Nitrogen-doped carbon-coated Ru nano-catalyst and application thereof in electrochemical deuterium evolution reaction

A nano-catalyst, nitrogen-doped carbon technology, applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc. The effect of improving reaction performance and large current

Active Publication Date: 2021-01-29
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is difficult to remove protium, and the treatment process is very complicated

Method used

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  • Nitrogen-doped carbon-coated Ru nano-catalyst and application thereof in electrochemical deuterium evolution reaction
  • Nitrogen-doped carbon-coated Ru nano-catalyst and application thereof in electrochemical deuterium evolution reaction
  • Nitrogen-doped carbon-coated Ru nano-catalyst and application thereof in electrochemical deuterium evolution reaction

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Example 1 The preparation method of a nitrogen-doped carbon-coated Ru nanocatalyst (loading capacity 2.5%) is as follows:

[0027] Accurately weigh 40 mg of ammonium sulfate, 40 mg of glucose and 1.6 g of dicyandiamide in a mortar, mix them uniformly first, then add 4.5 mg of ruthenium trichloride into it, grind for 30 min with a grinding rod to obtain a uniformly mixed mixture, pour the mixture into the crucible, and then the crucible was placed in a tube furnace, under N 2 Atmosphere with 3 o C / min heating rate from room temperature to 800 o C, then calcine at constant temperature for 1 h and then cool down to room temperature naturally. The nitrogen-doped carbon-coated Ru nanocatalyst can be prepared by taking out the calcined product and grinding it evenly. Carry out TEM characterization of the nitrogen-doped carbon-coated Ru nanocatalyst prepared in this example, the characterization results are as follows figure 2 shown, from figure 2 It can be seen that th...

Embodiment 2

[0028] Example 2 The preparation method of a nitrogen-doped carbon-coated Ru nanocatalyst (loading capacity 5%) is as follows:

[0029] Accurately weigh 40 mg of ammonium sulfate, 40 mg of glucose and 1.6 g of dicyandiamide in a mortar, mix them uniformly first, then add 9.0 mg of ruthenium trichloride into it, and grind with a grinding rod for 30 minutes to obtain a uniformly mixed mixture, pour the mixture into the crucible, and then the crucible was placed in a tube furnace, under N 2 Atmosphere with 3 o C / min heating rate from room temperature to 800 o C, then calcine at constant temperature for 1 h and then cool down to room temperature naturally. The nitrogen-doped carbon-coated Ru nanocatalyst can be prepared by taking out the calcined product and grinding it evenly.

Embodiment 3

[0030] Example 3 The preparation method of a nitrogen-doped carbon-coated Ru nanocatalyst (loading capacity 7.5%) is as follows:

[0031]Accurately weigh 40 mg of ammonium sulfate, 40 mg of glucose and 1.6 g of dicyandiamide in a mortar, mix them uniformly first, then weigh 13.5 mg of ruthenium trichloride and add them, grind for 30 min with a grinding rod to obtain a uniformly mixed mixture, pour the mixture into the crucible, and then the crucible was placed in a tube furnace, under N 2 Atmosphere with 3 o C / min heating rate from room temperature to 800 o C, then calcine at constant temperature for 1 h and then cool down to room temperature naturally. The nitrogen-doped carbon-coated Ru nanocatalyst can be prepared by taking out the calcined product and grinding it evenly.

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PUM

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Abstract

The invention discloses a nitrogen-doped carbon-coated Ru nano-catalyst and application thereof in electrochemical deuterium evolution reaction, the catalyst is of a core-shell structure, a catalyst shell layer is a nitrogen-doped porous carbon material, and a catalyst core layer is ruthenium nanoparticles; and the preparation method of the catalyst comprises the following steps: grinding and uniformly mixing organic nitride, organic carbide, A pore-foaming agent and ruthenium salt in a mortar, calcining at high temperature in a nitrogen atmosphere, taking out the calcined product, and uniformly grinding to obtain the final catalyst. According to the nitrogen-doped carbon-coated Ru nano-catalyst, a carbon-coated structure is formed by doping nitrogen and ruthenium, the nitrogen-doped porous carbon structure can form good coordination with Ru metal, the charge structure between the nitrogen-doped porous carbon structure and the Ru metal is changed, and the active sites are increased, sothat the deuterium production reaction performance of the catalyst pair is improved. The preparation process of the catalyst is completed in one step, deuterium gas can be rapidly generated, and thecatalyst has good stability and wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of material preparation, and in particular relates to a nitrogen-doped carbon-coated Ru nanometer catalyst and its application in electrochemical deuterium evolution reaction. Background technique [0002] Electrocatalytic hydrogen production (HER) is a one-stage reaction of electrolysis of water. In recent years, it has been explored by a large number of researchers and achieved good results. A fast and efficient catalyst for electrocatalytic hydrogen production has been prepared. However, electrocatalytic deuterium production (DER) is still a very challenging field. Deuterium is an isotope of hydrogen with twice the atomic mass and a triple point of -254.4 o C; Specific heat capacity: 5.987 m 3 / kg (101.325kPa, 21.2 o C); gas-liquid volume ratio: 974 L / L (15 o C, 100kPa); the critical temperature is -234.8 o C; heat of vaporization ΔH v is 305 kJ / kg (-249.5 o C). Deuterium has the same chemical pro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/01C25B11/054C25B11/065C25B11/081B22F1/02B82Y30/00B82Y40/00
CPCC25B1/00B82Y30/00B82Y40/00B22F1/16
Inventor 王建国包志康张世杰丁磊
Owner ZHEJIANG UNIV OF TECH
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