Preparation method of nitrogen-doped mesoporous carbon loaded high-dispersion Ru nanoparticle catalyst and application thereof

A nitrogen-doped mesoporous carbon and nanoparticle technology, applied in electrolysis components, electrodes, electrolysis process, etc., can solve problems such as poor catalytic activity at high current, high production cost, and limit large-scale practical application, and achieve a higher atomic efficiency. Utilization rate, ensure effective utilization, and the effect of excellent catalytic hydrogen evolution performance

Pending Publication Date: 2021-12-31
OCEAN UNIV OF CHINA +1
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The currently reported electrolytic water hydrogen evolution catalysts generally have problems such as high production cost and poor high-current catalytic activity, which limit their large-scale practical application. To solve the above problems, the invention provides a nitrogen-doped mesoporous carbon with high Dispersed Ru nanoparticle catalyst and its preparation method and its application in catalytic electrolysis of water cathodic hydrogen evolution reaction

Method used

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  • Preparation method of nitrogen-doped mesoporous carbon loaded high-dispersion Ru nanoparticle catalyst and application thereof
  • Preparation method of nitrogen-doped mesoporous carbon loaded high-dispersion Ru nanoparticle catalyst and application thereof
  • Preparation method of nitrogen-doped mesoporous carbon loaded high-dispersion Ru nanoparticle catalyst and application thereof

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Embodiment 1

[0043] Embodiment 1, the preparation of nitrogen-doped mesoporous carbon nanomaterial (NMC)

[0044] In order to compare the performance difference between the nitrogen-doped mesoporous carbon electrolysis hydrogen evolution catalyst without Ru nanoclusters and the low-cost nitrogen-doped mesoporous carbon supported highly dispersed Ru nanoparticles catalyst, a nitrogen-doped mesoporous carbon nanomaterials.

[0045] Concrete preparation method comprises the following steps:

[0046] (a) Preparation of precursor solution: Dissolve 0.470g F127 in 5mL deionized water, stir well to obtain uniform solution A; add 0.421g 3-aminophenol to 75mL deionized water, stir well to obtain solution B; 0.654g of hexamethylenetetramine, continue to fully stir until uniformly recorded as solution C. Add solution A to mixed solution C, place in an oil bath, heat and stir at 50°C for 16 hours to obtain prepolymerized solution D;

[0047] (b) Preparation of nitrogen-doped mesoporous polymer prec...

Embodiment 2

[0050] Embodiment 2, preparation of nitrogen-doped mesoporous carbon-supported highly dispersed Ru nanoparticle catalyst (NMC-Ru):

[0051] (a) Preparation of precursor solution: Dissolve 0.470g F127 in 5mL deionized water, stir well to obtain uniform solution A; add 0.421g 3-aminophenol to 75mL deionized water, and stir uniformly to obtain solution B; Add 0.654g of hexamethylenetetramine, and continue to stir well until it is homogeneously recorded as solution C. Add solution A to mixed solution C, place in an oil bath, heat and stir at 50°C for 16 hours to obtain prepolymerized solution D;

[0052] (b) Preparation of nitrogen-doped mesoporous polymer precursor: transfer the solution D into a polytetrafluoroethylene reactor and place it in an oven, raise the temperature from room temperature to 130 °C at a rate of 1 °C / min, and carry out water After 8 hours of thermal reaction, the reaction kettle was naturally cooled to room temperature with an oven to obtain a gel-like pro...

Embodiment 3

[0058] Example 3, Preparation of nitrogen-doped mesoporous carbon-supported highly dispersed CoRu nanoparticle catalyst (NMC-CoRu)

[0059] A method for preparing a nitrogen-doped mesoporous carbon-supported highly dispersed CoRu nanoparticle catalyst, comprising the steps of:

[0060] (a) Preparation of precursor solution: Dissolve 0.470g F127 in 5mL deionized water, stir well to obtain uniform solution A; add 0.421g 3-aminophenol to 75mL deionized water, stir well to obtain solution B; 0.654g of hexamethylenetetramine, continue to fully stir until uniformly recorded as solution C. Add solution A to mixed solution C, place in an oil bath, heat and stir at 50°C for 16 hours to obtain prepolymerized solution D;

[0061] (b) Preparation of nitrogen-doped mesoporous polymer precursor: transfer the solution D into a polytetrafluoroethylene reactor and place it in an oven, raise the temperature from room temperature to 130 °C at a rate of 1 °C / min, and carry out water After 8 hou...

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Abstract

The invention belongs to the field of chemical energy materials, and particularly relates to preparation of a nitrogen-doped mesoporous carbon material hydrogen evolution electrocatalyst, in particular to a nitrogen-doped mesoporous carbon loaded high-dispersion Ru nano-particle catalyst for catalyzing a water electrolysis hydrogen evolution reaction and a preparation method of the nitrogen-doped mesoporous carbon loaded high-dispersion Ru nano-particle catalyst. The preparation method specifically comprises the following steps: self-assembling a segmented copolymer template agent with a nitrogen-containing carbon source precursor and an amine compound in oil bath and hydrothermal processes to obtain a nitrogen-doped mesoporous polymer, then providing a wet chemical impregnation method at low temperature to successfully load Ru on the polymer precursor, finally carrying out a high-temperature carbonization process, and preparing the nitrogen-doped mesoporous carbon loaded high-dispersion Ru nano-particle catalyst. The performance of the catalyst is equivalent to that of commercial Pt / C, high current density can be generated under low overpotential, the catalyst has excellent long-term stability, the production cost of the catalyst is only 8% of that of the commercial Pt / C catalyst, the economic applicability is high, and a new insight and thought are provided for research of Ru-based hydrogen evolution catalysts.

Description

technical field [0001] The invention belongs to the field of chemical energy materials, in particular to the preparation of nitrogen-doped mesoporous carbon material hydrogen evolution electrocatalysts, in particular to a nitrogen-doped mesoporous carbon-supported highly dispersed Ru nanoparticle catalyst for catalyzing hydrogen evolution reaction in electrolyzed water and its Preparation. Background technique [0002] At present, the energy crisis and environmental pollution are becoming more and more serious, and there is an urgent need to develop renewable and clean energy that can replace traditional fossil fuels. As an ideal energy carrier with high energy density, clean and pollution-free, hydrogen is regarded as the energy source with the most development potential in the 21st century. At present, there are four main methods of hydrogen production: hydrogen production from fossil fuels, hydrogen production from industrial by-products, hydrogen production from electro...

Claims

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Application Information

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IPC IPC(8): C25B1/04C25B11/091
CPCC25B1/04C25B11/091Y02E60/36
Inventor 黄明华姚涵旭江河清汪兴坤宋向菊
Owner OCEAN UNIV OF CHINA
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