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Preparation method of porous multi-branch Pt-Ni-Cu alloy nanoparticles

An alloy nanoparticle and alloy nanoparticle technology are applied in the field of preparing a porous multi-branched Pt-Ni-Cu alloy nanoparticle by a microwave synthesis method, which can solve the problem of easy poisoning, low utilization rate, high price of Pt nanostructure catalyst, etc. problems, to achieve the effect of high active site density, wide application prospects, and green and efficient preparation methods

Active Publication Date: 2018-11-06
UNIV OF JINAN
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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems, the present invention solves the technical problems of current Pt nanostructure catalysts such as high price, low utilization rate and easy poisoning, prepares a kind of porous and multi-branched Pt-Ni-Cu alloy nanoparticles with high-density active sites, and improves the Pt Performance of Nanostructured Catalysts

Method used

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  • Preparation method of porous multi-branch Pt-Ni-Cu alloy nanoparticles
  • Preparation method of porous multi-branch Pt-Ni-Cu alloy nanoparticles
  • Preparation method of porous multi-branch Pt-Ni-Cu alloy nanoparticles

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Embodiment 1

[0023] Measure 2.0mL of 19.3mmol / L chloroplatinic acid aqueous solution, 1.0mL of 20mmol / L nickel chloride and 1.0mL of 20mmol / L copper chloride aqueous solution and 0.7mL of 1,3-propanediol in 50mL Then add glycine, polyvinylpyrrolidone K30 and NaF to the beaker, stir and dissolve with a magnetic stirrer, then transfer to a microwave reactor, after absolutely sealing, transfer to a microwave synthesizer and heat at 200°C for 30min for reaction, after the reaction is completed, Water and ethanol centrifugal washing, freeze-drying and other processing steps, wherein, the dosage range of polyvinylpyrrolidone K30 is 200mg, the dosage range of NaF is 580mg, the dosage range of glycine is 310mg, and the dosage range of 1.3-propanediol is 0.7mL to obtain porous multi-branched Pt-Ni-Cu alloy nanoparticles (such as figure 2 shown).

[0024] Methanol (formic acid) electro-oxidation test: The anode electro-oxidation performance test is carried out on a CHI650D electrochemical workstat...

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Abstract

The invention discloses a preparation method of porous multi-branch Pt-Ni-Cu alloy nanoparticles. The invention takes chloroplatinic acid, copper chloride and nickel chloride as raw materials, glycineand PVP as dual reducing agents, adopts specific addition amount of 1, 3- propylene glycol and NaF, the porous and multibranched Pt-Ni-Cu alloy nanoparticles which are highly selective are prepared through a microwave synthesis method, and the preparation method is green and efficient. The porous multibranched Pt-Ni-Cu alloy nanoparticles have many step atoms and high active site density, which show excellent electrochemical activity of methanol and formic acid, and have wide application prospects.

Description

technical field [0001] The invention belongs to the technical field of functional nanometer materials. Specifically, the present invention uses a microwave synthesis method to prepare a porous and multi-branched Pt-Ni-Cu alloy nanoparticle. Background technique [0002] Noble metal Pt nanostructure catalysts are widely used in environmental protection catalysis, biochemistry and other fields due to their excellent stability and good catalytic performance. However, due to the high cost of use and easy poisoning during use, this excellent nanocatalyst cannot be widely used on a large scale. One of the effective ways to solve these problems is to combine Pt with three-dimensional transition metals such as Ni, Cu, and Co to form Pt-based binary / multiple alloy catalysts. It has been proved that the catalytic activity of Pt-based alloy catalysts depends on the composition and composition of alloy nanoparticles. The surface topography, through the synergistic effect of electrons ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/92B82Y30/00
CPCB82Y30/00H01M4/921Y02E60/50
Inventor 吕一品杨绍寒高道伟陈国柱李春生
Owner UNIV OF JINAN
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