and then the product of step 3 is heat-treated at 700℃~1100℃ for 10min~5h to obtain product; wherein the flow rate of the heat treatment atmosphere ...

specific Embodiment approach 2

[0031] Specific embodiment two: the difference between this embodiment and specific embodiment one is: the acid treatment method described in step 1 carries out the concrete operation steps of pretreatment to coconut shell as follows: add coconut shell to mass concentration and be 10%~15 % nitric acid solution, reflux at 70~150°C for 4~8h to complete the acid treatment, wherein the mass volume ratio of coconut shell to nitric acid solution is 5g:50mL. Others are different from the first embodiment.

specific Embodiment approach 3

[0032] Specific embodiment three: the difference between this embodiment and specific embodiment one or two is that: the alkali treatment method described in step 1 carries out the specific operation steps of pretreatment to coconut shell as follows: adding coconut shell to mass concentration is 10%~ Ultrasonic stirring in 20% KOH solution for 3~7h, then hydrothermal reaction at 100°C~200°C for 2~5h, washing with distilled water until the pH of the lotion is 7.0, and drying at 80°C~100°C for 6~ 8h, the alkali treatment is completed, wherein the mass volume ratio of coconut shell and KOH solution is 5g:50mL. Others are different from the first or second specific embodiment.

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Abstract

The invention provides a method for preparing a high-specific-surface-area porous graphitic nanocarbon plate with coconut shells serving as raw materials, and relates to a preparation method of a graphitic nanocarbon material, and the method is used for solving the problems of conventional preparation method of the graphitic nanocarbon material that the production cost is high, the process is complex, the safety is poor, the output is low, the industrialization is hard to realize, and the prepared graphitic nanocarbon material is low in specific surface area and poor in graphitic degree. The preparation method comprises the following steps: 1, preprocessing the raw materials; 2, coordinating the raw materials with catalysts and activating agents; 3, curing the coordination compound; 4, thermally treating under an inert gas condition; and 5, carrying out acid leaching, washing by distilled water, and drying, so as to obtain the high-specific-surface-area porous graphitic nanocarbon plate. The porous graphitic nanocarbon plate prepared by the method provided by the invention is high in specific surface area, high in graphitic degree and excellent in electrochemical performance; the method is simple, low in energy consumption, high in safety, and suitable for industrial production; and a scientific way is provided for realizing the resource utilization of biological wastes like the coconut shells.

Description

technical field [0001] The invention relates to a method for porous graphitizing nano-carbon sheets. Background technique [0002] As a new generation of functional materials, graphitized carbon materials are widely used in adsorption, lithium-ion batteries, supercapacitors, biochemical sensors, biomedicine, and fuel cells due to their excellent chemical stability, high conductivity, and oxidation resistance at low temperatures. field has important application value. [0003] As we all know, two important factors that affect the performance of carbon materials are the degree of graphitization and high specific surface area. By adjusting the specific surface area and degree of graphitization of carbon materials, carbon materials can be endowed with different comprehensive properties and meet different use requirements. Therefore In recent years, many scientists have devoted themselves to studying the preparation methods of porous graphitized nanocarbons with high specific su...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B31/02B82Y30/00C01B32/15C01B32/205
Inventor 付宏刚孙立田春贵孟祥影历美彤王瑞红王蕾尹婕田国辉
Owner HEILONGJIANG UNIV
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