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Simple preparation method of biological nitrogen-doped carbon-based porous electrocatalyst

A nitrogen-doped carbon, electrocatalyst technology, applied in electrodes, electrolysis processes, electrolysis components, etc., can solve the problems of high price and scarce resources, and achieve the effects of simple operation, high spatial structure, and reduced preparation costs.

Inactive Publication Date: 2018-10-16
ZHEJIANG SCI-TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among many new energy sources, hydrogen energy has attracted much attention as an efficient and clean energy source. The hydrogen evolution reaction of electrolyzed water is one of the efficient ways to produce hydrogen. Widely used

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] 1): Remove the pulp and outer skin of pomelo to obtain fresh pomelo skin, and cut it into 2*3cm blocks; control the temperature to boil at 80°C to remove soluble substances;

[0018] 2): Put the pomelo peel obtained by filtering and washing in step 1 into a reaction kettle, control the water temperature at 140°C for hydrothermal reaction for 15 hours, and obtain a black pomelo peel hydrogel;

[0019] 3): Gel filtration obtained in step 2, washed with deionized water, and freeze-dried to obtain a precursor;

[0020] 4): Potassium hydroxide is mixed with the pomelo peel powder obtained in step 3 at a ratio of 3:1, ground, and the mixed sample is placed in a corundum crucible, and calcined in a tube furnace for 1 h under an argon atmosphere. The temperature of the tube furnace is controlled at 500°C, and the heating rate is 1°C / min; after cooling, the calcined sample is ground again, and washed with deionized water until the pH value is 7; the washed product is filtered, a...

Embodiment 2

[0024] 1): Remove the pulp and outer skin of pomelo to obtain fresh pomelo skin, and cut it into 2*3cm blocks; control the temperature to boil at 90°C to remove soluble substances;

[0025] 2): Put the pomelo peel obtained by filtering and washing in step 1 into a reaction kettle, control the water temperature at 180°C for hydrothermal reaction for 18 hours, and obtain a black pomelo peel hydrogel;

[0026] 3): Gel filtration obtained in step 2, washed with deionized water, and freeze-dried to obtain a precursor;

[0027] 4): Potassium hydroxide is mixed with the pomelo peel powder obtained in step 3 at a ratio of 3:1, ground, and the mixed sample is placed in a corundum crucible, and calcined in a tube furnace for 1 h under an argon atmosphere. The temperature of the tube furnace is controlled at 600°C, and the heating rate is 3°C / min; after cooling, the calcined sample is ground again, and washed with deionized water until the pH value is 7; the washed product is filtered, a...

Embodiment 3

[0031] 1): Remove the pulp and outer skin of grapefruit to obtain fresh grapefruit skin, and cut it into 2*3cm blocks; control the temperature to boil at 100°C to remove soluble substances;

[0032] 2): Put the pomelo peel obtained by filtering and washing in step 1 into a reaction kettle, control the water temperature at 220°C for hydrothermal reaction for 20 hours, and obtain a black pomelo peel hydrogel;

[0033] 3): Gel filtration obtained in step 2, washed with deionized water, and freeze-dried to obtain a precursor;

[0034] 4): Potassium hydroxide and the pomelo peel powder obtained in step 3 were mixed in a ratio of 3:1, ground, and the mixed sample was placed in a corundum crucible, and calcined in a tube furnace for 2 hours under an argon atmosphere. The temperature of the tube furnace is controlled at 700°C, and the heating rate is 5°C / min; after cooling, the calcined sample is ground again, and washed with deionized water until the pH value is 7; the washed product...

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Abstract

The invention discloses a simple preparation method of a biological nitrogen-doped carbon-based porous electrocatalyst, and belongs to the field of electrocatalysis materials. After shaddock peel andpumpkin seeds are prepared into powder, the powder is mixed and stirred, the mixture is calcined in the inert gas atmosphere, and a nitrogen-containing porous biological carbon material is prepared. The simple preparation method has the beneficial effects that the cheap and reproducible shaddock peel is selected as the raw material for preparation of the catalyst, environmental pollution probablycaused by the shaddock peel is relieved, and the preparation cost of the electrocatalyst is further effectively reduced. The pumpkin seeds are cheap biological materials rich in protein, and the dopednitrogen and metal elements greatly help to improve the hydrogen evolution capacity of biological carbon. A hydrothermal carbonization method is used in the preparation process, and the beneficial effects that the space structures of the materials can be effectively reserved, high productivity is further achieved, and operation is easy and convenient are achieved.

Description

technical field [0001] The invention relates to the field of electrocatalytic materials, in particular to a simple method for preparing biological nitrogen-doped carbon-based porous electrocatalysts. Background technique [0002] The depletion of fossil fuels and the severe ecological environment have stimulated the research and development of clean and sustainable energy devices. Among many new energy sources, hydrogen energy has attracted much attention as an efficient and clean energy source. The hydrogen evolution reaction of electrolyzed water is one of the efficient ways to produce hydrogen. widely used. [0003] Therefore, the development of low-cost, high-performance non-noble metal catalysts for electrocatalytic hydrogen evolution catalysts is an important research direction in this field. Contents of the invention [0004] In order to solve the above-mentioned technical problems, the present invention provides a simple preparation method of biological nitrogen-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B11/06C25B1/04
CPCC25B1/04C25B11/04Y02E60/36
Inventor 胡智文蒙均晶万军民彭志勤王秉
Owner ZHEJIANG SCI-TECH UNIV
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