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Iron/nitrogen binary doped nano-carbon catalyst loaded with ruthenium nano-particles and preparation method thereof

A technology of nanoparticle and binary doping, applied in the direction of nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of battery cost increase, achieve improved hydrogen evolution performance, simple preparation process steps, Uniform size effect

Inactive Publication Date: 2019-12-27
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Platinum-based catalysts are currently used in a variety of chemical reactions and fuel cell industries, but there are still many unsolved problems in platinum-based catalysts. For example, in polymer electrolyte fuel cells (PEFC) or air batteries, the use of platinum leads to battery The cost of the battery increases accordingly, and the battery causes chemical reactions due to the use of platinum, such as the decomposition of the electrolyte solution
Therefore, platinum-based catalysts pose a major obstacle to technological breakthroughs in the development of next-generation batteries

Method used

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  • Iron/nitrogen binary doped nano-carbon catalyst loaded with ruthenium nano-particles and preparation method thereof
  • Iron/nitrogen binary doped nano-carbon catalyst loaded with ruthenium nano-particles and preparation method thereof
  • Iron/nitrogen binary doped nano-carbon catalyst loaded with ruthenium nano-particles and preparation method thereof

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preparation example Construction

[0028] Such as figure 1 Shown is a flow chart of the steps of the preparation method of the iron / nitrogen binary doped carbon catalyst loaded with ruthenium nanoparticles according to an embodiment of the present invention. The preparation method of this embodiment includes the following steps:

[0029] Step 110: Dissolve glucose, dicyandiamide and ferric chloride in deionized water, then add silicon dioxide aqueous solution, and stir magnetically to form a mixed solution, but for those skilled in the art, any suitable solution can be used The stirring method is not limited to the magnetic stirring method disclosed in this embodiment. In addition, this embodiment discloses that the mass ratio of glucose and silicon dioxide is (0.5 gram (g)-2 gram (g)): (1 gram (g)-6 gram (g)), or glucose, dicyandiamide The mass ratio to ferric chloride is (0.5 gram (g)-2 gram (g)): (0 gram (g)-2 gram (g)): (0 gram (g)-0.3 gram (g));

[0030] Step 120: Add ruthenium chloride to the above mixe...

Embodiment 1

[0038] Dissolve 1 gram (g) of glucose, 1 gram (g) of dicyandiamide and 0.15 gram (g) of ferric chloride in 25 milliliters (ml) of deionized water, then add 4 grams (g) of dicyandiamide The silicon aqueous solution was stirred by magnetic force to form a uniform mixed solution, and then the temperature of the mixed solution was raised to 110° C. to evaporate the solvent in the solution. Subsequently, the evaporated product of the above solvent was placed in an argon (Ar) protected tube furnace for heat treatment at 800° C. for 2 hours. Next, the heat-treated product was baked and soaked in a sodium hydroxide (NaOH) solution with a working temperature of 90°C and a molar concentration of 2M for 8 hours, and then the product was washed and centrifuged with deionized water and ethanol. Then the product after centrifugation is heated in sulfuric acid (H 2 SO 4 ) and stirred for 2 hours, then the resulting product was washed and centrifuged with deionized water and ethanol. The a...

Embodiment 2

[0040] Dissolve 1 gram (g) of glucose and 1 gram (g) of dicyandiamide in 25 milliliters (ml) of deionized water, then add 4 grams (g) of silicon dioxide aqueous solution, and stir magnetically to form a uniform mixture. Next, 10 milliliters (ml) of ruthenium chloride aqueous solution (concentration: 0.01 g / ml) was added to the above mixed solution, stirred for 30 minutes and then heated to 110° C. to evaporate the solvent in the solution. Subsequently, the evaporated product of the above solvent was placed in an argon (Ar) protected tube furnace for heat treatment at 800° C. for 2 hours. Next, the heat-treated product was baked and soaked in a sodium hydroxide (NaOH) solution with a working temperature of 90°C and a molar concentration of 2M for 8 hours, and then the product was washed and centrifuged with deionized water and ethanol. Then the product after centrifugation is heated in sulfuric acid (H 2 SO 4 ) and stirred for 2 hours, then the resulting product was washed a...

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Abstract

The invention relates to an iron / nitrogen binary doped nano-carbon catalyst loaded with ruthenium nano-particles and a preparation method thereof. The preparation method comprises steps of firstly, dissolving glucose, dicyandiamide and ferric chloride in the deionized water, then adding silicon dioxide aqueous solution, stirring to form mixed solution, then adding ruthenium chloride into the mixedsolution, and stirring and heating the mixed solution added with ruthenium chloride, performing heat treatment of mixture obtained by evaporating the solvent in the inert gas, performing co-doping offerric chloride and dicyandiamide in the glucose carbonization process, heating and reducing ruthenium chloride into ruthenium nanoparticles to obtain a heat-treated product, sequentially drying andsoaking the heat-treated product in sodium hydroxide solution and stirring the heat-treated product in sulfuric acid, respectively performing cleaning and centrifuging procedures, drying the centrifuged product in a drying oven, grinding the dried product to obtain the ruthenium nanoparticle-loaded iron / nitrogen binary doped nano-carbon catalyst.

Description

【Technical field】 [0001] The invention relates to the field of preparation of carbon nanomaterials, in particular to an iron / nitrogen binary doped carbon nanomaterial loaded with ruthenium nanoparticles and a preparation method thereof. 【Background technique】 [0002] Carbon materials have a wide range of sources, low cost, and good stability. They have delocalized π electrons that can move freely. These delocalized π electrons are conducive to the electrochemical reaction. Although the electronic structure of carbon materials is stable, carbon materials usually do not have Electrocatalytic ability. [0003] Platinum-based catalysts are currently used in a variety of chemical reactions and fuel cell industries, but there are still many unsolved problems in platinum-based catalysts. For example, in polymer electrolyte fuel cells (PEFC) or air batteries, the use of platinum leads to battery The cost of the battery accordingly increases, and the battery causes chemical reactio...

Claims

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Application Information

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IPC IPC(8): H01M4/90H01M4/88B82Y30/00
CPCB82Y30/00H01M4/88H01M4/9041H01M4/9083Y02E60/50
Inventor 王家成胡春刘茜
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI