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Rough octahedral-morphology PtCoFe alloy particles and preparation method thereof

A technology of alloy nanoparticles and octahedrons, which is applied in the field of PtCoFe alloy nanoparticles with rough octahedral morphology prepared by hydrothermal synthesis, can solve the problems of easy poisoning, high price, short life, etc., and achieve high active site density, Wide application prospects, excellent electrocatalytic oxidation activity effect

Inactive Publication Date: 2018-03-27
UNIV OF JINAN
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  • Application Information

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Problems solved by technology

[0005] Aiming at the above-mentioned technical problems, the present invention solves the technical problems of easy poisoning, short service life and high price of current Pt nanostructure catalysts, prepares a kind of rough octahedral PtCoFe alloy nanoparticles with high-density active sites, and improves the Pt-based nanostructure. Catalytic performance

Method used

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  • Rough octahedral-morphology PtCoFe alloy particles and preparation method thereof
  • Rough octahedral-morphology PtCoFe alloy particles and preparation method thereof
  • Rough octahedral-morphology PtCoFe alloy particles and preparation method thereof

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Embodiment 1

[0023] Measure 1.0mL chloroplatinic acid (19.3mmol / L), 4.0mL concentration is the cobalt chloride aqueous solution of 1.66mmol / L and 3.0mL concentration is the ferric chloride aqueous solution of 1.66mmol / L in the 30ml reactor, then add Glycine, sodium dodecyl sulfate SDS and NaI are stirred and dissolved with a magnetic stirrer, and then the air in the reactor is exhausted with oxygen, and 1.0MPa oxygen is introduced into the reactor, and then heated at 210°C for reaction. After the end, through ethanol centrifugal washing, freeze-drying and other processing steps, rough octahedral PtCoFe alloy nanoparticles (such as Figure 1-2 Shown), wherein, the consumption of glycine is 120mg, and the consumption scope of SDS is 220mg, and the addition of NaI is 110mg.

[0024] Methanol (formic acid) electro-oxidation test: the anode electro-oxidation performance test is carried out on a CHI650D electrochemical workstation using a conventional three-electrode system. A saturated calomel...

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Abstract

The invention relates to rough octahedral-morphology PtCoFe alloy particles and a preparation method thereof. The rough octahedral-morphology PtCoFe alloy nano particles with relatively high selectivity are obtained by adopting chloroplatinic acid, cobalt chloride and ferric trichloride as raw materials, adopting glycine as a reduction agent and morphology control agent, adopting SDS as a protective agent, and adding a specific content of NaI in an oxygen atmosphere. The preparation method is environment-friendly and clean. The obtained rough octahedral-shape PtCoFe alloy nano particles are more in step atoms, high in active site density and wide in application prospect.

Description

technical field [0001] The invention belongs to the field of functional nano alloys. Specifically, the present invention uses a hydrothermal synthesis method to prepare a PtCoFe alloy nanoparticle with a rough octahedral shape. Background technique [0002] Due to its excellent catalytic performance and thermal stability, noble metal Pt nanostructure catalysts are widely used in industrial catalysis, biomimetic, electrocatalysis and other fields. However, due to some restrictive factors in practical applications, such as easy poisoning, short life and high price, this excellent nano-catalyst cannot be further promoted and applied. In order to solve these problems, researchers often use low-cost 3d transition metal elements to partially replace Pt to form Pt-based binary / multi-element alloy catalysts, and explore its morphology, composition and catalytic performance stability through condition control. relation. [0003] Among many transition metal elements, Co and Fe are ...

Claims

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Application Information

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IPC IPC(8): H01M4/92H01M4/88B82Y30/00
CPCB82Y30/00H01M4/88H01M4/921Y02E60/50
Inventor 高道伟吕一品李书娜陈国柱
Owner UNIV OF JINAN
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