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Pt/C-N composite electrocatalytic material with efficient hydrogen evolution performance and preparation method thereof

An electrocatalytic material, C-N technology, applied in catalyst activation/preparation, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of low catalytic activity of catalysts, difficult to achieve large-scale utilization, and high preparation costs, and achieve high efficiency. The effect of hydrogen evolution performance, low cost and simple operation

Inactive Publication Date: 2020-04-07
CHINA UNIV OF GEOSCIENCES (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a Pt / C-N composite electrocatalytic material with high-efficiency hydrogen evolution performance and its preparation method to solve the problems of low catalytic activity, high preparation cost and difficulty in large-scale utilization of existing catalysts

Method used

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  • Pt/C-N composite electrocatalytic material with efficient hydrogen evolution performance and preparation method thereof
  • Pt/C-N composite electrocatalytic material with efficient hydrogen evolution performance and preparation method thereof
  • Pt/C-N composite electrocatalytic material with efficient hydrogen evolution performance and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] raw material:

[0026] Biochar material (white radish) is a commercially available raw material

[0027] Chloroplatinic acid hexahydrate is the raw material of Aladdin's official website

[0028] Cut the white radish into slices of 1*1*2cm, and soak it in 0.08mol / L chloroplatinic acid precursor solution for 6 hours.

[0029] After impregnation, the sample was freeze-dried at a freezing temperature of -60°C, a vacuum of 1 Pa, a freezing time of 1 day, and a drying time of 2 days to obtain a biochar precursor capable of maintaining the cell structure of the biochar material.

[0030] The biochar precursor was carbonized at a carbonization temperature of 600 °C, the heating rate was 2 °C / min, the holding time was 2 hours, and the protective atmosphere was Ar gas to obtain a Pt / C-N composite electrocatalytic material.

[0031] Using the bioporous carbon material loaded with Pt metal nanoparticles as the catalyst, its electrochemical hydrogen evolution performance was test...

Embodiment 2

[0033] raw material:

[0034] Biochar material (white radish) is a commercially available raw material

[0035] Chloroplatinic acid hexahydrate is the raw material of Aladdin's official website

[0036] Cut the white radish into slices of 1*1*2cm, and soak it in 0.04mol / L chloroplatinic acid precursor solution for 6 hours.

[0037] After impregnation, the sample was freeze-dried at a freezing temperature of -60°C, a vacuum of 1 Pa, a freezing time of 1 day, and a drying time of 2 days to obtain a biochar precursor capable of maintaining the cell structure of the biochar material.

[0038] The biochar precursor was carbonized at a carbonization temperature of 600 °C, the heating rate was 2 °C / min, the holding time was 2 hours, and the protective atmosphere was Ar gas to obtain a Pt / C-N composite electrocatalytic material.

Embodiment 3

[0040] raw material:

[0041] Biochar material (white radish) is a commercially available raw material

[0042] Chloroplatinic acid hexahydrate is the raw material of Aladdin's official website

[0043] Cut the white radish into slices of 1*1*2cm, and soak it in 0.12mol / L chloroplatinic acid precursor solution for 6 hours.

[0044] After impregnation, the sample was freeze-dried at a freezing temperature of -60°C, a vacuum of 1 Pa, a freezing time of 1 day, and a drying time of 2 days to obtain a biochar precursor capable of maintaining the cell structure of the biochar material.

[0045] The biochar precursor was carbonized at a carbonization temperature of 600 °C, the heating rate was 2 °C / min, the holding time was 2 hours, and the protective atmosphere was Ar gas to obtain a Pt / C-N composite electrocatalytic material.

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Abstract

Belonging to the technical field of energy catalytic conversion, the invention relates to a Pt / C-N composite electrocatalytic material with efficient hydrogen evolution performance and a preparation method thereof. The Pt / C-N composite electrocatalytic material is formed by anchoring Pt metal nanoparticles on the surface of a nitrogen-doped biomass carbon material in situ, the particle size of Ptmetal nanoparticles in the Pt / C-N composite electrocatalytic material is about 1nm-10nm, an exposed crystal face is a {111} active crystal face, and the loading capacity is 3-25wt%. In the Pt / C-N composite electrocatalytic material provided by the invention, N atoms are doped in situ in the biomass carbon material, Pt metal nanoparticles are uniformly loaded on the biomass carbon material, the loading capacity controllable, crystal grain size is adjustable, the Pt metal nanoparticles have excellent electrocatalytic hydrogen evolution activity, and the biomass carbon material and the Pt metal nanoparticles are tightly combined, the stability of the electrocatalytic material in catalytic reaction is substantially improved, and the Pt / C-N composite electrocatalytic material has wide application prospects in the fields of electro-catalysis, electrochemistry, energy, environment, chemical industry and the like.

Description

technical field [0001] The invention relates to a Pt / C-N composite electrocatalytic material with high-efficiency hydrogen evolution performance and a preparation method thereof, belonging to the technical field of energy catalytic conversion. Background technique [0002] Since the 21st century, it is very urgent for people to develop clean new energy, improve energy utilization efficiency and control environmental pollution to solve the severe challenges of energy and environment. Chemical reaction control is the core science and technology of energy conversion, petrochemical industry and solving environmental problems. The "cornerstone" of high efficiency in the fields of chemical industry and even environmental protection, innovative research on high-efficiency composite catalysts will have an extremely important impact on alleviating energy and environmental problems. [0003] Platinum (Pt) is a small noble metal molecule with unique activation properties. Because the ...

Claims

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Application Information

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IPC IPC(8): B01J27/24B01J35/00B01J37/02B01J37/08B01J37/32C25B1/04C25B11/06
CPCB01J37/0201B01J37/32B01J37/084B01J37/082B01J27/24C25B1/04C25B11/093B01J35/393B01J35/33Y02E60/36
Inventor 赵雅静闵鑫房明浩陈爽闵祎鋆吴小文刘艳改黄朝晖
Owner CHINA UNIV OF GEOSCIENCES (BEIJING)
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