Phosphorus-doped platinum-nickel nanowire and preparation method and application thereof

A nanowire and phosphorus-doped technology, which is applied in nanotechnology, nanotechnology, nanotechnology for materials and surface science, etc., can solve the problems of high price of platinum-carbon catalysts and the need to improve catalytic performance

Active Publication Date: 2022-03-01
BEIHANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Platinum carbon (Pt) is a widely used industrial catalyst at present, but the price of platinum carbon catalyst is relatively high. In addition, the catalytic performance of platinum carbon catalyst in alkaline electrolyte still needs to be improved

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  • Phosphorus-doped platinum-nickel nanowire and preparation method and application thereof
  • Phosphorus-doped platinum-nickel nanowire and preparation method and application thereof
  • Phosphorus-doped platinum-nickel nanowire and preparation method and application thereof

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preparation example Construction

[0028] The invention provides a method for preparing phosphorus-doped platinum-nickel nanowires, comprising the following steps:

[0029] (1) mixing a platinum source, a nickel salt, an alkali metal hydroxide, ethylene glycol and N,N-dimethylformamide, and subjecting the resulting mixed solution to a first hydrothermal reaction to obtain platinum-nickel nanowires;

[0030] (2) Mixing the platinum-nickel nanowires, phosphorus source and ethylene glycol, and subjecting the obtained mixture to a second hydrothermal reaction to obtain phosphorus-doped platinum-nickel nanowires.

[0031] In the present invention, unless otherwise specified, the raw materials used are commercially available products well known in the art.

[0032] The invention mixes platinum source, nickel salt, alkali metal hydroxide, ethylene glycol and N,N-dimethylformamide, and performs the first hydrothermal reaction on the obtained mixed solution to obtain platinum-nickel nanowires.

[0033] In the present i...

Embodiment 1

[0048] Ammonium chloroplatinate ((NH 4 ) 2 PtCl 6 ,70mg), potassium hydroxide (KOH,500mg) and nickel chloride hexahydrate (NiCl 2 ·6H 2 O, 20 mg) was added to a mixed solution composed of ethylene glycol (EG, 9 mL) and N,N-dimethylformamide (DMF, 3 mL), and after stirring at 50°C for 3 h, the synthesized homogeneous yellow solution was transferred to polytetrafluoroethylene In a vinyl fluoride-lined stainless steel autoclave, conduct a hydrothermal reaction at 170°C for 8 hours. After cooling to room temperature, the product is collected by filtration, washed three times with a mixture of ethanol / deionized water, and dried at room temperature to obtain platinum-nickel nanowires.

[0049] Dissolve 30mg of platinum-nickel nanowires and 3mg of phosphorous powder in 13mL of ethylene glycol, and after stirring, a uniform red solution is synthesized and transferred to a polytetrafluoroethylene-lined stainless steel autoclave, subjected to hydrothermal reaction at 180°C for 8 hour...

Embodiment 2

[0051] Ammonium chloroplatinate ((NH 4 ) 2 PtCl 6 ,70mg), potassium hydroxide (KOH,500mg) and nickel chloride hexahydrate (NiCl 2 ·6H 2 O, 10mg) was added to a mixed solution composed of ethylene glycol (EG, 9mL) and N,N-dimethylformamide (DMF, 3mL), and after stirring at 50°C for 3h, the synthesized homogeneous yellow solution was transferred to polytetrafluoroethylene In a vinyl fluoride-lined stainless steel autoclave, conduct a hydrothermal reaction at 170°C for 8 hours. After cooling to room temperature, the product is collected by filtration, washed three times with a mixture of ethanol / deionized water, and dried at room temperature to obtain platinum-nickel nanowires.

[0052] Dissolve 30mg of platinum-nickel nanowires and 3mg of phosphorus powder in 13mL of ethylene glycol, stir to form a uniform red solution, transfer it to a polytetrafluoroethylene-lined stainless steel autoclave, heat at 180°C for 8 hours, cool to room temperature, and filter The product was col...

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Abstract

The invention provides a phosphorus-doped platinum-nickel nanowire as well as a preparation method and application thereof, and belongs to the technical field of alkaline electrolytic water hydrogen evolution catalysts. According to the prepared phosphorus-doped platinum-nickel nanowire, Ni atoms are beneficial to adsorption of water molecules, P atoms are beneficial to adsorption of OH <->, adsorption of the water molecules and OH <-> is beneficial to acceleration of diffusion of H atoms adsorbed on the surface of the nanowire to Pt atoms, and then the output efficiency of hydrogen on the Pt atoms is improved.

Description

technical field [0001] The invention relates to the technical field of alkaline electrohydraulic hydrogen analysis catalysts, in particular to a phosphorus-doped platinum-nickel nanowire and its preparation method and application. Background technique [0002] As a renewable clean energy, hydrogen is playing an increasingly important role. Among various hydrogen production methods, the electrochemical hydrogen evolution reaction (HER), as the cathodic reaction for water electrolysis, has attracted increasing attention due to its high product purity and high yield. In general, HER is more likely to occur in acidic solution because the H + The conversion kinetics ratio of H 2 The conversion kinetics of O is fast. However, in the industrial electrochemical hydrogen production process, the electrolyte is often alkaline for better oxygen evolution reaction (OER) performance. Platinum carbon (Pt) is a widely used industrial catalyst at present, but the price of platinum carbon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B22F9/24B22F1/054C25B1/04C25B11/091B82Y40/00B82Y30/00
CPCB22F9/24C25B1/04C25B11/091B82Y40/00B82Y30/00Y02E60/36
Inventor 宫勇吉陈乾魏怡古小康
Owner BEIHANG UNIV
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