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Carbon-based electrocatalyst and preparation method thereof

An electrocatalyst and electrocatalytic oxidation technology, which is applied in the field of electrocatalysis, can solve problems such as difficult to meet actual needs, poor electrocatalytic effect, and small specific surface area, and achieve performance improvement, large specific surface area, and increased specific surface area.

Active Publication Date: 2020-12-29
GUANGZHOU UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the unique composition and structure of plant shells, they often show relatively hard physical properties and small specific surface area. The specific surface area of ​​carbon materials or electrocatalysts obtained by direct carbonization by traditional technical means is also small. The effect is poor, it is difficult to meet the actual needs, and the application is greatly restricted

Method used

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  • Carbon-based electrocatalyst and preparation method thereof
  • Carbon-based electrocatalyst and preparation method thereof
  • Carbon-based electrocatalyst and preparation method thereof

Examples

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Effect test

Embodiment 1

[0047] A carbon-based electrocatalyst, its preparation method comprises the following steps:

[0048] 1) Wash the longan shell, put it in a drying oven and dry it at 100°C for 4 days, then put it into a high-speed pulverizer and pulverize it for 2 minutes, and pass through a 100-mesh sieve to obtain longan shell particles;

[0049] 2) 3 parts by mass of longan shell particles, 0.7 parts by mass of sodium chlorite, 0.4 parts by mass of cetyltrimethylammonium bromide and 40 parts by mass of distilled water were mixed and stirred for 5 minutes, and then added to the hydrothermal reaction kettle , heated up to 180°C for 12 hours, suction filtered, washed the filtered solid with water, dried in an oven at 100°C for 24 hours, added to a high-speed pulverizer for 2 minutes, and passed through a 100-mesh sieve to obtain hydrothermally activated longan shell particles;

[0050] 3) After mixing 12 parts by mass of hydrothermally activated longan shell particles, 2 parts by mass of potas...

Embodiment 2

[0053] A carbon-based electrocatalyst, its preparation method comprises the following steps:

[0054] 1) Wash the peanut shells, put them in a drying oven at 100°C and bake them for 6 days, then add them to a high-speed pulverizer and grind them for 5 minutes, pass through a 100-mesh sieve to obtain peanut shell particles;

[0055] 2) 5 parts by mass of peanut shell particles, 1 part by mass of sodium chlorite, 0.8 parts by mass of sodium lauroyl sarcosinate and 50 parts by mass of distilled water were mixed and stirred for 5 minutes, then added to a hydrothermal reaction kettle, and the temperature was raised to 200 React at ℃ for 16 hours, filter with suction, wash the filtered solid with water, put it in an oven and dry it at 100℃ for 24 hours, then add it to a high-speed pulverizer to grind for 2 minutes, pass through a 100-mesh sieve, and obtain hydrothermally activated peanut shell particles;

[0056] 3) After mixing 20 parts by mass of hydrothermally activated peanut sh...

Embodiment 3

[0059] A carbon-based electrocatalyst, its preparation method comprises the following steps:

[0060] 1) Wash the mangosteen shells, dry them in a drying oven at 100°C for 9 days, then put them into a high-speed pulverizer and pulverize them for 3 minutes, and pass through a 100-mesh sieve to obtain mangosteen shell particles;

[0061] 2) Mix and stir 10 parts by mass of mangosteen shell granules, 2 parts by mass of sodium chlorite, 2 parts by mass of polyvinylpyrrolidone and 80 parts by mass of distilled water for 5 minutes, then add to a hydrothermal reactor, and heat up to 160°C for 24 hours , suction filtration, washing the filtered solid with water, drying in an oven at 100°C for 24 hours, then putting it into a high-speed pulverizer to pulverize for 1 minute, and passing through a 100-mesh sieve to obtain hydrothermally activated mangosteen shell particles;

[0062] 3) 28 parts by mass of hydrothermally activated mangosteen shell particles, 4 parts by mass of potassium b...

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Abstract

The invention discloses a carbon-based electrocatalyst and a preparation method thereof. The preparation method of the carbon-based electrocatalyst comprises the following steps: 1) crushing plant shells to obtain plant shell particles; 2) mixing the plant shell particles, sodium chlorite, a surfactant and water, and performing hydrothermal reaction to obtain hydrothermal activated plant shell particles; 3) mixing the hydrothermal activated plant shell particles, potassium bicarbonate, basic cupric carbonate, calcium carbonate and a solvent, performing ball milling, carbonizing in a carbon dioxide atmosphere, and soaking in an acid solution to obtain a plant shell derived carbon material; and 4) soaking the plant shell derived carbon material in a metal salt solution, and carbonizing the plant shell derived carbon material in an atmosphere containing a heteroatom dopant. The carbon-based electrocatalyst is large in specific surface area and has pore structures of different layers, anddifferent types of electrocatalytic reactions can be matched through doping of different heteroatoms.

Description

technical field [0001] The invention relates to the technical field of electrocatalysis, in particular to a carbon-based electrocatalyst and a preparation method thereof. Background technique [0002] There are a large number of shellfish in nature, which can be divided into animal shellfish and plant shellfish. Animal shells have high calcium carbonate or chitin content and are generally used to produce calcium carbonate or chitosan. Vegetable shells contain a large amount of carbohydrates, a small amount of amino acids and other plant components, that is, a large amount of carbon, hydrogen, and oxygen elements, and a small amount of elements such as nitrogen, sulfur, and phosphorus. [0003] The shells of plant fruits and seeds are often not eaten and utilized by people. For the relatively hard fruit and seed shells, the existing treatment methods are generally landfill or incineration, and their potential application value has not been effectively developed, wasting res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/75B01J23/825B01J23/883B01J23/889B01J35/00B01J35/10B01J37/00B01J37/08B01J37/10C01B32/324C01B32/342C01B32/354C25B11/06
CPCB01J23/8892B01J23/75B01J23/883B01J23/825B01J37/0036B01J37/0018B01J37/10B01J37/084C01B32/342C01B32/324C01B32/354B01J35/33B01J35/615B01J35/647
Inventor 徐常威屈俊任潘国亮黄舒平吴凯燕李巧贤
Owner GUANGZHOU UNIVERSITY
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