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Nitrogen functional carbon material loaded with transition metal chalcogenide as well as preparation and application of nitrogen functional carbon material

A technology of transition metal chalcogenides and chalcogenides, applied in chemical instruments and methods, physical/chemical process catalysts, electrolysis processes, etc., can solve the problems of hydrogen production efficiency gap and achieve high efficiency and excellent catalytic performance

Inactive Publication Date: 2016-11-16
NORTHWEST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still a certain gap in the hydrogen production efficiency of this type of catalyst compared with metal platinum as a catalyst.

Method used

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  • Nitrogen functional carbon material loaded with transition metal chalcogenide as well as preparation and application of nitrogen functional carbon material
  • Nitrogen functional carbon material loaded with transition metal chalcogenide as well as preparation and application of nitrogen functional carbon material
  • Nitrogen functional carbon material loaded with transition metal chalcogenide as well as preparation and application of nitrogen functional carbon material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1. Nitrogen-functionalized carbon material MoS 2 @NCNH-800 2 preparation of

[0030] (1) Preparation of nitrogen-doped zeolite imidazolate framework material: disperse 4g of 2-methylimidazole in 46mL of ammonia solution as solution A; disperse 4g of zinc acetate dihydrate in 26mL of deionized water as solution B, After mixing the above two solutions, stir at room temperature for 3 hours, collect the product by filtration, wash the product with deionized water until neutral, soak it in chloroform overnight, collect it by centrifugation, and dry it in vacuum at 100°C overnight to obtain nitrogen-doped zeolite imidazole Ester skeleton structure material.

[0031](2) Preparation of nitrogen-functionalized carbon material: Weigh 4g of zinc chloride and dissolve it completely in 25mL of ethanol, then disperse the nitrogen-doped zeolite imidazolate framework material prepared above in it, and stir in an oil bath at 80°C Until evaporated to dryness, under the protect...

Embodiment 2

[0034] Example 2. Nitrogen-functionalized carbon material CoSe 2 @NCNH-800 2 preparation of

[0035] (1) Preparation of nitrogen-doped zeolite imidazolate framework material: same as Example 1;

[0036] (2) Preparation of nitrogen functionalized carbon material: same as Example 1;

[0037] (3) Nitrogen-functionalized carbon material CoSe 2 @NCNH-800 2 Preparation of nitrogen-functionalized carbon material: Disperse 170 mg of nitrogen-functionalized carbon material in 180 mL of absolute ethanol, and stir for 10 to 60 minutes to obtain a suspension; add 51 mg of cobalt chloride, 88 mg of selenium dioxide, and 2.1 g of sodium acetate to the above suspension, Stir for 12-24 hours under gas protection; ultrasonically disperse sodium borohydride in absolute ethanol, add sodium borohydride ethanol solution dropwise to the above solution, stir for 1-24 hours, collect the product by centrifugation, and wash with absolute ethanol Multiple times, dry at 60°C for 24~64 hours. Grind ...

Embodiment 3

[0039] Example 3. Nitrogen functionalized carbon material CoS 2 @NCNH-800 2 preparation of

[0040] (1) Preparation of nitrogen-doped zeolite imidazolate framework material: same as Example 1;

[0041] (2) Preparation of nitrogen functionalized carbon material: same as Example 1;

[0042] (3) Nitrogen-functionalized carbon material CoS 2 @NCNH-800 2 Preparation: Disperse 700mg of cobalt chloride and 1.5g of thiourea in 80mL of deionized water to obtain a clear solution, then disperse 50mg of nitrogen-functionalized carbon material in the above solution, and ultrasonicate for 1h; then place it in an autoclave, Hydrothermal reaction at 220°C for 24 hours, naturally cooled to room temperature, washed with deionized water several times, dried to obtain a black powder, and ground to obtain a catalyst, which is recorded as CoS 2 @NCNH-800 2 .

[0043] (4) CoS 2 @NCNH-800 2 Catalytic efficiency and effect: test method and condition are with embodiment 1. Test results: The c...

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Abstract

The invention discloses a nitrogen functional carbon material loaded with transition metal chalcogenide. A nitrogen doped zeolitic imidazolate framework structure carbon material is used as a carrier, through nitrogen functionalization, and then a hydrothermal reaction is performed with a precursor of the transition metal chalcogenide, so that the nitrogen functional carbon material loaded with transition metal chalcogenide is obtained. The material has excellent catalytic activity in an electrocatalysis water reduction hydrogen evolution reaction, and has a high efficiency in electrocatalysis water reduction hydrogen production.

Description

technical field [0001] The invention relates to a nitrogen-functionalized carbon material loaded with a transition metal chalcogenide and a preparation method thereof; the invention also relates to the application of the nitrogen-functionalized carbon material as a catalyst in electrocatalytic water reduction hydrogen production. Background technique [0002] In recent years, with the increasing human population and the development of global transportation, the form of energy has become severe, and the massive exploitation of traditional fossil fuels such as oil, coal, and natural gas has led to a sharp decline in the storage of fossil fuels. At the same time, during the use of these fossil fuel energy sources, a large amount of greenhouse gases such as carbon dioxide, methane, nitrous oxide, chlorofluorocarbons, carbon tetrachloride, and carbon monoxide are emitted into the atmospheric system, which is harmful to the earth's ecology on which human beings depend. The system ...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J27/051C25B1/04
CPCB01J27/051B01J27/24C25B1/04C25B11/075Y02E60/36
Inventor 童金辉李卿马青刘方方刘文君
Owner NORTHWEST NORMAL UNIVERSITY
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