Method for preparing dendritic Pt-Ni-Cu alloy nano-particles

A technology of alloy nanoparticles and alloy nanoparticles, which is applied in nanotechnology, nanotechnology, metal processing equipment and other directions, can solve the problems of easy poisoning, short life and high price of Pt nanostructured catalysts, and achieve excellent electrochemical activity and activity. The effect of high bit density and wide application prospects

Inactive Publication Date: 2018-11-13
UNIV OF JINAN
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  • Abstract
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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems, the present invention solves the technical problems such as easy poisoning, short service life and high price of current Pt nanostructure catalysts, and prepares a kind of dendritic Pt-Ni-Cu alloy nanoparticles with high-density active sites to improve the Pt nanostructure. Catalyst performance

Method used

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  • Method for preparing dendritic Pt-Ni-Cu alloy nano-particles
  • Method for preparing dendritic Pt-Ni-Cu alloy nano-particles
  • Method for preparing dendritic Pt-Ni-Cu alloy nano-particles

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Experimental program
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Embodiment 1

[0023] Measure 2.0mL of chloroplatinic acid aqueous solution with a concentration of 20mmol / L, 1.0mL of copper chloride aqueous solution with a concentration of 20mmol / L and 1.0mL of nickel chloride aqueous solution with a concentration of 20mmol / L in a beaker, then add glycine, polyethylene Pyrrolidone K30 and NaBr, then add methanol, stir with a magnetic stirrer for 12 hours to make it fully coordinated, then transfer it to a reaction kettle, place it in an oven and heat it for reaction, after the reaction is completed, it will undergo centrifugal washing with water and ethanol, and freeze drying step, to obtain dendritic Pt-Ni-Cu alloy nanoparticles (such as figure 2 shown), wherein the dosage range of glycine is 303mg, the dosage range of polyvinylpyrrolidone K30 is 200mg, the dosage range of NaBr is 600mg, and the dosage range of methanol is 0.7mL.

[0024] Methanol (formic acid) electro-oxidation test: The anode electro-oxidation performance test is carried out on a CHI...

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Abstract

The invention discloses a method for preparing dendritic Pt-Ni-Cu alloy nano-particles. Chloroplatinic acid, copper chloride and nickel chloride are taken as raw materials, glycine and methyl are taken as double reducing agents, polyvinylpyrrolidone is taken as a protective agent and stabilizer, dendritic Pt-Ni-Cu alloy nano-particles with higher selectivity are prepared, and the preparation method is green and clean. The step atoms of the obtained dendritic Pt-Ni-Cu alloy nano-particles are many, the active site density is high, excellent methyl and formic acid electrochemical activities areshown, and the dendritic Pt-Ni-Cu alloy nano-particles have a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer materials. Specifically, the present invention uses a hydrothermal synthesis method to prepare a dendritic Pt-Ni-Cu alloy nano particle. Background technique [0002] Noble metal Pt nanostructure catalysts are widely used in fine chemical industry, electrocatalysis and other fields due to their high stability and catalytic activity. However, due to the high price of Pt, its easy to be poisoned by reaction intermediates such as CO, and the slow kinetics of Pt catalysts for oxygen reduction reaction, it has seriously hindered the practical large-scale application of Pt. Therefore, the focus of researchers' research is to improve the utilization rate of the catalyst, reduce the deactivation rate and improve the ability to resist CO poisoning. At present, the effective method often used is to partially replace Pt with cheap 3d transition metal elements to form Pt-based binary / Multi-com...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/89B22F1/00B22F9/24B82Y30/00H01M4/92
CPCH01M4/921H01M4/928B82Y30/00B01J23/8926B22F9/24B22F1/0553B22F1/07B22F1/054Y02E60/50
Inventor 杨绍寒吕一品高道伟陈国柱李春生
Owner UNIV OF JINAN
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